CN109926039A - The method for preparing zinc oxide-redox graphene composite material - Google Patents
The method for preparing zinc oxide-redox graphene composite material Download PDFInfo
- Publication number
- CN109926039A CN109926039A CN201711364544.6A CN201711364544A CN109926039A CN 109926039 A CN109926039 A CN 109926039A CN 201711364544 A CN201711364544 A CN 201711364544A CN 109926039 A CN109926039 A CN 109926039A
- Authority
- CN
- China
- Prior art keywords
- zinc
- composite material
- oxide
- graphene composite
- redox graphene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The present invention provides a kind of methods for preparing zinc oxide-redox graphene composite material comprising: 1) offer include the mixture of graphene oxide, at least one zinc source, at least one weak base and at least one photoinitiator；With the mixture 2) obtained with ultraviolet light by step 1), zinc oxide-redox graphene composite material is obtained.The invention further relates to the zinc oxide-redox graphene composite material obtained by the method and its purposes in degradable organic pollutant, purification air, processing industrial waste gas and degradative plastics.
Description
Technical field
The present invention relates to a kind of methods for preparing zinc oxide-redox graphene composite material.The invention further relates to
Zinc oxide-redox graphene composite material and its in degradable organic pollutant, purification air, processing industrial waste gas and drop
Solve the purposes in plastics.
Background technique
It is an attractive technology by organic pollutant light degradation in field of environment protection.Light degradation without using
Poisonous and hazardous chemicals, it is thus only necessary to catalysis material and light source.
Qin et al. (392 (2017) 196-203 of Applied Surface Science) reports a kind of ZnO microsphere-reduction
Stannic oxide/graphene nano composite material and its application in Methyl blueness dyestuff.The nanocomposite is as follows
Preparation: through 2 hours addition zinc acetate solutions in the graphene oxide solution comprising ammonium hydrogen carbonate, then by products therefrom 60
12 hours dry at DEG C, finally by gained ZnO microsphere-graphene oxide composite material, calcining 2h is obtained under 300 DEG C and argon gas
ZnO microsphere-redox graphene composite material.The time of the preparation method is very long and needs high temperature, thus energy consumption is high.
Summary of the invention
, time more in view of the step of preparing zinc oxide-redox graphene composite material in the prior art is long, is not easy work
The problems such as industry, the present inventor carried out in terms of preparing zinc oxide-redox graphene composite material extensively and
In-depth study again, as a result, it has been found that, by weak comprising graphene oxide, at least one zinc source, at least one with ultraviolet light
The mixture of alkali and at least one photoinitiator with one-step method while redox graphene and can prepare zinc oxide-reduction
The composite material of graphene oxide.
The present invention is based on the above discovery and is accomplished.
The object of the present invention is to provide a kind of simple process it is compound to prepare zinc oxide-redox graphene for one-step method
The method of material.The method has the advantages that (1) preparation process is mild；(2) reduction of graphene oxide and zinc oxide
The formation time of grain is short；(3) preparation method is easy；(4) equipment low energy consumption；And had by the material that the method obtains as follows
Advantage: the dispersion degree of (5) Zinc oxide particles on the surface of graphene is high；(6) to the efficient photocatalytic Degradation of organic pollutant；
(7) workable to recycle degree height；(8) cheap and can prepare with scale.
Realize that the object of the invention technical solution can be summarized as follows:
1. a kind of method for preparing zinc oxide-redox graphene composite material comprising following steps:
1) it provides comprising the mixed of graphene oxide, at least one zinc source, at least one weak base and at least one photoinitiator
Close object；With
2) mixture obtained with ultraviolet light by step 1) obtains zinc oxide-redox graphene composite wood
Material.
2. according to the 1st method for preparing zinc oxide-redox graphene composite material, wherein the oxidation stone
Black alkene is preferably prepared by Hummers method by Brodie method, Staudenmaier method or the preparation of Hummers method.
3. according to the 1st or 2 method for preparing zinc oxide-redox graphene composite material, wherein the oxygen
The average piece diameter of graphite alkene is 0.5-30 microns, preferably 1-15 microns.
4. according to any one of the 1-3 methods for preparing zinc oxide-redox graphene composite material, wherein
The total weight of mixture based on step 1), graphene oxide is with 100-5000 weight ppm, preferably 200-2000 weight ppm, most
It is preferred that the amount of 250-1000 weight ppm exists.
5. according to any one of the 1-4 methods for preparing zinc oxide-redox graphene composite material, wherein
The zinc source is selected from zinc hydroxide, simple substance zinc and zinc salt；The zinc salt is, for example, the strong acid salt or salt of weak acid of zinc, such as sulfuric acid
Salt, nitrate, phosphate, carbonate, C1-C6Carboxylate, halide, borate, sulfide, cyanide；It is preferred that zinc source is selected from sulphur
Change zinc, zinc bromide, zinc cyanide, zinc chloride, zinc sulfate, zinc carbonate, trbasic zinc phosphate, zinc borate, zinc nitrate, zinc dihydrogen phosphate, acetic acid
Zinc, zinc hydroxide and simple substance zinc.
6. according to any one of the 1-5 methods for preparing zinc oxide-redox graphene composite material, wherein
The total weight of mixture based on step 1), zinc source is with 0.05-8 weight %, preferably 0.1-5 weight %, most preferably 0.2-2 weight
The amount for measuring % exists.
7. according to any one of the 1-6 methods for preparing zinc oxide-redox graphene composite material, wherein
In the mixture of step 1), the weight ratio of zinc source and graphene oxide is 200:1-1:1, preferably 100:1-2:1, more preferably
60:1-3:1。
8. according to any one of the 1-7 methods for preparing zinc oxide-redox graphene composite material, wherein
The weak base is selected from ammonium hydroxide, basic ammonium salts or organic base；Basic ammonium salts are, for example, ammonium carbonate or ammonium hydrogen carbonate；Organic bases are for example
Linearly, cyclic annular and/or branching C1-C8Mono-, two- and trialkylamine, linear or branching C1-C8Mono-, two- and three alkanols
Amine, linear or branching C1-C8Mono-, two- or trialkanolamine linear or branching C1-C8Alkyl ether, polyamines such as diethylidene three
Amine, mono- two-or triarylamine, preferably weak base is selected from ammonium hydroxide, methylamine, dimethylamine, trimethylamine, ethamine, diethylamine, triethylamine, second
Hydramine, diethanol amine, triethanolamine, aniline, diphenylamines and triphenylamine.
9. according to any one of the 1-8 methods for preparing zinc oxide-redox graphene composite material, wherein
The total weight of mixture based on step 1), weak base is with 5-50 weight %, preferably 8-40 weight %, most preferably 12-25 weight %
Amount exist.
10. according to any one of the 1-9 methods for preparing zinc oxide-redox graphene composite material,
Described in photoinitiator be the photoinitiator selected from following classification: mono- or bisacylphosphine oxides, benzophenone, alkyl phenones,
Phenylglyoxalates and its ester, benzoin, benzil, thioxanthone, anthraquinone and the luxuriant titanium of virtue or iron arene complexes, preferably phenyl it is bis- (2,
4,6- trimethylbenzoyl) phosphine oxide, the fluoro- 3- pyrroles's phenyl titanocenes of double 2,6- bis-, 1- (6- o-methyl-benzene formoxyl -9-
Ethyl -9H- carbazole -3- base)-acetophenone oxime-O- acetic acid esters, 2,4,6- trimethylbenzoy-dipheny phosphine oxide, 2,4,6- tri-
Methyl benzoyl phosphinic acid ethyl ester, 1- hydroxy-cyclohexyl-phenyl ketone, 2- hydroxy-2-methyl -1- phenylacetone, 2,4- diethyl
Base thioxanthone, 2- isopropyl thioxanthone, methyl benzoylformate, 2- benzyl -2- dimethylamino -1- (4- morpholinyl phenyl)
Butanone, benzophenone, benzil, benzoin, α, the chloro- 4- propoxyl group sulphur of α-diethoxy acetophenone, 4- methyl benzophenone, 1-
Miscellaneous anthrone, 2- ethyl hydrazine, 4,4 '-bis- (dimethylamino) benzophenone, 4,4 '-bis- (lignocaine) benzophenone and 2,4,6-
Tri-methyl benzophenone.
11. according to any one of the 1-10 methods for preparing zinc oxide-redox graphene composite material,
In in the mixture of step 1), the weight ratio of photoinitiator and graphene oxide is 50:1-2:1, preferably 40:1-4:1, more excellent
Select 30:1-6:1.
12. according to any one of the 1-11 methods for preparing zinc oxide-redox graphene composite material,
Mixture in middle step 1) further includes at least one solvent, and the preferably described solvent is selected from C1-C6Alkanol has 2-6
The mono- or two-C of the glycol of carbon atom, glycol with 2-6 carbon atom1-C4Alkyl ether, the glycol with 2-6 carbon atom
Mono- C1-C4Alkyl ether C1-C4Carboxylate, ketone (such as acetone, cyclopentanone, cyclohexanone), diformazan with 3-7 carbon atom
Sulfoxide, n,N-Dimethylformamide, gamma-butyrolacton, tetrahydrofuran, N-Methyl pyrrolidone and diacetone alcohol, more preferable ethyl alcohol,
Ethylene glycol, the ketone with 3-7 carbon atom, propylene glycol, propylene glycol monomethyl ether, propylene glycol methyl ether acetate, dimethyl sulfoxide,
Gamma-butyrolacton, tetrahydrofuran, N-Methyl pyrrolidone and diacetone alcohol.
13. according to the 12nd method for preparing zinc oxide-redox graphene composite material, wherein step 1)
Mixture is by the way that graphite oxide, at least one zinc source, at least one weak base and at least one photoinitiator to be dispersed at least
In a kind of solvent and prepare.
14. according to any one of the 1-13 methods for preparing zinc oxide-redox graphene composite material,
The energy density irradiated in middle step 2) is 20-1000mW/cm2, preferably 50-500mW/cm2。
15. a kind of can be by zinc oxide-redox graphene composite wood that any one of 1-14 methods obtain
Material.
16. the 15th zinc oxide-redox graphene composite material degradable organic pollutant, purification air,
Handle the purposes in industrial waste gas and degradative plastics.
Detailed description of the invention:
Fig. 1: the zinc oxide-redox graphene composite material and graphite oxide of embodiment according to the present invention 7
The X-ray diffraction spectrogram of alkene.
Specific embodiment
One aspect of the present invention is related to a kind of method for preparing zinc oxide-redox graphene composite material,
Include the following steps:
1) it provides comprising the mixed of graphene oxide, at least one zinc source, at least one weak base and at least one photoinitiator
Close object；With
2) mixture obtained with ultraviolet light by step 1) obtains zinc oxide-redox graphene composite wood
Material.
In the context of the present invention, " graphite " refers to the carbon formed by the flat layers that are stacked on one another of many, the layer by
sp2The fused six-membered rings of hydbridized carbon atoms is formed.
For stringent, " graphene " is understood to mean that the single carbon layer with graphite-structure, i.e., hexagonal arrangement by 6
A sp2The single layer of the fused rings of hydbridized carbon atoms composition.However, according to the present invention, " graphene " also refers to by most 10 layers, preferably
At most 5 layers, more preferably up to 2 layers, especially by 1 layer of hexagonal arrangement by 6 sp2The fused rings of hydbridized carbon atoms composition
The material of formation.
In the context of the present invention, " graphite oxide " is understood to mean that stratiform three-dimensional structure, and single layer is by with carbonyl
Base, carboxyl, alcohol radical and the functionalized condensed C in epoxy group part6Ring is formed.Herein, graphite is not flat like that for another example for single layer, and
It is according to degree of oxidation partially or completely to protrude from plane in a zigzag.
According to the present invention, " graphene oxide " is understood to mean that by most 10 layers, preferably up to 5 layers, more preferably up to 2
Layer, the material especially formed by single layer, the layer with oxygen functional group by rolling into a ball such as epoxy group, alcohol radical, carboxyl and/or carbonyl
Condensed C6Ring is formed.
The preparation of graphene oxide is known to the person skilled in the art.For example, graphene oxide can be by by graphite
Oxide separates (removing) and prepares.Graphite oxide and graphene oxide are due to the oxygen functional group in the presence of it and with negative
Charge, therefore graphite oxide can be separated into graphene oxide in polar solvent.This can for example be promoted by using ultrasonic wave
Into.Graphite oxide is hydrophilic.The graphene oxide of removing, which is formed, disperses fabulous aqueous suspension.
The preparation of graphite oxide is equally known to the person skilled in the art；Graphite oxide usually passes through graphite
It aoxidizes and prepares.Oxygen atom is introduced into graphite by the oxidation；Particularly form alcohol radical, epoxy group, carbonyl and carboxyl.These groups
Increase the distance between each layer, the layer can be more easily separated from each other.In addition, the graphite linings of oxidation are due to oxygen-containing group
Reason and become it is more hydrophilic and have better water dispersible.
The example of graphite includes mineral and synthetic graphite, and there are also expanded graphites and intercalated graphite.
Graphite oxide usually passes through with oxidant and acid, especially strong acid treatment graphite and prepares.Oxidant used is outstanding
It is chlorate and permanganate；Acid used in particular sulfuric acid and nitric acid.
In one embodiment of the invention, graphite oxide or graphene oxide by Brodie method,
Staudenmaier method or the preparation of Hummers method.
In a preferred embodiment of the invention, the graphite oxide or graphene oxide pass through Hummers method
Preparation.It in Hummers method, reacts potassium permanganate with powdered graphite in concentrated sulfuric acid, obtains graphite oxide thin slice, this stone
It is graphene oxide that black oxide films can be vigorously stirred removing through ultrasound or high shear.
According to the present invention, the average piece diameter of the graphene oxide is 0.5-30 microns, preferably 1-15 microns.
In a preferred embodiment of the invention, based on step 1) mixture total weight, graphene oxide with
The amount of 100-5000 weight ppm, preferably 200-2000 weight ppm, most preferably 250-1000 weight ppm exist.
It can be selected from zinc hydroxide, simple substance zinc and zinc salt for zinc source of the invention.The zinc salt is, for example, the strong acid salt of zinc
Or salt of weak acid, such as sulfate, nitrate, phosphate, carbonate, C1-C6Carboxylate, halide, borate, sulfide, cyaniding
Object, preferably zinc sulphide, zinc bromide, zinc cyanide, zinc chloride, zinc sulfate, zinc carbonate, trbasic zinc phosphate, zinc borate, zinc nitrate, di(2-ethylhexyl)phosphate
Hydrogen zinc, zinc acetate, zinc hydroxide and simple substance zinc.
According to the present invention, the addition in zinc source is conducive to the reduction of graphene oxide, and the graphene oxide restored is further
Promote light degradation of the gained composite material to organic pollutant.
According to the present invention, the total weight of the mixture based on step 1), zinc source is with 0.05-8 weight %, preferably 0.1-5 weight
% is measured, the amount of most preferably 0.2-2 weight % exists.
In a preferred embodiment of the invention, in the mixture of step 1), the weight ratio in zinc source and graphene oxide
For 200:1-1:1, preferably 100:1-2:1, more preferable 60:1-3:1.
Also comprising at least one weak base in the mixture of step 1).Weak base can provide alkaline environment, in addition described weak
Alkali also acts as the effect of oxygen inhibition agent.
According to the present invention, the weak base can be ammonium hydroxide, basic ammonium salts or organic base.Basic ammonium salts are, for example, ammonium carbonate or carbon
Sour hydrogen ammonium.Organic bases are for example linear, cyclic annular and/or branching C1-C8Mono-, two- and trialkylamine, linear or branching C1-
C8Mono-, two- and trialkanolamine, linear or branching C1-C8Mono-, two- or trialkanolamine linear or branching C1-C8Alkyl
Ether, polyamines such as diethylenetriamines, mono- two-or triarylamine, preferably ammonium hydroxide, methylamine, dimethylamine, trimethylamine, ethamine, diethyl
Amine, triethylamine, ethanol amine, diethanol amine, triethanolamine, aniline, diphenylamines and triphenylamine.
According to the present invention, the total weight of the mixture based on step 1), weak base is with 5-50 weight %, preferably 8-40 weight
% is measured, the amount of most preferably 12-25 weight % exists.
According to the present invention, also comprising at least one photoinitiator in the mixture of step 1).Photoinitiator can be in purple
Graphene oxide is reduced to graphene under the irradiation of outer light.In a preferred embodiment of the invention, the photoinitiator is
Photoinitiator selected from following classification: mono- or bisacylphosphine oxides, benzophenone, alkyl phenones, phenylglyoxalates and its
Ester, benzoin, benzil, thioxanthone, anthraquinone and the luxuriant titanium of virtue or iron arene complexes, preferably bis- (2,4, the 6- trimethylbenzene first of phenyl
Acyl group) phosphine oxide, the fluoro- 3- pyrroles's phenyl titanocenes of double 2,6- bis-, 1- (6- o-methyl-benzene formoxyl -9- ethyl -9H- carbazole -3-
Base)-acetophenone oxime-O- acetic acid esters, 2,4,6- trimethylbenzoy-dipheny phosphine oxide, 2,4,6- trimethylbenzoyl phosphine
Acetoacetic ester, 1- hydroxy-cyclohexyl-phenyl ketone, 2- hydroxy-2-methyl -1- phenylacetone, 2,4- diethyl thioxanthone, 2-
Isopropyl thioxanthone, methyl benzoylformate, 2- benzyl -2- dimethylamino -1- (4- morpholinyl phenyl) butanone, hexichol first
Ketone, benzil, benzoin, α, the chloro- 4- propoxyl group thioxanthone of α-diethoxy acetophenone, 4- methyl benzophenone, 1-, 2- second
Base anthraquinone, 4,4 '-bis- (dimethylamino) benzophenone, 4,4 '-bis- (lignocaine) benzophenone, 2,4,6- trimethyl hexichol first
Ketone.
Preferred embodiment according to the present invention, in the mixture of step 1), the weight of photoinitiator and graphene oxide
Amount is than being 50:1-2:1, preferably 40:1-4:1, more preferable 30:1-6:1.
In a preferred embodiment of the invention, the mixture in step 1) further includes at least one solvent,
It is preferred that the solvent is selected from C1-C6Alkanol, the glycol with 2-6 carbon atom, the glycol with 2-6 carbon atom mono- or
Two-C1-C4The mono- C of alkyl ether, glycol with 2-6 carbon atom1-C4Alkyl ether C1-C4Carboxylate has 3-7 carbon atom
Ketone (such as acetone, cyclopentanone, cyclohexanone), dimethyl sulfoxide, gamma-butyrolacton, tetrahydrofuran, N-Methyl pyrrolidone and double
Pyruvic alcohol, more preferable ethyl alcohol, ethylene glycol, the ketone with 3-7 carbon atom, propylene glycol, propylene glycol monomethyl ether, propylene glycol monomethyl ether
Acetate, dimethyl sulfoxide, N,N-dimethylformamide, gamma-butyrolacton, tetrahydrofuran, N-Methyl pyrrolidone and diacetone alcohol.
Using solvent, the amount of solvent can account for the 40-90 weight % of the total weight of the mixture of step 1), excellent
Select 60-85 weight %.
In a preferred embodiment of the invention, the mixture in step 1) is by by graphite oxide, at least one zinc
Source, at least one weak base and at least one photoinitiator are dispersed at least one solvent and prepare.According to the present invention, described point
It dissipates and is preferably carried out by ultrasound or strong stirring.
In step 2) of the invention, the mixture obtained with ultraviolet light by step 1) obtains zinc oxide-oxygen reduction
The composite material of graphite alkene.
In one embodiment of the invention, the energy density irradiated in step 2) is 20-1000mW/cm2, preferably
50-500mW/cm2。
Light source for ultraviolet light can be high-pressure sodium lamp ultraviolet source or LED light, as 395nmLED lamp (such as is purchased
From Zhuozhou blue sky Te Deng Development Co., Ltd).
In a preferred embodiment of the invention, the method for the present invention further comprise after the irradiation of step 2),
By products therefrom centrifugation, washing and drying.
Another aspect of the present invention relates to it is a kind of can zinc oxide-redox graphene obtained by the method for the present invention answer
Condensation material.
Zinc oxide-redox graphene the composite material of the present invention also can be used for degradable organic pollutant, purification sky
Gas, processing industrial waste gas and degradative plastics.
It according to the present invention, can be by by zinc oxide-redox graphene composite material of the invention and organic contamination
Then object mixing uses ultraviolet light or visible light, the preferably mixture obtained by ultraviolet light, with degradable organic pollutant.Irradiation
Time for example can be 5 minutes to 1 hour, preferably 8 minutes to 30 minutes.
Composite material of the invention has excellent photocatalytic Degradation for organic pollutant, such as methyl orange, such as
The disposal efficiency is up at least 85%, preferably at least 90%, even as high as at least 95%.
Composite material of the invention can also be used to purify air, such as purifying the formaldehyde in air, benzene and toluene.
In one embodiment, composite material of the invention can also be used to handle industrial waste gas.
In another embodiment, composite material of the invention can be also used for degradative plastics.For example, can by plastics with
Composite material of the invention is blended, to obtain degradable composite plastics material.
Embodiment
Below with reference to specific embodiment, the invention will be further described, but should not be construed as protecting the present invention
The limitation of range.
Following embodiments or comparative example is raw materials used, equipment and the characterization being related to and detection method are as follows:
1. the disposal efficiency is tested as follows:
Instrument: ultraviolet source, 395nmLED lamp, Zhuozhou blue sky Te Deng Development Co., Ltd；
Ultraviolet-uisible spectrophotometer, PerkinElmer-LS55, measurement range 200-900nm
The disposal efficiency testing procedure:
1) the 20mL concentration in transparent glass test tube is 0.01g/L (2.7 × 10-5M it is added in methyl orange aqueous solution)
Zinc oxide 10mg of the invention-redox graphene composite material or zinc oxide in comparative example 11 simultaneously stir 30 in the dark
Minute obtains homogeneous dispersion；
2) dispersion in above-mentioned transparent glass test tube is placed in apart from 20 centimeters of ultraviolet source；
3) ultraviolet source is opened；
4) uv-vis spectra test is done with methyl orange solution of the ultraviolet-uisible spectrophotometer to first beginning and end illumination, and will
Peak strength is denoted as C at 660nm0；It will be made of the methyl orange dispersion centrifuging and taking supernatant after ultraviolet source illumination 50 minutes
Uv-vis spectra test, and peak strength at 660nm is denoted as C；
5) the disposal efficiency η=1-C/C0。
2.X- x ray diffraction spectrogram by obtaining as follows: using Shimadzu model XRD-6000 (CuK alpha irradiation,) diffractometer test sample between 5 ° -60 °.
3. ultrasonic instrument: the KQ3200E purchased from Kunshan Ultrasonic Instruments Co., Ltd..
4. being used to prepare zinc oxide-redox graphene composite material ultraviolet source equipment: 395nmLED lamp is purchased from
Zhuozhou blue sky Te Deng Development Co., Ltd.
5. raw materials used
1) it graphite: is purchased from Qingdao Hua Tai Graphite Company (325 mesh)
2) photoinitiator
Following photoinitiator is provided by Hubei Gu Run Science and Technology Co., Ltd.: bis- (the 2,4,6- trimethylbenzoyls of phenyl
Base) phosphine oxide, the fluoro- 3- pyrroles's phenyl titanocenes of double 2,6- bis-, 1- hydroxy-cyclohexyl-phenyl ketone；
Following photoinitiator is bought from Sigma-Aldrich (China): benzil, benzoin, α, α-diethoxybenzene second
The chloro- 4- propoxyl group thioxanthone of ketone, 4- methyl benzophenone, 1-.
The preparation of graphite oxide and graphene oxide
Graphite oxide and graphene oxide are prepared by Hummers method, and steps are as follows:
Graphite oxide piece is prepared by Hummers method: by 2g graphite powder and 1g NaNO3It is added to and fills 120mL
In the beaker of 98% concentrated sulfuric acid, the uniform stirring in 60 DEG C of water-baths.Then under stiring by 15g KMnO4Slowly it is added several times
In beaker, which is controlled temperature at 20 DEG C hereinafter, then removing ice-water bath is warming up to 35 DEG C of reaction 2h with ice-water bath.Slowly
150mL water dilution (this process is generated with a large amount of bubbles) is added and is controlled temperature at 50 DEG C hereinafter, then adding with ice-water bath
Enter the 30%H of 20mL2O2To remove remaining KMnO4, a large amount of bubble is produced at this time, and solution gradually becomes yellowish-brown.It will produce
Object is washed with the aqueous hydrochloric acid solution (15 weight %) of 1L 1:10 removes metal ion, then keeps supernatant molten with a large amount of distillation water washings
The pH of liquid is close to 7.Gained mixed liquor is subjected to centrifugal treating and dries centrifugal sediment in a vacuum drying oven at 60 DEG C
About 4h obtains brown color product.Gained graphite oxidation powder be averaged piece diameter be 21 microns, product amount 2.9g.By 0.5g stone
Then black oxide ultrasonic disperse 20 minutes in ethanol are dried in vacuo 3h at 60 DEG C and obtain graphene oxide.Gained oxidation
The X-ray diffraction spectrogram of graphene (GO) is shown in Fig. 1.
Embodiment 1:
Graphite oxide obtained by 4mg is dispersed in 10mL acetone, then to add double 2, the 6- bis- of 40mg photoinitiator fluoro-
3- pyrroles's phenyl titanocenes, 80mg zinc sulphide is as zinc source and 2mL ammonium hydroxide as weak base and by the ultrasonic (power of gained mixture
It 20W) is uniformly dispersed, obtains dispersion.
It transfers the dispersion in cuvette, is placed in be under dark surrounds apart from ultraviolet source 10cm and carries out spoke
According to irradiation time is that (energy density of irradiation is 100mW/cm to about 10min2, wherein energy density uses Beijing Normal University's light
The exposure meter of electric instrument plant measures), dispersion gradually precipitates.Dispersion containing precipitating is centrifuged, uses ethanol washing
It three times and is dried 5 hours in a vacuum drying oven at 65 DEG C and obtains final composite material.Gained zinc oxide-reduction-oxidation graphite
The disposal efficiency of the composite material of alkene is shown in Table 1.
Embodiment 2:
Embodiment 1 is repeated, but graphite oxide dispersion solvent is changed to ethyl alcohol；Photoinitiator is changed to benzil；By zinc
Source is changed to 460mg trbasic zinc phosphate；Weak base is changed to triethylamine.The disposal efficiency of gained composite material is shown in Table 1.
Embodiment 3:
Embodiment 1 is repeated, but graphite oxide dispersion solvent is changed to ethylene glycol；Photoinitiator is changed to 1- hydroxyl-ring
Hexyl-phenyl ketone；Zinc source is changed to 120mg zinc hydroxide；Weak base is changed to aniline.The disposal efficiency of gained composite material is shown in
Table 1.
Embodiment 4:
Embodiment 1 is repeated, but graphite oxide dispersion solvent is changed to ethyl alcohol；By photoinitiator be changed to phenyl it is bis- (2,4,
6- trimethylbenzoyl) phosphine oxide；Zinc source is changed to 110mg zinc acetate；Weak base is changed to triethylamine.The light of gained composite material
Degradation efficiency is shown in Table 1.
Embodiment 5:
Embodiment 1 is repeated, but graphite oxide dispersion solvent is changed to propylene glycol；Photoinitiator is changed to benzoin；It will
Zinc source is changed to 150mg zinc sulfate；Weak base is changed to ethamine.The disposal efficiency of gained composite material is shown in Table 1.
Embodiment 6:
Embodiment 1 is repeated, but graphite oxide dispersion solvent is changed to propylene glycol monomethyl ether；Photoinitiator is changed to α, α-
Diethoxy acetophenone；Zinc source is changed to 150mg zinc borate；Weak base is changed to diethanol amine.The light degradation of gained composite material is imitated
Rate is shown in Table 1.
Embodiment 7:
Embodiment 1 is repeated, but graphite oxide dispersion solvent is changed to ethyl alcohol；By photoinitiator be changed to phenyl it is bis- (2,4,
6- trimethylbenzoyl) phosphine oxide；Zinc source is changed to 20mg zinc powder；Weak base is changed to ethanol amine.
The X-ray diffraction spectrogram of gained zinc oxide-redox graphene composite material (ZnO/rGO) is shown in Fig. 1.By
Fig. 1 is it is found that graphene oxide (GO) has the characteristic peak positioned at 11.2 degree.In zinc oxide-redox graphene composite wood
In material, 11.2 degree of characteristic peak moves to about 23.6 degree and forms broad peak, this shows that graphene oxide is reduced.Also from zinc oxide-
On the X-ray diffraction spectrogram of the composite material of the former graphene oxide it can also be seen that peak of the hexagonal corresponding to zinc oxide,
But the characteristic peak without finding to correspond to graphite (about 26.3 degree) and graphene oxide.This shows that graphene oxide is reduced simultaneously
And redox graphene does not stack again.
The disposal efficiency of gained zinc oxide-redox graphene composite material is shown in Table 1.It tests and completes in light degradation
Later, dispersion is centrifuged, is washed with deionized three times, it is finally 10-20 minutes dry at 65 DEG C, it then carries out second
Light degradation test.Second of test handles composite material according to same method after completing and successively carries out third time and the 4th survey
Examination.The disposal efficiency is shown in Table 1, wherein second of photodegradative data is classified as " second of degradation of embodiment 7- ", third in table 1
Secondary photodegradative data are classified as " embodiment 7- third time is degraded " in table 1, the 4th photodegradative data are classified as in table 1
" embodiment 7- the 4th time degradation ".Zinc oxide of the invention-redox graphene composite material has from the data in the table
High degree of recycling.
Embodiment 8:
Embodiment 1 is repeated, but graphite oxide dispersion solvent is changed to cyclopentanone；Photoinitiator is changed to 4- methyldiphenyl
Ketone；Zinc source is changed to 70mg zinc sulphide；Weak base is changed to diphenylamines.The disposal efficiency of gained composite material is shown in Table 1.
Embodiment 9:
Embodiment 1 is repeated, but graphite oxide dispersion solvent is changed to tetrahydrofuran；Photoinitiator is changed to the chloro- 4- of 1-
Propoxyl group thioxanthone；Zinc source is changed to 120mg zinc carbonate；Weak base is changed to diethylamine.The disposal efficiency of gained composite material
It is shown in Table 1.
Embodiment 10:
Embodiment 4 is repeated, but zinc source amount is changed to 160mg；Light-initiated dosage is changed to 50mg.The light of gained composite material drops
Solution efficiency is shown in Table 1.
Comparative example 11:
Light degradation test is carried out to zinc oxide (being purchased from Shanghai Aladdin Industries, Inc, 30 ± 10nm of partial size),
The disposal efficiency is shown in Table 1.
Table 1
| Example No. | The disposal efficiency |
| 1 | 88% |
| 2 | 90% |
| 3 | 86% |
| 4 | 89% |
| 5 | 92% |
| 6 | 92% |
| 7 | 98% |
| 8 | 94% |
| 9 | 93% |
| 10 | 98% |
| Second of degradation of embodiment 7- | 97% |
| Embodiment 7- third time is degraded | 96% |
| Embodiment 7- the 4th time degradation | 95% |
| Comparative example 11 | 33% |
Claims (16)
1. a kind of method for preparing zinc oxide-redox graphene composite material comprising following steps:
1) offer includes the mixture of graphene oxide, at least one zinc source, at least one weak base and at least one photoinitiator；
With
2) mixture obtained with ultraviolet light by step 1) obtains zinc oxide-redox graphene composite material.
2. the method according to claim 1 for preparing zinc oxide-redox graphene composite material, wherein the oxidation stone
Black alkene is preferably prepared by Hummers method by Brodie method, Staudenmaier method or the preparation of Hummers method.
3. the method according to claim 1 or 2 for preparing zinc oxide-redox graphene composite material, wherein the oxygen
The average piece diameter of graphite alkene is 0.5-30 microns, preferably 1-15 microns.
4. the method as claimed in one of claims 1-3 for preparing zinc oxide-redox graphene composite material, wherein
The total weight of mixture based on step 1), graphene oxide is with 100-5000 weight ppm, preferably 200-2000 weight ppm, most
It is preferred that the amount of 250-1000 weight ppm exists.
5. the method as claimed in one of claims 1-4 for preparing zinc oxide-redox graphene composite material, wherein
The zinc source is selected from zinc hydroxide, simple substance zinc and zinc salt；The zinc salt is, for example, the strong acid salt or salt of weak acid of zinc, such as sulfuric acid
Salt, nitrate, phosphate, carbonate, C1-C6Carboxylate, halide, borate, sulfide, cyanide；It is preferred that zinc source is selected from sulphur
Change zinc, zinc chloride, zinc bromide, zinc cyanide, zinc chloride, zinc sulfate, zinc carbonate, trbasic zinc phosphate, zinc borate, zinc nitrate, biphosphate
Zinc, zinc acetate, zinc hydroxide and simple substance zinc.
6. the method as claimed in one of claims 1-5 for preparing zinc oxide-redox graphene composite material, wherein
The total weight of mixture based on step 1), zinc source is with 0.05-8 weight %, preferably 0.1-5 weight %, most preferably 0.2-2 weight
The amount for measuring % exists.
7. the method as claimed in one of claims 1-6 for preparing zinc oxide-redox graphene composite material, wherein
In the mixture of step 1), the weight ratio of zinc source and graphene oxide is 200:1-1:1, preferably 100:1-2:1, more preferably
60:1-3:1。
8. the method as claimed in one of claims 1-7 for preparing zinc oxide-redox graphene composite material, wherein
The weak base is selected from ammonium hydroxide, basic ammonium salts or organic base；Basic ammonium salts are, for example, ammonium carbonate or ammonium hydrogen carbonate；Organic bases are for example
Linearly, cyclic annular and/or branching C1-C8Mono-, two- and trialkylamine, linear or branching C1-C8Mono-, two- and three alkanols
Amine, linear or branching C1-C8Mono-, two- or trialkanolamine linear or branching C1-C8Alkyl ether, polyamines such as diethylidene three
Amine, mono- two-or triarylamine, preferably weak base is selected from ammonium hydroxide, methylamine, dimethylamine, trimethylamine, ethamine, diethylamine, triethylamine, second
Hydramine, diethanol amine, triethanolamine, aniline, diphenylamines and triphenylamine.
9. the method as claimed in one of claims 1-8 for preparing zinc oxide-redox graphene composite material, wherein
The total weight of mixture based on step 1), weak base is with 5-50 weight %, preferably 8-40 weight %, most preferably 12-25 weight %
Amount exist.
10. the method as claimed in one of claims 1-9 for preparing zinc oxide-redox graphene composite material,
Described in photoinitiator be the photoinitiator selected from following classification: mono- or bisacylphosphine oxides, benzophenone, alkyl phenones,
Phenylglyoxalates and its ester, benzoin, benzil, thioxanthone, anthraquinone and the luxuriant titanium of virtue or iron arene complexes, preferably phenyl it is bis- (2,
4,6- trimethylbenzoyl) phosphine oxide, the fluoro- 3- pyrroles's phenyl titanocenes of double 2,6- bis-, 1- (6- o-methyl-benzene formoxyl -9-
Ethyl -9H- carbazole -3- base)-acetophenone oxime-O- acetic acid esters, 2,4,6- trimethylbenzoy-dipheny phosphine oxide, 2,4,6- tri-
Methyl benzoyl phosphinic acid ethyl ester, 1- hydroxy-cyclohexyl-phenyl ketone, 2- hydroxy-2-methyl -1- phenylacetone, 2,4- diethyl
Base thioxanthone, 2- isopropyl thioxanthone, methyl benzoylformate, 2- benzyl -2- dimethylamino -1- (4- morpholinyl phenyl)
Butanone, benzophenone, benzil, benzoin, α, the chloro- 4- propoxyl group sulphur of α-diethoxy acetophenone, 4- methyl benzophenone, 1-
Miscellaneous anthrone, 2- ethyl hydrazine, 4,4 '-bis- (dimethylamino) benzophenone, 4,4 '-bis- (lignocaine) benzophenone and 2,4,6-
Tri-methyl benzophenone.
11. the method as claimed in one of claims 1-10 for preparing zinc oxide-redox graphene composite material,
In in the mixture of step 1), the weight ratio of photoinitiator and graphene oxide is 50:1-2:1, preferably 40:1-4:1, more excellent
Select 30:1-6:1.
12. any one of -11 method for preparing zinc oxide-redox graphene composite material according to claim 1,
Mixture in middle step 1) further includes at least one solvent, and the preferably described solvent is selected from C1-C6Alkanol has 2-6
The mono- or two-C of the glycol of carbon atom, glycol with 2-6 carbon atom1-C4Alkyl ether, the glycol with 2-6 carbon atom
Mono- C1-C4Alkyl ether C1-C4Carboxylate, ketone (such as acetone, cyclopentanone, cyclohexanone), diformazan with 3-7 carbon atom
Sulfoxide, n,N-Dimethylformamide, gamma-butyrolacton, tetrahydrofuran, N-Methyl pyrrolidone and diacetone alcohol, more preferable ethyl alcohol,
Ethylene glycol, the ketone with 3-7 carbon atom, propylene glycol, propylene glycol monomethyl ether, propylene glycol methyl ether acetate, dimethyl sulfoxide,
Gamma-butyrolacton, tetrahydrofuran, N-Methyl pyrrolidone and diacetone alcohol.
13. the method according to claim 12 for preparing zinc oxide-redox graphene composite material, wherein step 1)
Mixture is by the way that graphite oxide, at least one zinc source, at least one weak base and at least one photoinitiator to be dispersed at least
In a kind of solvent and prepare.
14. any one of -13 method for preparing zinc oxide-redox graphene composite material according to claim 1,
The energy density irradiated in middle step 2) is 20-1000mW/cm2, preferably 50-500mW/cm2。
15. one kind can be by zinc oxide-redox graphene composite wood that the method for any one of claim 1-14 obtains
Material.
16. zinc oxide-redox graphene composite material of claim 15 degradable organic pollutant, purification air,
Handle the purposes in industrial waste gas and degradative plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711364544.6A CN109926039B (en) | 2017-12-18 | 2017-12-18 | Method for preparing zinc oxide-reduced graphene oxide composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711364544.6A CN109926039B (en) | 2017-12-18 | 2017-12-18 | Method for preparing zinc oxide-reduced graphene oxide composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109926039A true CN109926039A (en) | 2019-06-25 |
| CN109926039B CN109926039B (en) | 2020-01-10 |
Family
ID=66982593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711364544.6A Active CN109926039B (en) | 2017-12-18 | 2017-12-18 | Method for preparing zinc oxide-reduced graphene oxide composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109926039B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101302264A (en) * | 2007-05-11 | 2008-11-12 | 北京化工大学 | Polymer emulsion having unsaturated double bond and preparation thereof |
| CN103409057A (en) * | 2013-08-05 | 2013-11-27 | 江苏大学 | Preparation method for anti-electromagnetic shielding coating based on ultraviolet curing of graphene oxide |
| CN103788342A (en) * | 2013-12-24 | 2014-05-14 | 江苏广信感光新材料股份有限公司 | Ultraviolet-thermal dual-cured resin, anti-welding ink containing resin, and application of resin |
| CN104475076A (en) * | 2014-12-11 | 2015-04-01 | 上海烟草集团有限责任公司 | Preparation method of graphene-nano zinc oxide composite photocatalytical material for adsorbing and degrading nitrosamine |
| CN104549281A (en) * | 2015-02-04 | 2015-04-29 | 中国科学技术大学 | Active graphene-metal oxide composite photocatalyst and preparation method and application thereof |
| CN104861643A (en) * | 2015-05-29 | 2015-08-26 | 安徽大学 | Preparing method of graphene/waterborne polyurethane composite material |
| CN104910333A (en) * | 2015-06-24 | 2015-09-16 | 深圳职业技术学院 | Modified graphene oxide polymer composite material and preparation method thereof |
| CN105214635A (en) * | 2015-10-26 | 2016-01-06 | 上海理工大学 | A kind of composite photo-catalyst and its preparation method and application |
| CN107367905A (en) * | 2017-07-14 | 2017-11-21 | 北京师范大学 | The method for preparing the compound system of the photoresist grapheme material of high-specific surface area |
| CN107446577A (en) * | 2017-07-20 | 2017-12-08 | 北京师范大学 | The method for preparing the illuminating complex system of photoresist graphene quantum dot |
-
2017
- 2017-12-18 CN CN201711364544.6A patent/CN109926039B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101302264A (en) * | 2007-05-11 | 2008-11-12 | 北京化工大学 | Polymer emulsion having unsaturated double bond and preparation thereof |
| CN103409057A (en) * | 2013-08-05 | 2013-11-27 | 江苏大学 | Preparation method for anti-electromagnetic shielding coating based on ultraviolet curing of graphene oxide |
| CN103788342A (en) * | 2013-12-24 | 2014-05-14 | 江苏广信感光新材料股份有限公司 | Ultraviolet-thermal dual-cured resin, anti-welding ink containing resin, and application of resin |
| CN104475076A (en) * | 2014-12-11 | 2015-04-01 | 上海烟草集团有限责任公司 | Preparation method of graphene-nano zinc oxide composite photocatalytical material for adsorbing and degrading nitrosamine |
| CN104549281A (en) * | 2015-02-04 | 2015-04-29 | 中国科学技术大学 | Active graphene-metal oxide composite photocatalyst and preparation method and application thereof |
| CN104861643A (en) * | 2015-05-29 | 2015-08-26 | 安徽大学 | Preparing method of graphene/waterborne polyurethane composite material |
| CN104910333A (en) * | 2015-06-24 | 2015-09-16 | 深圳职业技术学院 | Modified graphene oxide polymer composite material and preparation method thereof |
| CN105214635A (en) * | 2015-10-26 | 2016-01-06 | 上海理工大学 | A kind of composite photo-catalyst and its preparation method and application |
| CN107367905A (en) * | 2017-07-14 | 2017-11-21 | 北京师范大学 | The method for preparing the compound system of the photoresist grapheme material of high-specific surface area |
| CN107446577A (en) * | 2017-07-20 | 2017-12-08 | 北京师范大学 | The method for preparing the illuminating complex system of photoresist graphene quantum dot |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109926039B (en) | 2020-01-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Gong et al. | Determination and toxicity evaluation of the generated products in sulfamethoxazole degradation by UV/CoFe2O4/TiO2 | |
| Dong et al. | Designing three-dimensional acicular sheaf shaped BiVO4/reduced graphene oxide composites for efficient sunlight-driven photocatalytic degradation of dye wastewater | |
| Acuña-Bedoya et al. | Boosting visible-light photocatalytic degradation of polystyrene nanoplastics with immobilized CuxO obtained by anodization | |
| Gaidi et al. | Enhanced photocatalytic activities of silicon nanowires/graphene oxide nanocomposite: Effect of etching parameters | |
| Marcelino et al. | Novel and versatile TiO2 thin films on PET for photocatalytic removal of contaminants of emerging concern from water | |
| Lu et al. | Facile hydrothermal synthesis of carbon dots (CDs) doped ZnFe2O4/TiO2 hybrid materials with high photocatalytic activity | |
| Portjanskaja et al. | The influence of titanium dioxide modifications on photocatalytic oxidation of lignin and humic acids | |
| TW201734175A (en) | Reaction system and using method thereof | |
| Yan et al. | Kinetics and mechanism of enhanced photocatalytic activity employing ZnS nanospheres/graphene-like C3N4 | |
| CN111420690A (en) | Preparation of ZnO-g-C3N4 photocatalyst and application thereof in water ibuprofen degradation drugs | |
| Kedruk et al. | Facile low-cost synthesis of highly photocatalitycally active zinc oxide powders | |
| CN107774283A (en) | A kind of molybdenum disulfide hybrid hydrotalcite composite material and its preparation method and application | |
| CN109231183B (en) | Carbon quantum dot with citric acid as carbon source and preparation method and application thereof | |
| KR20160011725A (en) | THE MANUFACTURING METHOD OF TiO2/GRAPHENE COMPOSITE FOR PHOTOCATALYST | |
| Zheng et al. | Synthesis of Fe—Fe3O4/rGO Composite with Heterostructure Through Room-Temperature Reduction as Photo-Fenton Catalyst | |
| CN109926039A (en) | The method for preparing zinc oxide-redox graphene composite material | |
| CN111939944B (en) | Preparation and application of cadmium selenide quantum dot/molybdenum disulfide composite photocatalyst | |
| Guozheng et al. | Effects of light intensity and H2O2 on photocatalytic degradation of phenol in wastewater using TiO2/ACF | |
| Ridwan et al. | Hydrothermal grow of Cu doped ZnO nanorods for large spectrum photocatalyst | |
| Todorenko et al. | The effect of carbon nanodots and graphene quantum dots on the green microalga Scenedesmus quadricauda | |
| Zuo et al. | Synthesis of ultrathin-layered MoS2/conductive mica composites with enhanced visible photocatalytic activity | |
| Borzyszkowska et al. | ZnO-decorated green-synthesized multi-doped carbon dots from Chlorella pyrenoidosa for sustainable photocatalytic carbamazepine degradation | |
| CN109133452A (en) | A kind of magnalium hydrotalcite load TiO2The method of photocatalysis adsorbent material processing tetracycline antibiotics waste water | |
| Fan et al. | Graphene-supported CoPc/TiO2 synthesized by sol-gel–hydrothermal method with enhanced photocatalytic activity for degradation of the typical gas of landfill exhaust | |
| CN107096547A (en) | The synthetic method of serial type structure ZnS@CdS Te photochemical catalysts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |