CN107537315A - A kind of photocatalysis simulative grass and its preparation method and application - Google Patents
A kind of photocatalysis simulative grass and its preparation method and application Download PDFInfo
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- CN107537315A CN107537315A CN201710728048.8A CN201710728048A CN107537315A CN 107537315 A CN107537315 A CN 107537315A CN 201710728048 A CN201710728048 A CN 201710728048A CN 107537315 A CN107537315 A CN 107537315A
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Abstract
The invention provides a kind of photocatalysis simulative grass, belong to photocatalysis field.Photocatalysis simulative grass provided by the invention is prepared by light catalyzed coating coated in simulative grass surface.The present invention in light catalyzed coating by adding colloidal sol, colloidal sol and photochemical catalyst is set to be dehydrated to form new chemical bond, after coating is sprayed at into simulative grass surface, colloidal sol and photochemical catalyst can form self assembled three-dimensional stacked structure on simulative grass surface, the contact area of organic pollution and photochemical catalyst can be improved, so as to improve the utilization ratio of photochemical catalyst；And the addition of colloidal sol to form separation layer between catalyst and simulative grass, the phenomenon of catalytic erosion simulative grass is avoided, moreover it is possible to strengthen the active force between catalyst and simulative grass, make catalyst granules difficult for drop-off.
Description
Technical field
The present invention relates to light-catalysed technical field, more particularly to a kind of photocatalysis simulative grass and preparation method thereof and should
With.
Background technology
In recent years, man and nature contradiction was becoming increasingly acute, and wherein water resource is as in people's vital movement and daily life
An essential part, the serious pollution that a large amount of emerging, artificial pollutants cause water resource, especially natural river but be present
Stream, wherein with larger toxicity and higher concentration.In addition, landscape water in the public place such as market, can only due to being stagnant water
By circularly purifying, but this method does not meet green theory.
Photocatalysis is a kind of green, environmentally friendly method for removing removal organic polluter, available in air and water
The degraded of organic pollution, there is good chemical stability, heat endurance, and catalytic process is non-toxic, it is environmentally friendly, into
This is low, so having been used for water environment treatment and air purification field in recent years.
Emulation plant has beautification function, especially simulative grass due to its manageability again, and species is various, and fidelity is high,
It is often used as in landscape water or the natural river of the public places such as market.Emulation plant with catalysis has been developed that, but
It is not to be used widely, it is mostly high polymer material to be primarily due to simulative grass, and the photochemical catalyst of surface attachment has in oxidation
Also simulative grass can be aoxidized while organic pollutants in itself, cause matrix material to be damaged, more easy to change, deformation, and photochemical catalyst
Particle easily comes off, and causes photocatalysis effect bad, and the catalyst to come off can cause water environment to pollute again.
The content of the invention
In view of this, present invention aims at provide a kind of photocatalysis simulative grass and its preparation method and application.The present invention
The photocatalysis simulative grass photocatalysis effect of offer is good, catalyst granules is difficult for drop-off, and simulative grass is in itself in photocatalytic process
It is not damaged.
In order to realize foregoing invention purpose, the present invention provides following technical scheme：
The invention provides a kind of photocatalysis simulative grass, is prepared by light catalyzed coating coated in simulative grass surface；Institute
Stating light catalyzed coating includes photochemical catalyst, colloidal sol and solvent or photocatalyst dispersion liquid and sol solution including packing；
The photochemical catalyst is titanium dioxide, titanium dioxide-graphene complex, titanium dioxide-class graphite phase carbon nitride
Compound, titanium dioxide-class graphite phase carbon nitride-metal phthalocyanine compound, titanium dioxide-tungstic acid compound, class stone
Black phase carbon nitride-tungstic acid compound, class graphite phase carbon nitride-metal phthalocyanine compound, metal phthalocyanine-tungstic acid are compound
Compound, the titanium dioxide-metal phthalocyanine-tungstic acid compound of thing, titanium dioxide-class graphite phase carbon nitride-tungstic acid
In one or more of mixtures；
The colloidal sol is Ludox and/or Alumina gel.
Preferably, the pH value of the colloidal sol is 3~11；
The concentration of the colloidal sol is 2~50wt%；
The particle diameter of the colloidal sol is 1~100nm.
Preferably, graphene is also included in the colloidal sol；The mass content of graphene is photochemical catalyst matter in the colloidal sol
The 0.1~2% of amount.
Preferably, when the light catalyzed coating includes photochemical catalyst, colloidal sol and solvent；Photocatalysis in the light catalyzed coating
The quality of agent and the volume ratio of solvent are 1~30g：1L；The quality of colloidal sol and the volume ratio of solvent are in the light catalyzed coating
0.1~15g：1L；
When the light catalyzed coating includes the photocatalyst dispersion liquid and sol solution of packing；The photocatalyst dispersion liquid
The quality of middle photochemical catalyst and the volume ratio of solvent are 1~30g：1L；The body of the quality of colloidal sol and solvent in the sol solution
Product ratio is 0.1~15g：1L.
Preferably, dry film load capacity of the photochemical catalyst on simulative grass surface is 0.1~12g/m2。
Preferably, the material of the simulative grass is polyethylene, polyester, polypropylene, polyvinyl chloride, polyamide, ethyl vinyl acetate
One or more of mixtures in ethylene copolymer, polyacrylonitrile, polyurethanes and cellulose.
The invention provides the preparation method of photocatalysis simulative grass described in such scheme, comprise the following steps：
(1) when the light catalyzed coating includes photochemical catalyst, colloidal sol and solvent, light catalyzed coating is sprayed at simulative grass
Surface, obtain the simulative grass coated with light catalyzed coating wet film；
Or, when the photochemical catalyst includes photocatalysis dispersion liquid and sol solution, by the photocatalysis dispersion liquid and molten
Sol solution is sprayed at simulative grass surface respectively, obtains the simulative grass coated with light catalyzed coating wet film；
(2) simulative grass coated with light catalyzed coating wet film is dried, obtains photocatalysis simulative grass.
Preferably, the flow of the spraying stands alone as 50~300ml/min；Shower nozzle and simulative grass surface during the spraying
Distance stands alone as 5~25cm.
The invention provides light prepared by preparation method described in the photocatalysis simulative grass described in such scheme or such scheme
It is catalyzed application of the simulative grass in photocatalysis.
The invention provides a kind of photocatalysis simulative grass, is prepared by light catalyzed coating coated in simulative grass surface；Institute
Stating light catalyzed coating includes photochemical catalyst, colloidal sol and solvent or photocatalyst dispersion liquid and sol solution including packing.This hair
The photocatalysis simulative grass of bright offer is prepared by light catalyzed coating coated in simulative grass surface, and light catalyzed coating includes catalysis
There is hydroxyl (- OH) in agent and colloidal sol, two kinds of material surfaces, the two sloughs a hydrone (H in contact process2O), formed
New chemical bond, after coating is sprayed at into simulative grass surface, colloidal sol and photochemical catalyst can form self assembly on simulative grass surface
Three-dimensional stacking structure, the contact area of organic pollution and photochemical catalyst in water or air can be improved, so as to improve photocatalysis
The utilization ratio of agent；And the addition of colloidal sol to form separation layer between photochemical catalyst and simulative grass, avoids photochemical catalyst
Corrode the phenomenon of simulative grass, moreover it is possible to strengthen the active force between photochemical catalyst and simulative grass, make photocatalyst granular difficult for drop-off.
Embodiment result shows that photocatalysis simulative grass provided by the invention can reach 99% to the clearance of methylene blue, and to light
Cyclic test is carried out after catalysis simulative grass washing, photocatalytic activity illustrates light catalyzed coating provided by the invention without significant change
It is strong with the adhesion of base material, it is difficult for drop-off, and in photocatalytic process corrosion will not be produced to simulative grass material itself.
Brief description of the drawings
Fig. 1 Fig. 1 is the photocatalytic degradation result of the test of the embodiment of the present invention 1；
Fig. 2 is polyester fiber felt surface observation result in the embodiment of the present invention 7.
Embodiment
The invention provides a kind of photocatalysis simulative grass, is prepared by light catalyzed coating coated in simulative grass surface；Institute
Stating light catalyzed coating includes photochemical catalyst, colloidal sol and solvent or photocatalyst dispersion liquid and sol solution including packing；
The photochemical catalyst is titanium dioxide, titanium dioxide-graphene complex, titanium dioxide-class graphite phase carbon nitride
Compound, titanium dioxide-class graphite phase carbon nitride-metal phthalocyanine compound, titanium dioxide-tungstic acid compound, class stone
Black phase carbon nitride-tungstic acid compound, class graphite phase carbon nitride-metal phthalocyanine compound, metal phthalocyanine-tungstic acid are compound
The compound of thing, class graphite phase carbon nitride-metal phthalocyanine compound, titanium dioxide-class graphite phase carbon nitride-tungstic acid, two
One or more of mixtures in titanium oxide-metal phthalocyanine-tungstic acid compound.
In the present invention, when the photochemical catalyst includes titanium dioxide；The titanium dioxide is preferably anatase crystal two
Titanium oxide or mixed crystal type titanium dioxide；The particle diameter of the titanium dioxide is preferably 5~800nm, more preferably 15~600nm,
Most preferably 50~500nm；The present invention does not have particular/special requirement to the source of the titanium dioxide, ripe using those skilled in the art
Know the titanium dioxide in source, such as commercially available titanium dioxide.
In the present invention, when the photochemical catalyst includes titanium dioxide-graphene complex, the titanium dioxide-graphite
The mass ratio of titanium dioxide and graphene is preferably 100 in alkene compound：0.1~2, more preferably 100：0.2~1；The present invention
There is no particular/special requirement to the source of the titanium dioxide-graphene complex, using commodity commercially or use this
It is prepared by method known to art personnel.In a particular embodiment of the present invention, the titanium dioxide-graphene
Compound is preferably formed by directly mixing by titanium dioxide and graphene；The present invention does not have special want to the species of the graphene
Ask, preferably the mixture of single-layer graphene, multi-layer graphene or single-layer graphene and multi-layer graphene；The Multi-layer graphite
The thickness of alkene is preferably 0.3~50nm, more preferably 5~40nm.
In the present invention, when the photochemical catalyst includes titanium dioxide-class graphite phase carbon nitride compound；The titanium dioxide
Titanium dioxide and the mass ratio of class graphite phase carbon nitride are preferably 100 in titanium-class graphite phase carbon nitride compound：2~100, more
Preferably 100：5~25；The present invention does not have particular/special requirement to the source of titanium dioxide-class graphite phase carbon nitride compound, uses
Commercially available titanium dioxide-class graphite phase carbon nitride compound commodity are prepared using method well known to those skilled in the art
；In a particular embodiment of the present invention, titanium dioxide and class graphite phase carbon nitride are directly preferably mixed to get titanium dioxide
Titanium-class graphite phase carbon nitride compound.
The present invention is to the class graphite phase carbon nitride (g-C3N4) species there is no particular/special requirement, preferably individual layer class graphite
Phase carbon nitride and/or multilayer class graphite phase carbon nitride；The thickness of the class graphite phase carbon nitride is preferably 0.3~50nm, more excellent
Elect 2~40nm as；The present invention is not particularly limited to the source of the class graphite phase carbon nitride, uses commercially available class graphite-phase nitrogen
Change carbon commodity or prepared using method well known to those skilled in the art.
In a particular embodiment of the present invention, the class graphite phase carbon nitride (g-C3N4) preparation method preferably include with
Lower step：Urea is heat-treated, obtains class graphite phase carbon nitride.In the present invention, the temperature of the heat treatment is excellent
Elect 300~650 DEG C, more preferably 350~600 DEG C, most preferably 500~550 DEG C as；The time of the heat treatment is preferably 3
~8h, more preferably 4~7h, most preferably 5~6h.The present invention preferably is selected from room temperature to heat treatment temperature, described to be warming up to
The heating rate of the heat treatment temperature is preferably 1~6 DEG C/min, more preferably 2~4 DEG C/min.The present invention is preferably in air
It is heat-treated under atmosphere, normal pressure；The present invention to heat treatment used by equipment there is no special restriction, using art technology
It is used for the equipment being heat-treated known to personnel, it is specific such as tube furnace or batch-type furnace.
In the present invention, when the photochemical catalyst includes titanium dioxide-class graphite phase carbon nitride-metal phthalocyanine compound；
Titanium dioxide, class graphite phase carbon nitride and metal phthalocyanine in the titanium dioxide-class graphite phase carbon nitride-metal phthalocyanine compound
Mass ratio be preferably 45~74：25~50：0.5~6, more preferably 55~65:30~40:1~4；The present invention is to described two
The source of titanium oxide-class graphite phase carbon nitride-metal phthalocyanine compound does not have particular/special requirement, uses commercially available titanium dioxide-class
Graphite phase carbon nitride-metal phthalocyanine compound is prepared using method well known to those skilled in the art.In this hair
In bright specific embodiment, prepared by the method preferably in the patent of Application No. 201610699773.2.
In the present invention, the raw material class for being used to prepare titanium dioxide-class graphite phase carbon nitride-metal phthalocyanine compound
The species and source of graphite phase carbon nitride and titanium dioxide are consistent with such scheme, will not be repeated here.
In the present invention, the raw material gold for being used to prepare titanium dioxide-class graphite phase carbon nitride-metal phthalocyanine compound
Category phthalocyanine has structure shown in Formulas I：
In Formulas I, M is transition metal ions, and the present invention is not particularly limited for the species of the transition metal ions, is adopted
With it is well known to those skilled in the art can with phthalocyanine formed complex transition metal ions, the present invention specific reality
Apply in example, the transition metal ions preferably includes zinc ion, iron ion, copper ion or cobalt ions；The R is-H ,-NH2、-
Cl、-F、-COOH、-NHCOCH3、-NHSO3H or-SO3H, R substitution site can be any in 4 substitution sites on phenyl ring
One.
The present invention does not have particular/special requirement to the source of the metal phthalocyanine, using metal phthalocyanine commercial goods or uses ability
It is prepared by method known to field technique personnel；In a particular embodiment of the present invention, preferably using phthalic nitrile method or
Phthalic anhydride urea method carries out the preparation of metal phthalocyanine, particular reference (organic dirt such as Lv Wangyang catalysis fiber degradation dyestuffs
Contaminate thing research Institutes Of Technology Of Zhejiang, 2010) in method prepare.
In the present invention, in the compound photochemical catalyst including metal phthalocyanine, metal phthalocyanine can be supported on other
Composition surface (titanium dioxide, class graphite phase carbon nitride etc.), the compositions such as titanium dioxide, class graphite phase carbon nitride are sensitized, are widened
The visible ray respective range of photochemical catalyst, improve the efficiency of light energy utilization.
In the present invention, when the photochemical catalyst includes titanium dioxide-tungstic acid compound；The titanium dioxide-three
The mass ratio of titanium dioxide and tungstic acid is preferably 100 in tungsten oxide compound：2~1000, more preferably 100：5~300
The present invention does not have particular/special requirement to the source of titanium dioxide-tungstic acid compound, uses commercially available titanium dioxide-tungstic acid
Compound commodity are prepared using method well known to those skilled in the art.In a particular embodiment of the present invention,
It is preferred that titanium dioxide, tungstic acid are directly mixed to get titanium dioxide-tungstic acid compound；The species of the titanium dioxide
And source is consistent with such scheme, will not be repeated here；The particle diameter of the tungstic acid is preferably 5~500nm, and more preferably 10
~400nm, most preferably 50~300nm.
In the present invention, when the photochemical catalyst includes class graphite phase carbon nitride-tungstic acid compound；The class graphite
The mass ratio of class graphite phase carbon nitride and tungstic acid is preferably 100 in phase carbon nitride-tungstic acid compound：10~1000,
More preferably 100：20~500；The present invention does not have particular/special requirement to the source of class graphite phase carbon nitride-tungstic acid compound,
Carried out using commercially available class graphite phase carbon nitride-tungstic acid compound commodity or using method well known to those skilled in the art
Prepare；In a particular embodiment of the present invention, class graphite phase carbon nitride and tungstic acid are directly preferably mixed to get class
Graphite phase carbon nitride-tungstic acid compound；The class graphite phase carbon nitride and the species of tungstic acid and source and above-mentioned side
Case is consistent, will not be repeated here；
In the present invention, when the catalyst includes class graphite phase carbon nitride-metal phthalocyanine compound, the class graphite-phase
The mass ratio of class graphite phase carbon nitride and metal phthalocyanine is preferably 100 in carbonitride-metal phthalocyanine compound：0.05~10, more
Preferably 100：0.1~5；The present invention does not have particular/special requirement to the source of class graphite phase carbon nitride-metal phthalocyanine compound, uses
Commercially available class graphite phase carbon nitride-metal phthalocyanine commodity are prepared using method well known to those skilled in the art；
In a particular embodiment of the present invention, preferably according to bibliography (Lu Wangyang, Xu Tiefeng, Wang Yu, et
al.Synergistic photocatalytic properties and mechanism of g-C3N4 coupled with
zinc phthalocyanine catalystundervisible light irradiation.Catal.B-
Environ.180 (2016) 20-28) disclosed in method prepare.
In the present invention, when the photochemical catalyst includes metal phthalocyanine-tungstic acid compound；The metal phthalocyanine-three
The mass ratio of metal phthalocyanine and tungstic acid is preferably 0.05~10 in tungsten oxide compound：100, more preferably 0.1~5：
100；The present invention does not have particular/special requirement to the source of metal phthalocyanine-tungstic acid compound, uses the commercially available oxygen of metal phthalocyanine-three
Change tungsten compound commodity or prepared using method well known to those skilled in the art；It is described to be used to prepare metal phthalein
The feed metal phthalocyanine and the species of tungstic acid of cyanines-tungstic acid compound and source are consistent with such scheme, herein not
Repeat again.
In the present invention, when the photochemical catalyst includes titanium dioxide-class graphite phase carbon nitride-tungstic acid compound；
Titanium dioxide, class graphite phase carbon nitride and tungstic acid in the titanium dioxide-class graphite phase carbon nitride-tungstic acid compound
Mass ratio be preferably 15~90：2~50：5~80, more preferably 30~90：5~40：10~70；The present invention is to the dioxy
The source for changing titanium-class graphite phase carbon nitride-tungstic acid compound does not have particular/special requirement, uses commercially available titanium dioxide-class stone
Black phase carbon nitride-tungstic acid compound commodity are prepared using method well known to those skilled in the art；At this
In the specific embodiment of invention, titanium dioxide, class graphite phase carbon nitride and tungstic acid are directly preferably mixed with titanium dioxide
Titanium-class graphite phase carbon nitride-tungstic acid compound；It is described to be used to prepare titanium dioxide-class graphite phase carbon nitride-tungstic acid
The raw material titanium dioxide of compound, class graphite phase carbon nitride, the species of tungstic acid and source are consistent with such scheme, herein not
Repeat again.
In the present invention, when the photochemical catalyst includes titanium dioxide-metal phthalocyanine-tungstic acid compound；Described two
In titanium oxide-metal phthalocyanine-tungstic acid compound the mass ratio of titanium dioxide, metal phthalocyanine and tungstic acid be preferably 10~
90：0.1~10：5~90, more preferably 25~90：0.2~5：10~80；The present invention to the titanium dioxide-metal phthalocyanine-
The source of tungstic acid compound does not have particular/special requirement, uses commercially available titanium dioxide-metal phthalocyanine-tungstic acid compound business
Product are prepared using method well known to those skilled in the art；In a particular embodiment of the present invention, the dioxy
Change the preparation method and above-mentioned titanium dioxide-class graphite phase carbon nitride-metal phthalocyanine of titanium-metal phthalocyanine-tungstic acid compound
The preparation method of compound is similar, and class graphite phase carbon nitride therein is replaced with into tungstic acid；It is described to be used to prepare two
Raw material titanium dioxide, metal phthalocyanine, the species of tungstic acid and the source of titanium oxide-metal phthalocyanine-tungstic acid compound with
Such scheme is consistent, will not be repeated here.
In the present invention, the photochemical catalyst is two or more mixture in above-mentioned several photochemical catalysts；When
When the photochemical catalyst is mixture, the present invention does not have to the photochemical catalyst species in the photocatalyst mixture and mass ratio
Particular/special requirement, mixed using the photochemical catalyst of any kind with any mass ratio.
In the present invention, the colloidal sol is Ludox and/or Alumina gel；The pH value of the colloidal sol is preferably 3~11, more excellent
Elect 6~10, most preferably 7~9 as；The concentration of the colloidal sol is preferably 2~50wt%, more preferably 10~30wt%, optimal
Elect 15~25wt% as；The particle diameter of the colloidal sol is preferably 1~100nm, more preferably 5~50nm, most preferably 8~20nm.
In the present invention, when the colloidal sol is the mixture of Ludox and Alumina gel, the present invention is to Ludox in mixture and Alumina gel
Mass ratio there is no particular/special requirement, mixed using arbitrary mass ratio.The present invention does not have to the source of the colloidal sol
Particular/special requirement, use the colloidal sol in source known to those skilled in the art, such as commercially available colloidal sol.
In the present invention, graphene is preferably also contained in the colloidal sol；The mass content of graphene is preferred in the colloidal sol
For the 0.1~2% of photochemical catalyst quality, more preferably 0.5~1.5%；In a particular embodiment of the present invention, preferably by graphite
Alkene is directly mixed with colloidal sol, graphene is uniformly dispersed in colloidal sol；It is graphene-doped in colloidal sol to be advantageous to electricity
The transmission of son, the catalytic activity of photochemical catalyst can be improved.
Colloidal sol is included in light catalyzed coating provided by the invention, the colloidal sol and photochemical catalyst are dehydrated to form new chemistry
Key, after coating is sprayed at into simulative grass surface, colloidal sol and photochemical catalyst can form self assembled three-dimensional on simulative grass surface and stack
Structure, the contact area of organic pollution and photochemical catalyst can be improved, so as to improve the utilization ratio of photochemical catalyst；It is and molten
The addition of glue to form separation layer between catalyst and simulative grass, avoids the phenomenon of catalytic erosion simulative grass, moreover it is possible to increase
Active force between powerful catalyst and simulative grass, effectively alleviate the problem that comes off of catalyst.
In the present invention, the solvent is preferably the mixture of water or water and ethanol；When the solvent includes water and ethanol
When, the mixture reclaimed water of the water and ethanol and the volume ratio of ethanol are preferably 19:1~1:19, more preferably 10:1~1:19,
Most preferably 5:1~1:19.
In the present invention, when the light catalyzed coating includes photochemical catalyst, colloidal sol and solvent；Light in the light catalyzed coating
The quality of catalyst and the volume ratio of solvent are preferably 1~30g：1L, more preferably 3~20g:1L, most preferably 5~15g:
1L；The quality of colloidal sol and the volume ratio of solvent are preferably 0.1~15g in the light catalyzed coating：1L, more preferably 0.3~
10g:1L, most preferably 0.5~5g:1L.
In the present invention, when the light catalyzed coating includes photochemical catalyst, colloidal sol and solvent, the system of the light catalyzed coating
Preparation Method preferably includes following steps：
Photochemical catalyst and solvent are subjected to the first ultrasonic mixing, obtain photocatalyst dispersion liquid；
Photocatalyst dispersion liquid and colloidal sol are subjected to the second ultrasonic mixing, obtain light catalyzed coating.
Photochemical catalyst and solvent are carried out the first ultrasonic mixing by the present invention, obtain photocatalyst dispersion liquid.In the present invention,
The power of first ultrasonic mixing is preferably 200~500W, more preferably 300~400W；First ultrasonic mixing when
Between be preferably 0.25~2h, most preferably more preferably 0.4~1.5h, 0.5~1h.
After obtaining photocatalyst dispersion liquid, photocatalyst dispersion liquid and colloidal sol are carried out the second ultrasonic mixing by the present invention, are obtained
To light catalyzed coating.In the present invention, the power of second ultrasonic mixing is preferably 200~500W, more preferably 300~
400W；The time of second ultrasonic mixing is preferably 0.25~2h, more preferably 0.4~1.5h, most preferably 0.5~1h.
In the present invention, when the light catalyzed coating includes the photocatalyst dispersion liquid and sol solution of packing；The light
The quality of photochemical catalyst and the volume ratio of solvent are preferably 1~30g in catalyst dispersion：1L, more preferably 3~20g:1L,
Most preferably 5~15g:1L；The quality of colloidal sol and the volume ratio of solvent are 0.1~15g in the sol solution：1L, more preferably
For 0.3~10g:1L, most preferably 0.5~5g:1L.
In the present invention, when the light catalyzed coating includes the photocatalyst dispersion liquid and sol solution of packing, the light
The preparation method of catalyst dispersion is preferably identical with such scheme, will not be repeated here.
In the present invention, the preparation method of the sol solution preferably includes following steps：After colloidal sol and solvent are mixed
Ultrasound, obtain sol solution.In the present invention, the ultrasonic power is preferably 200~500W, more preferably 300~400W；
The ultrasonic time is preferably 0.25~2h, more preferably 0.4~1.5h, most preferably 0.5~1h.
In the present invention, the material of the photocatalysis simulative grass be preferably polyethylene, it is polyester, polypropylene, polyvinyl chloride, poly-
One or more of mixtures in acid amides and ethylene-vinyl acetate copolymer, in a particular embodiment of the present invention, specifically may be used
Think plastic products simulative grass, fibre simulative grass or plastics-fiber mixed product simulative grass.The present invention is by simulative grass
Surface coating light catalyzed coating makes simulative grass possess light-catalysed function, and in the present invention, the photochemical catalyst is in simulative grass table
The dry film load capacity in face is preferably 0.1~12g/m2, more preferably 0.2~10g/m2, most preferably 0.5~8g/m2。
The invention provides the preparation method of photocatalysis simulative grass described in such scheme, comprise the following steps：
(1) when the light catalyzed coating includes photochemical catalyst, colloidal sol and solvent, light catalyzed coating is sprayed at simulative grass
Surface, obtain the simulative grass coated with light catalyzed coating wet film；
Or, when the photochemical catalyst includes photocatalysis dispersion liquid and sol solution, by the photocatalysis dispersion liquid and molten
Sol solution is sprayed at simulative grass surface respectively, obtains the simulative grass coated with light catalyzed coating wet film；
(2) simulative grass coated with light catalyzed coating wet film is dried, obtains photocatalysis simulative grass.
In the present invention, when the light catalyzed coating includes photochemical catalyst, colloidal sol and solvent, light catalyzed coating is sprayed
In simulative grass surface, the simulative grass coated with light catalyzed coating wet film is obtained.In the present invention, the flow of the spraying is preferably
50~300ml/min, more preferably 60~250ml/min, most preferably 75~200ml/min；Shower nozzle is with imitating during the spraying
The air line distance on very careless surface is preferably 5~25cm, more preferably 7~20cm, most preferably 10~15cm；The photocatalysis applies
Expect that the quantity for spray on simulative grass surface is preferably 50~1000ml/m2, more preferably 100~800ml/m2。
In the present invention, when the photochemical catalyst includes photocatalysis dispersion liquid and sol solution, by the photocatalysis point
Dispersion liquid and sol solution are sprayed at simulative grass surface respectively, obtain the simulative grass coated with light catalyzed coating wet film.The present invention is right
The spraying order of the photocatalyst dispersion liquid and sol solution does not have particular/special requirement, can first spray photocatalyst dispersion liquid,
Sol solution is sprayed again, can also first spray sol solution, then spray photocatalyst dispersion liquid.In the present invention, the light is urged
The spraying flow for changing dispersion liquid and sol solution is preferably 50~300ml/min, more preferably 60~250ml/min, most preferably
For 75~200ml/min；The air line distance on shower nozzle and simulative grass surface is preferably 5~25cm during the spraying, more preferably 7~
20cm, most preferably 10~15cm.
In the present invention, the thickness of the light catalyzed coating wet film is preferably 50nm~200 μm, and more preferably 200nm~
50μm。
After obtaining the simulative grass coated with light catalyzed coating wet film, the present invention is by described coated with light catalyzed coating wet film
Simulative grass is dried, and obtains photocatalysis simulative grass.The present invention does not have particular/special requirement to the concrete mode of the drying, will can coat
The solvent for having the simulative grass surface of light catalyzed coating wet film removes complete；In a particular embodiment of the present invention, it is described dry
Dry is preferably that room temperature is dried or dried；The temperature of the drying is preferably 80~200 DEG C, more preferably 100~150 DEG C；This hair
The bright time to drying or drying does not have particular/special requirement, can remove solvent complete.The present invention is urged light by drying
The solvent changed in coating is removed, and photochemical catalyst and colloidal sol are supported in the form of catalyst granules and sol particle after solvent removes
Simulative grass surface, the two can form three-dimensional stacking structure.
In a particular embodiment of the present invention, can to ensure that the catalyst loadings on simulative grass surface reach above-mentioned requirements
Multiple spraying-drying is carried out, that is, after being coated with the simulative grass drying of light catalyzed coating wet film, then in gained photocatalysis simulative grass
Surface is sprayed again, is then dried, the like, until the photocatalyst amount on simulative grass surface meets above-mentioned want
Ask；In a particular embodiment of the present invention, the photocatalyst amount for drying post-simulation grass surface is detected, is urged further according to institute's light requirement
The load capacity of agent determines the number of spraying-drying.
Prepared present invention also offers preparation method described in the photocatalysis simulative grass described in such scheme or such scheme
Application of the photocatalysis simulative grass in photocatalysis.In the present invention, the photocatalysis simulative grass is preferably applied to Water warfare or sky
In gas purification；In the present invention, the Water warfare is mainly the catalysis oxidation to organic pollution, and the organic pollution is preferred
Including organic dyestuff, benzene ring type compounds, naphthalene cyclics or the poisonous aromatic compounds in industry or sanitary wastewater
Deng；The purification of air is mainly the catalysis oxidation to volatile organic contaminant, and the volatile organic contaminant preferably wraps
Include the degradation of indoor air VOCs such as formaldehyde, mercaptoethanol, toluene, hydro carbons or benzene homologues or compound.The present invention is to described
The concrete application method of photocatalysis simulative grass does not have particular/special requirement, using application process well known to those skilled in the art,
Specifically such as it is placed directly in air or water, photocatalysis simulative grass is carried out catalysis oxygen to organic pollution in the presence of light
Change.
Photocatalysis simulative grass of the present invention does not have particular/special requirement to photocatalysis response light source, uses people in the art
Photocatalysis response light source known to member, it is specific such as ultraviolet light, sunshine, fluorescent lamp, fluorescent lamp, LED, xenon lamp and deuterium
Lamp etc..
Photocatalysis simulative grass provided by the invention and its preparation method and application is carried out in detail with reference to embodiment
Illustrate, but they can not be interpreted as limiting the scope of the present invention.
Embodiment 1
(1) the anatase crystal TiO by 1g particle diameters for 300nm2It is placed in conical flask, adds 100ml mixed solvents, 400W
Lower ultrasonic 0.5h, obtains photocatalyst dispersion liquid；The in the mixed solvent deionized water and the volume ratio of ethanol are 5:3.
(2) take 0.5ml Ludox to be placed in conical flask, add 99.5ml mixed solvents, ultrasonic 0.5h under 400W, obtain molten
Sol solution；The in the mixed solvent deionized water and the volume ratio of ethanol are 5:3；The thickness of silica gel is 20 ± 1wt%, pH
For 9, aerosol particle size size is 10~20nm.
(3) the anatase crystal TiO by 1g particle diameters for 300nm2It is placed in conical flask, adds 100ml mixed solvents, 400W
Lower ultrasonic 0.5h, obtains TiO2Dispersion liquid；The in the mixed solvent deionized water and the volume ratio of ethanol are 5:3；In the TiO2
0.5ml Ludox is added in dispersion liquid, ultrasonic 0.5h under 400W, obtains photocatalyst coating；The thickness of silica gel is 20
± 1wt%, pH 9, aerosol particle size size are 10~20nm.
Experiment 1：Take the polyvinyl chloride that a plant height is 5cm to emulate You Jiali grass, the sol solution in (2) is loaded on high-tension electricity
Sprayed in dynamic spray gun, gun traffic is set to 100ml/min, spray distance 15cm, and quantity for spray is about 0.5ml；Again by (1)
In photocatalyst dispersion liquid be loaded on high-voltage electric spray gun in sprayed, gun traffic is set to 100ml/min, and spray distance is
15cm, quantity for spray are about 0.5ml.After the completion of spraying in 80 DEG C of baking ovens drying and processing 15min, obtained photocatalysis simulative grass
(photocatalyst amount is 0.5g/m2), it is designated as photocatalysis simulative grass A.
Experiment 2：Take the polyvinyl chloride that a plant height is 5cm to emulate You Jiali grass, the sol solution in (2) is loaded on high-tension electricity
Sprayed in dynamic spray gun, gun traffic is set to 100ml/min, spray distance 15cm, and quantity for spray is about 0.5ml；Again by (1)
In photocatalyst dispersion liquid be loaded on high-voltage electric spray gun in sprayed, gun traffic is set to 100ml/min, and spray distance is
15cm, quantity for spray are about 0.5ml.After the completion of spraying in 80 DEG C of baking ovens drying and processing 15min.Repeat above-mentioned spraying, drying step
Suddenly once, obtained photocatalysis simulative grass, being designated as photocatalysis simulative grass B, (photocatalyst amount is 1g/m2)。
Experiment 3：The polyvinyl chloride that a plant height is 5cm is taken to emulate You Jiali grass, by the catalyst dispersion in (3) loaded on height
Sprayed in pressure electric spray gun, gun traffic is set to 100ml/min, spray distance 15cm, and quantity for spray is about 0.5ml, spray
After the completion of painting in 80 DEG C of baking ovens drying and processing 15min, obtained photocatalysis simulative grass, be designated as photocatalysis simulative grass C (photocatalysis
Agent load capacity is 0.5g/m2)。
Experiment 4：The polyvinyl chloride that a plant height is 5cm is taken to emulate You Jiali grass, by the catalyst dispersion in (3) loaded on height
Sprayed in pressure electric spray gun.Gun traffic is set to 100ml/min, spray distance 15cm, and quantity for spray is about 0.5ml.Spray
After the completion of painting in 80 DEG C of baking ovens drying and processing 15min.Repeat above-mentioned spraying, baking step once, obtained photocatalysis emulation
Grass, being designated as photocatalysis simulative grass D, (photocatalyst amount is 1g/m2)。
Control experiment：The polyvinyl chloride that a plant height is 5cm is taken to emulate You Jiali grass, the photochemical catalyst point that will be prepared in (1)
Dispersion liquid is loaded in high-voltage electric spray gun and sprayed, and then dries；Spray flow, spray distance, quantity for spray, drying temperature and when
Between it is all consistent with experiment 1, gained simulative grass is designated as photocatalysis simulative grass control group.
Photocatalytic degradation is tested：Under simulated solar irradiation, by the photocatalysis simulative grass A being prepared, photocatalysis simulative grass B,
Photocatalysis simulative grass C, photocatalysis simulative grass D and photocatalysis simulative grass control group carry out photocatalytic degradation experiment, and step is as follows：
Using methylene blue as substrate, reacted in xenon lamp aging chamber, a sample is taken per 5min, then with purple
Outside-vis spectroscopy degree measurement tries the change of its absorbance, so as to calculate change of the Methylene Blue in Solution concentration with the reaction time
Change.Wherein, the initial concentration of methylene blue is 5 × 10-5Mol/L, reaction temperature are 25 DEG C, total reaction time 60min, as a result
As shown in Figure 1.
As seen from Figure 1, removal speed of the photocatalysis simulative grass that method provided by the invention obtains for methylene blue
Rate is higher, and in 10min, photocatalysis simulative grass provided by the invention is up to 85% to the clearance of methylene blue, and compares
The clearance of group only has 54%.In 30min, photocatalysis simulative grass provided by the invention has reached entirely to the clearance of methylene blue
90%, up to 95%, and the clearance of control group only has 75%.
Photocatalytic degradation cyclic test：The photocatalysis simulative grass D deionized waters of a photocatalytic degradation experiment will be completed
Washing three times, is dried at 60 DEG C, then photocatalytic degradation experiment is carried out according to above-mentioned steps, then again to photocatalysis simulative grass
Washed, dry and photocatalytic degradation experiment, repeat 6 times.Test result indicates that after 6 cyclic tests, photocatalysis
Simulative grass is 91% to the clearance of methylene blue, illustrates that catalytic activity is substantially unchanged, illustrates the light catalyzed coating of the present invention
In photochemical catalyst and simulative grass adhesion it is strong, it is difficult for drop-off.
Embodiment 2
(1) the anatase crystal TiO by 1.25g particle diameters for 100nm2It is placed in conical flask, adds 100ml mixed solvents,
Ultrasonic 0.5h, obtains TiO under 400W2Dispersion liquid；The in the mixed solvent deionized water and the volume ratio of ethanol are 5:1；Institute
State TiO20.5ml Ludox is added in dispersion liquid, ultrasonic 0.5h under 400W, obtains light catalyzed coating；The Ludox pH is
9, concentration is 20 ± 1wt%, and aerosol particle size size is 10~20nm.
(2) polyvinyl chloride that a plant height is 5cm is taken to emulate You Jiali grass, by the light catalyzed coating in step (1) loaded on height
Sprayed in pressure electric spray gun；Gun traffic is set to 150ml/min, spray distance 10cm, and quantity for spray is about 0.5ml；Spray
After the completion of painting in 80 DEG C of baking ovens drying and processing 30min, obtaining photocatalysis simulative grass, (photocatalyst amount is 0.5g/m2)。
It is real that photocatalytic degradation is carried out to gained photocatalysis simulative grass according to the photocatalytic degradation test method in embodiment 1
Test, wherein, the concentration of methylene blue is 5 × 10-5Mol/L, reaction temperature is 25 DEG C, reaction time 30min, in 30min
Clearance can reach more than 80%.
Photocatalytic degradation cyclic test, after 6 cyclic tests, photocatalysis simulative grass are carried out according to the method in embodiment 1
More than 80% still can reach to the clearance of methylene blue.
Embodiment 3
(1) 15g urea is placed in the semiclosed alumina crucible with lid, with 2 DEG C/min liter in tube furnace
Warm speed rises to 550 DEG C and maintains 5h, obtains g-C3N4。
(2) the anatase crystal TiO by 0.5g particle diameters for 50nm2With the g-C of 0.5g in step (1)3N4It is placed in conical flask
In, 100ml mixed solvents are added, ultrasonic 0.5h under 400W, obtain photocatalyst dispersion liquid.The in the mixed solvent deionized water
Volume ratio with ethanol is 3:1；1ml Ludox is added in the photocatalyst dispersion liquid, ultrasonic 0.5h under 400W, is obtained
Light catalyzed coating；The Ludox pH is 10, and concentration is 20 ± 1wt%, and aerosol particle size size is 10~20nm.
(3) polyvinyl chloride that a plant height is 5cm is taken to emulate You Jiali grass, by the light catalyzed coating in step (2) loaded on height
Sprayed in pressure electric spray gun, gun traffic is set to 175ml/min, spray distance 15cm, and quantity for spray is about 0.5ml；Spray
After the completion of painting in 90 DEG C of baking ovens drying and processing 30min, obtaining photocatalysis simulative grass, (photocatalyst amount is 0.5g/m2)。
It is real that photocatalytic degradation is carried out to gained photocatalysis simulative grass according to the photocatalytic degradation test method in embodiment 1
Test, wherein, the concentration of methylene blue is 5 × 10-5Mol/L, reaction temperature are 25 DEG C, and the clearance in 30min can reach
More than 80%.
Photocatalytic degradation cyclic test, after 6 cyclic tests, photocatalysis simulative grass are carried out according to the method in embodiment 1
More than 80% still can reach to the clearance of methylene blue.
Embodiment 4
(1) 15g urea is placed in the semiclosed alumina crucible with lid, with 2 DEG C/min liter in tube furnace
Warm speed rises to 550 DEG C and maintains 5.5h, obtains g-C3N4。
By g-C3N41.0g and 100mLN, dinethylformamide mix, and ultrasonic 5h under 500W, obtain g-C3N4Dispersion liquid；
By the Detitanium-ore-type TiO that particle diameter is 50nm22.0g and 100mLN, dinethylformamide mix, and ultrasonic 8h under 200W, obtain
TiO2Dispersion liquid；By the g-C3N4Dispersion liquid and TiO2Dispersion liquid mixes, and stirs 2h under 500rpm, obtains mixed dispersion liquid；
By unsubstituted iron-phthalocyanine (FePc) 40mg and 50mLN, dinethylformamide mixes, and ultrasonic 30h under 200W, obtains
Unsubstituted iron-phthalocyanine solution；
Mixed dispersion liquid is added drop-wise in unsubstituted iron-phthalocyanine solution with 50mL/h speed, 8h is reacted at 45 DEG C, will be anti-
The material obtained after should terminating is filtered with G6 sand core funnels, is washed 3 times with DMF, and with 0.2mol/L's
The H of NaOH solution and 0.1mol/L2SO4Wash 2 times respectively, be finally washed to neutrality with ultrapure, 16h is freeze-dried in -60 DEG C,
Obtain titanium dioxide and class graphite phase carbon nitride and iron-phthalocyanine composite photo-catalyst (g-C3N4/FePc/TiO2)。
(2) by the g-C of 1g in step (1)3N4/FePc/TiO2It is placed in conical flask, adds 100ml mixed solvents, 400W
Lower ultrasonic 0.5h, obtains photocatalyst dispersion liquid, and the volume ratio of the in the mixed solvent deionized water and ethanol is 3:2；
1ml Ludox is taken, 100 times is diluted with deionized water, obtains sol solution, the thickness of silica gel is 20 ±
1wt%, pH 10, aerosol particle size size are 8~15nm.
(3) take the polypropylene that a plant height is 5cm to emulate You Jiali grass, the photocatalyst dispersion liquid in step (2) is loaded on
Sprayed in high-voltage electric spray gun, then pour out remaining photocatalyst dispersion liquid, then the sol solution in step (2) is loaded on
Sprayed in high-voltage electric spray gun；Gun traffic is set to 200ml/min, spray distance 17cm, and each quantity for spray is about
0.5ml, after the completion of spraying in 100 DEG C of baking ovens drying and processing 20min, repeat above-mentioned spraying process once, place into 100 DEG C
Drying and processing 20min in baking oven, obtaining photocatalysis simulative grass, (photocatalyst amount is 1g/m2)。
It is real that photocatalytic degradation is carried out to gained photocatalysis simulative grass according to the photocatalytic degradation test method in embodiment 1
Test, wherein, the concentration of methylene blue is 5 × 10-5Mol/L, reaction temperature are 25 DEG C, and the clearance in 15min can reach
More than 85%.
Photocatalytic degradation cyclic test, after 6 cyclic tests, photocatalysis simulative grass are carried out according to the method in embodiment 1
More than 85% still can reach to the clearance of methylene blue.
Embodiment 5
(1) g-C that will be prepared in embodiment 43N4/FePc/TiO2Catalyst 0.5g is placed in conical flask with 0.5g tungstic acids
In, 100ml mixed solvents are added, ultrasonic 0.5h under 400W, obtain photocatalyst dispersion liquid；The in the mixed solvent deionized water
Volume ratio with ethanol is 1:2.
0.75ml Ludox is added in the photocatalyst dispersion liquid, ultrasonic 0.5h under 400W, obtains photocatalysis painting
Material；The Ludox pH is 10, and concentration is 20 ± 1wt%, and aerosol particle size size is 10~20nm.
(2) polyvinyl chloride that a plant height is 5cm is taken to emulate You Jiali grass, by the light catalyzed coating in step (1) loaded on height
Sprayed in pressure electric spray gun；Gun traffic is set to 225ml/min, spray distance 20cm, and quantity for spray is about 0.5ml.Spray
After the completion of painting in 115 DEG C of baking ovens drying and processing 15min, obtaining photocatalysis simulative grass, (photocatalyst amount is 0.5g/m2)。
It is real that photocatalytic degradation is carried out to gained photocatalysis simulative grass according to the photocatalytic degradation test method in embodiment 1
Test, wherein, the concentration of methylene blue is 5 × 10-5Mol/L, reaction temperature are 25 DEG C, and the clearance in 15min can reach
More than 95%.
Photocatalytic degradation cyclic test, after 6 cyclic tests, photocatalysis simulative grass are carried out according to the method in embodiment 1
More than 95% still can reach to the clearance of methylene blue.
Embodiment 6
(1) 15g urea is placed in the semiclosed alumina crucible with lid, with 2 DEG C/min liter in tube furnace
Warm speed rises to 515 DEG C and maintains 5h, obtains g-C3N4。
(2) by the g-C of 0.6g in 0.4g tungstic acids and step (1)3N4It is placed in conical flask, it is molten adds 100ml mixing
Agent, ultrasonic 0.5h under 400W, obtains photocatalyst dispersion liquid；The in the mixed solvent deionized water and the volume ratio of ethanol are 1:
5；
1.5ml Ludox is taken, 100 times is diluted with deionized water, obtains sol solution；The thickness of silica gel be 20 ±
1wt%, pH 9, aerosol particle size size are 8~15nm.
(3) take the polyester that a plant height is 5cm to emulate You Jiali grass, the sol solution in step (2) is loaded on high-voltage electric
Sprayed in spray gun, then pour out surplus solution, then the photocatalyst dispersion liquid in (2) is loaded in high-voltage electric spray gun
Row spraying；Gun traffic is set to 250ml/min, and spray distance 25cm, each quantity for spray is about 0.5ml.After the completion of spraying
The drying and processing 10min in 130 DEG C of baking ovens, obtaining photocatalysis simulative grass, (photocatalyst amount is 0.5g/m2)。
It is real that photocatalytic degradation is carried out to gained photocatalysis simulative grass according to the photocatalytic degradation test method in embodiment 1
Test, wherein, the concentration of methylene blue is 5 × 10-5Mol/L, reaction temperature are 25 DEG C, and the clearance in 30min can reach
More than 95%.
Photocatalytic degradation cyclic test, after 6 cyclic tests, photocatalysis simulative grass are carried out according to the method in embodiment 1
More than 95% still can reach to the clearance of methylene blue.
Embodiment 7
In order to be more easily observed whether photocatalytic process simulative grass base material is easily corroded, the present embodiment is by photocatalysis
Agent is sprayed at carries out photocatalysis experiment with simulative grass material identical white polyester fibrofelt surface, observes phenomenon, specific steps
It is as follows：
(1) light catalyzed coating prepared by the step of embodiment 1 (3) is sprayed at polyester fiber felt surface, gun traffic is set to
100ml/min, spray distance 15cm, quantity for spray are about 0.5ml, after the completion of spraying in 100 DEG C of baking ovens drying and processing
15min, repeat above-mentioned spraying, baking step once, obtain experimental group；
(2) TiO that will be prepared in the step of embodiment 1 (1)2Dispersion liquid (light catalyzed coating for not including colloidal sol) is sprayed at
Polyester fiber felt surface, spraying conditions are consistent with (1), obtain control group；
Above-mentioned control group is irradiated under 400W uviol lamps with experimental group, irradiation distance 30cm, irradiation time is
8h, polyester fiber felt surface changes after the completion of observation irradiation, and observation result according to Fig. 2 as shown in Fig. 2 can be seen that control group
Polyester fiber felt has turned yellow, and the polyester fiber felt color of experimental group does not change substantially, illustrates the polyester fiber felt of control group
Corrode extremely serious, and experimental group is to polyester fiber felt no corrosion.The result of the test shows the photocatalysis emulation of the present invention
Grass does not produce corrosion in photocatalytic process to simulative grass material itself, will not damage the performance of simulative grass in itself.
As seen from the above embodiment, it is only the preferred embodiment of the present invention that the present invention is described above, it is noted that for
For those skilled in the art, under the premise without departing from the principles of the invention, can also make it is some improvement and
Retouching, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of photocatalysis simulative grass, it is prepared by light catalyzed coating coated in simulative grass surface；The light catalyzed coating bag
Include photochemical catalyst, colloidal sol and solvent or photocatalyst dispersion liquid and sol solution including packing；
The photochemical catalyst is that titanium dioxide, titanium dioxide-graphene complex, titanium dioxide-class graphite phase carbon nitride are answered
Compound, titanium dioxide-class graphite phase carbon nitride-metal phthalocyanine compound, titanium dioxide-tungstic acid compound, class graphite-phase
Carbonitride-tungstic acid compound, class graphite phase carbon nitride-metal phthalocyanine compound, metal phthalocyanine-tungstic acid compound,
In the compound of titanium dioxide-class graphite phase carbon nitride-tungstic acid, titanium dioxide-metal phthalocyanine-tungstic acid compound
One or more of mixtures；
The colloidal sol is Ludox and/or Alumina gel.
2. photocatalysis simulative grass according to claim 1, it is characterised in that the pH value of the colloidal sol is 3~11；
The concentration of the colloidal sol is 2~50wt%；
The particle diameter of the colloidal sol is 1~100nm.
3. photocatalysis simulative grass according to claim 1 or 2, it is characterised in that also include graphene in the colloidal sol；Institute
The mass content for stating graphene in colloidal sol is the 0.1~2% of photochemical catalyst quality.
4. photocatalysis simulative grass according to claim 1, it is characterised in that the light catalyzed coating include photochemical catalyst,
When colloidal sol and solvent；The quality of photochemical catalyst and the volume ratio of solvent are 1~30g in the light catalyzed coating：1L；The light is urged
It is 0.1~15g to change the quality of colloidal sol and the volume ratio of solvent in coating：1L；
When the light catalyzed coating includes the photocatalyst dispersion liquid and sol solution of packing；Light in the photocatalyst dispersion liquid
The quality of catalyst and the volume ratio of solvent are 1~30g：1L；The quality of colloidal sol and the volume ratio of solvent in the sol solution
For 0.1~15g：1L.
5. the photocatalysis simulative grass according to Claims 1 to 4 any one, it is characterised in that the photochemical catalyst is imitative
The dry film load capacity on very careless surface is 0.1~12g/m2。
6. photocatalysis simulative grass according to claim 5, it is characterised in that the material of the simulative grass is polyethylene, gathered
In ester, polypropylene, polyvinyl chloride, polyamide, ethylene-vinyl acetate copolymer, polyacrylonitrile, polyurethanes and cellulose
One or more of mixtures.
7. the preparation method of photocatalysis simulative grass, comprises the following steps described in claim 1~6 any one：
(1) when the light catalyzed coating includes photochemical catalyst, colloidal sol and solvent, light catalyzed coating is sprayed at simulative grass table
Face, obtain the simulative grass coated with light catalyzed coating wet film；
Or, when the photochemical catalyst includes photocatalysis dispersion liquid and sol solution, the photocatalysis dispersion liquid and colloidal sol is molten
Liquid is sprayed at simulative grass surface respectively, obtains the simulative grass coated with light catalyzed coating wet film；
(2) simulative grass coated with light catalyzed coating wet film is dried, obtains photocatalysis simulative grass.
8. preparation method according to claim 7, it is characterised in that the flow of the spraying stands alone as 50~300ml/
min；The distance on shower nozzle and simulative grass surface stands alone as 5~25cm during the spraying.
9. preparation side described in the photocatalysis simulative grass or claim 7~8 any one described in claim 1~6 any one
The application of photocatalysis simulative grass prepared by method in photocatalysis.
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| CN102614940A (en) * | 2012-02-29 | 2012-08-01 | 北京科技大学 | Preparation method of visible light response water-based photocatalysis spray coating slurry |
| CN106391025A (en) * | 2016-09-25 | 2017-02-15 | 江苏博恩环境工程成套设备有限公司 | Foam metal loaded grapheme-TiO2-SiO2 photocatalysis composite material and preparation method |
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| CN102614940A (en) * | 2012-02-29 | 2012-08-01 | 北京科技大学 | Preparation method of visible light response water-based photocatalysis spray coating slurry |
| CN106391025A (en) * | 2016-09-25 | 2017-02-15 | 江苏博恩环境工程成套设备有限公司 | Foam metal loaded grapheme-TiO2-SiO2 photocatalysis composite material and preparation method |
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