CN106391025A - Foam metal loaded grapheme-TiO2-SiO2 photocatalysis composite material and preparation method - Google Patents
Foam metal loaded grapheme-TiO2-SiO2 photocatalysis composite material and preparation method Download PDFInfo
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- 239000006260 foam Substances 0.000 title claims abstract description 69
- 239000002184 metal Substances 0.000 title claims abstract description 64
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 64
- 239000002131 composite material Substances 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title claims abstract description 29
- 229910003082 TiO2-SiO2 Inorganic materials 0.000 title claims abstract description 19
- 230000001699 photocatalysis Effects 0.000 title abstract description 11
- 238000007146 photocatalysis Methods 0.000 title abstract description 10
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 64
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 38
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 35
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 35
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 35
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 35
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 35
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 49
- 230000003197 catalytic effect Effects 0.000 claims description 42
- 229910021389 graphene Inorganic materials 0.000 claims description 40
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 33
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 32
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 24
- 239000000758 substrate Substances 0.000 claims description 24
- 239000006185 dispersion Substances 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 15
- 229910052759 nickel Inorganic materials 0.000 claims description 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 10
- 239000008367 deionised water Substances 0.000 claims description 7
- 229910021641 deionized water Inorganic materials 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000013078 crystal Substances 0.000 claims description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 5
- 239000002105 nanoparticle Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- 238000001802 infusion Methods 0.000 claims description 4
- 150000001336 alkenes Chemical class 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 238000005470 impregnation Methods 0.000 claims description 3
- 230000009514 concussion Effects 0.000 claims description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- 238000007598 dipping method Methods 0.000 claims 1
- 239000012876 carrier material Substances 0.000 abstract description 2
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 2
- 238000007254 oxidation reaction Methods 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- 230000003647 oxidation Effects 0.000 description 7
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000011941 photocatalyst Substances 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000006460 hydrolysis reaction Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 230000007062 hydrolysis Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 206010068150 Acoustic shock Diseases 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000004224 protection Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 239000007809 chemical reaction catalyst Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000005543 nano-size silicon particle Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/755—Nickel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
- C02F2101/322—Volatile compounds, e.g. benzene
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
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Abstract
The invention belongs to the technical field of a photocatalysis composite material, and particularly relates to a foam metal loaded grapheme-TiO2-SiO2 photocatalysis composite material and a preparation method. The foam metal loaded grapheme-TiO2-SiO2 photocatalysis composite material prepared by the invention fully uses the advantages of grapheme, TiO2, SiO2 and a foam metal base, and effectively combines every component. The photocatalysis composite material applies the foam metal as a carrier material, and has the advantages of being high mechanical strength, strong photocorrosion resistance, and good wear resistance; besides, the preparation method is simple and easy to popularize.
Description
Technical field
The invention belongs to optic catalytic composite material technical field is and in particular to a kind of foam metal loads Graphene-TiO2-
SiO2Optic catalytic composite material and preparation method.
Background technology
TiO2There is good energy gap, very strong oxidability, meanwhile, TiO can be produced through exciting2There is price phase
To cheap, chemical stability is good, nontoxic, non-secondary pollution the features such as.Therefore, TiO2It is a kind of most commonly used light of range of application
Chemical reaction catalyst.TiO2Photocatalysis, in the application of field of Environment Protection, mainly adopt carrier surface to adhere to TiO2Mode, to carry
For larger specific surface area, play good dynamic conditions.Foam metal with nickel foam as representative has larger ratio table
The features such as face, preferable mechanical strength, good chemical stability and light stability.Therefore in photocatalytic environmental-protection field, foam
Metal especially nickel foam is widely used carrier of photocatalyst.
Photocatalysis oxidation technique is widely used in field of Environment Protections such as exhaust-gas treatments.Because photocatalysis oxidation reaction is processed
Exhaust gas concentration is often relatively low, large-minded, and waste gas is short for action time through photocatalytic oxidation device, is difficult to dirty in effective degraded waste gas
Dye component.Graphene is the widely used advanced material of Recent study, has that absorption property is strong, chemical stability and light are stable
The features such as property is good, high mechanical strength, electron transport conducting power are good, light transmission is good.Therefore, how effective and easy graphite
It is the focus of current research that alkene is applied in photochemical catalytic oxidation.Adhesion effect on carrier for the photochemical catalytic oxidation material directly affects
The service life of catalysis material, a kind of firm, bonding agent of high mechanical properties and corresponding adherence method are equally photocatalysis
The emphasis of Material Field research.
Content of the invention
The problem existing for prior art, the present invention provides a kind of foam metal to load Graphene-TiO2-SiO2Light is urged
Change composite and preparation method it is therefore an objective to improve the absorbability of optic catalytic composite material using Graphene, improve photoproduction electricity
Son, in the conduction velocity of catalyst surface, reduces TiO2Photocatalyst produced hole and photoproduction electricity in ultraviolet irradiation process
Compound, the raising TiO of son2The efficiency of photocatalyst, using the nano silicon dioxide sol generating after tetraethyl orthosilicate hydrolysis, makes
Graphene and TiO2It is firmly attached to foam metal carrier surface, and is effectively isolated light induced electron and be transferred to foam metal, preparation
A kind of high adsorption, high catalytic activity, high attachment degree, the optic catalytic composite material of high mechanical properties.
The foam metal load Graphene-TiO of the present invention2-SiO2Optic catalytic composite material, Graphene in material microcosmic phase,
TiO2And SiO2It is uniformly adhered in foam metal substrate framework, wherein TiO2Nano-particle is uniformly strapped in Graphene skeleton
Upper formation Graphene-TiO2Complex, TiO2For complete anatase crystal.
The foam metal load Graphene-TiO of the present invention2-SiO2The preparation method of optic catalytic composite material, according to following
Step is carried out：
(1) adopt ultrasonic vibration by graphene oxide powder and TiO2Powder is dispersed into graphite oxide in ethanol solution
Alkene-TiO2Dispersion liquid, tetraethyl orthosilicate is added drop-wise to graphene oxide-TiO2In dispersion liquid, it is hydrolyzed in acid condition anti-
Should, during continual ultrasonic concussion, stable graphene oxide-TiO is obtained2-SiO2Colloidal sol；
(2) in ethanol solution and deionized water, successively it is cleaned by ultrasonic foam metal substrate, the clean foam metal base of preparation
Plate, the graphene oxide-TiO that will be prepared in step (1) using infusion process2-SiO2Colloidal sol is attached on foam metal substrate, warp
After ultraviolet light, prepared foam metal loads Graphene-TiO2-SiO2Optic catalytic composite material.
Wherein, in described step (1) volumes of aqueous ethanol concentration be 20～30%, the ultrasonic vibration time be 30～
60min.
Described acid condition is to add hydrochloric acid to adjust pH value for 2～3, and continual ultrasonic shakes 10～20min.
In described step (2), volumes of aqueous ethanol concentration is 90%, is cleaned by ultrasonic 30min, drains in ethanol solution
It is cleaned by ultrasonic 30min afterwards in deionized water, be dried under the conditions of so.
Described infusion process is to put into foam metal substrate obtained by step (2) in step (1) gained colloidal sol, impregnates 2
It is slowly withdrawn after～4min, in 60～100 DEG C of baking ovens, dries 30～60min, repeated impregnations are dried 2～4 times.
Described ultraviolet light is UV-B area, and irradiation time is 10-30min.
Described graphene oxide-TiO2-SiO2In colloidal sol, the mass concentration of each component is respectively：Graphene oxide 1～
3mg/mL, TiO2Mass concentration is 5～15mg/mL；Described is added drop-wise to graphene oxide-TiO2Silicic acid tetrem in dispersion liquid
Ester mass concentration is 0.4～1.2mg/mL.
Described foam metal substrate preferred foams nickel.
Compared with prior art, the feature of the present invention and beneficial effect are：
Foam metal load Graphene-TiO prepared by the present invention2-SiO2Optic catalytic composite material make full use of Graphene,
TiO2、SiO2And the feature of each component material of foam metal substrate, and each group dtex point is effectively combined.The photocatalysis of the present invention
TiO in composite2It is efficient, stable photocatalyst, there is cheap and easy to get, easy excitated, light stability and chemical stability
Good, the advantage of non-secondary pollution；Graphene in composite can be substantially improved the absorbability of optic catalytic composite material, fill
Divide and absorb pollution components thus extending the Oxidation time, meanwhile, Graphene can improve catalyst light induced electron in catalyst
The conduction velocity on surface, reduces TiO2Photocatalyst in ultraviolet irradiation process produced hole and light induced electron compound,
Improve TiO2The service efficiency of photocatalyst；The Nano-meter SiO_2 generating after tetraethyl orthosilicate hydrolysis2Colloidal sol is a kind of high performance viscous
Mixture, can make Graphene and TiO2It is firmly attached to foam metal carrier surface, and is effectively isolated light induced electron and be transferred to bubble
Foam metal；Adopt foam metal as carrier material, high mechanical strength in composite, fast light corrosive power is strong, mar proof
Good.
The inventive method is by colloidal sol preparation and impregnation drying and ultra-vioket radiation by TiO2, Graphene, SiO2Each component is effective
It is attached to foam metal surface, method is simple, feasibility is high.
Brief description
Fig. 1 is the foam metal load Graphene-TiO of the embodiment of the present invention 1 preparation2-SiO2Stone in optic catalytic composite material
Black alkene-TiO2The transmission electron microscope photo of compound phase；
Wherein：Graphene is Graphene phase；
Fig. 2 is the foam metal of the embodiment of the present invention 1 in load Graphene-TiO2-SiO2Before and after optic catalytic composite material
Surface scan Electronic Speculum contrasts photo；
Wherein：A, a '：Foam metal；b,b’：Foam metal loads Graphene-TiO2-SiO2；
Fig. 3 is the foam metal load Graphene-TiO of the embodiment of the present invention 1 preparation2-SiO2Optic catalytic composite material is negative
Carry Graphene-TiO2-SiO2XRD spectrum in front and back；
Wherein：After coating：After load；Before coating：Before load；
Fig. 4 is the foam metal load Graphene-TiO of the embodiment of the present invention 2 preparation2-SiO2Optic catalytic composite material section
Carry out the scanning electron microscope (SEM) photograph before and after fastness test experiments；
Wherein：A, a '：Gases at high pressure before processing；b,b’：Gases at high pressure process 20 points of kinds；c,c’：Gases at high pressure process 40
Minute；TiO2/Graphene coating：Graphene-the TiO of load2；Metal Ni：Metallic nickel；Carbon：Filling carbon-coating；
Fig. 5 is the foam metal load Graphene-TiO of the embodiment of the present invention 3 preparation2-SiO2Optic catalytic composite material with
General T iO2The degradation curve contrast of catalytic plate ultraviolet catalytic oxidation toluene.
Specific embodiment
In order that technical scheme, purpose more clearly illustrate, below in conjunction with drawings and Examples, to this
Bright further description.Embodiment described herein is only used for explaining the present invention, not delimit the scope of the invention.
Experimental technique described in following examples, if no special instructions, is conventional method；Described material and reagent, such as
No specified otherwise, all commercially obtains.
Embodiment 1
The foam metal load Graphene-TiO of the present embodiment2-SiO2The preparation method of optic catalytic composite material, according to
Lower step is carried out：
(1) by 200mg graphene oxide powder and 1000mgTiO2Powder is super in 100mL 20% concentration ethanol solution
Acoustic shock is swung 45min and is dispersed into graphene oxide-TiO2Dispersion liquid, 80mg tetraethyl orthosilicate is added drop-wise to graphene oxide-TiO2Point
In dispersion liquid, be slowly added to hydrochloric acid adjust PH to 3, continual ultrasonic shake 15min, tetraethyl orthosilicate hydrolysis and with graphene oxide-
TiO2Dispersion liquid dissolves each other, and ultimately forms graphene oxide-TiO2-SiO2Colloidal sol；
(2) foamed nickel substrate is placed in ultrasonic 30min in 90% ethanol solution, puts into ultrasonic in deionized water after draining
30min, places and preparation clean foam metal substrate, the foamed nickel substrate of clip 2cm × 2cm size is dried, put into step (2)
In prepared mixed sols, impregnate 3min, take out, put into drying 45min in 80 DEG C of baking ovens, repeat above procedure 3 times, and handle
Resulting materials are placed in irradiation 30min under ultraviolet light, and prepared foam metal loads Graphene-TiO2-SiO2Optic catalytic composite material.
Graphene-TiO prepared by the present embodiment2Transmission electron microscope as shown in figure 1, TiO2It is combined together with Graphene,
TiO2Comparatively dense be distributed in graphenic surface, form Graphene-TiO2Complex.
The foam metal Ni Graphene-TiO that embodiment is obtained2-SiO2The SEM scanning electron microscope of optic catalytic composite material
Photo is as shown in Fig. 2 Graphene, TiO2And SiO2It is uniformly adhered on foamed nickel substrate skeleton, TiO2Nano-particle homogeneous beam
It is tied on Graphene skeleton, its XRD diffracting spectrum is as shown in figure 3, TiO2For complete anatase crystal.
To the foamed nickel supported Graphene-TiO prepared by embodiment2-SiO2The fastness of optic catalytic composite material is surveyed
Examination, optic catalytic composite material is placed under pressure-air, and gas flow rate is 15m/s, and scanning electron microscopic observation is at gases at high pressure
The thickness change of (a, a ') and the coating after processing 20 points of kinds (b, b ') and 40 minutes (c, c ') before reason, as shown in figure 4, wherein deep
Zone domain material is the carbon dust fused mass filled in cutting bruting process, figure 4, it is seen that coating layer thickness is before treatment
Do not occur afterwards significantly to change, this explanation Graphene, TiO2And SiO2It is firmly combined with foam nickel skeleton.
The foam metal load Graphene-TiO of the present embodiment2--SiO2Optic catalytic composite material and general T iO2Catalytic plate
The degradation curve contrast of ultraviolet catalytic oxidation toluene is as shown in figure 5, from fig. 5, it can be seen that the one kind prepared by the present invention is steeped
Foam metal load Graphene TiO2--SiO2Optic catalytic composite material and common foamed nickel supported TiO2Catalysis material is compared, and has
The contaminant degradation efficiency of higher absorption property and Geng Gao and speed.
Embodiment 2
The foam metal load Graphene-TiO of the present embodiment2-SiO2The preparation method of optic catalytic composite material, according to
Lower step is carried out：
(1) by 100mg graphene oxide powder and 500mg TiO2Powder is super in 100mL 30% concentration ethanol solution
Acoustic shock is swung 30min and is dispersed into Graphene-TiO2Dispersion liquid, 40mg tetraethyl orthosilicate is added drop-wise to Graphene-TiO2In dispersion liquid,
Be slowly added to hydrochloric acid adjust PH to 3, continual ultrasonic shake 10min, tetraethyl orthosilicate hydrolysis and with graphene oxide-TiO2Dispersion liquid
Dissolve each other, ultimately form graphene oxide-TiO2-SiO2Colloidal sol；
(2) foamed nickel substrate is placed in ultrasonic 30min in 90% ethanol solution, puts into ultrasonic in deionized water after draining
30min, places and preparation clean foam metal substrate, the foamed nickel substrate of clip 2cm × 2cm size is dried, put into step (2)
In prepared mixed sols, impregnate 3min, take out, put into drying 30min in 80 DEG C of baking ovens, repeat above procedure 4 times, and handle
Resulting materials are placed in irradiation 10min under ultraviolet light, and prepared foam metal loads Graphene-TiO2-SiO2Optic catalytic composite material,
Graphene, TiO in material microcosmic phase2And SiO2It is uniformly adhered in foam metal substrate framework, wherein TiO2Nano-particle is equal
Even being strapped on Graphene skeleton forms Graphene-TiO2Complex, TiO2For complete anatase crystal.
Embodiment 3
The foam metal load Graphene-TiO of the present embodiment2-SiO2The preparation method of optic catalytic composite material, according to
Lower step is carried out：
(1) by 150mg graphene oxide powder and 1500mg TiO2Powder is super in 100mL 30% concentration ethanol solution
Acoustic shock is swung 60min and is dispersed into Graphene-TiO2Dispersion liquid, 120mg tetraethyl orthosilicate is added drop-wise to graphene oxide-TiO2Dispersion
In liquid, be slowly added to hydrochloric acid adjust PH to 3, continual ultrasonic shake 20min, tetraethyl orthosilicate hydrolysis and with graphene oxide-TiO2
Dispersion liquid dissolves each other, and ultimately forms graphene oxide-TiO2-SiO2Colloidal sol；
(2) foamed nickel substrate is placed in ultrasonic 30min in 90% ethanol solution, puts into ultrasonic in deionized water after draining
30min, places and preparation clean foam metal substrate, the foamed nickel substrate of clip 2cm × 2cm size is dried, put into step (2)
In prepared mixed sols, impregnate 2min, take out, put into drying 30min in 80 DEG C of baking ovens, repeat above procedure 2 times, and handle
Resulting materials are placed in irradiation 20min under ultraviolet light, and prepared foam metal loads Graphene-TiO2-SiO2Optic catalytic composite material,
Graphene, TiO in material microcosmic phase2And SiO2It is uniformly adhered in foam metal substrate framework, wherein TiO2Nano-particle is equal
Even being strapped on Graphene skeleton forms Graphene-TiO2Complex, TiO2For complete anatase crystal.
Claims (9)
1. a kind of foam metal loads Graphene-TiO2-SiO2Optic catalytic composite material it is characterised in that：Stone in material microcosmic phase
Black alkene, TiO2And SiO2It is uniformly adhered in foam metal substrate framework, wherein TiO2Nano-particle is uniformly strapped in Graphene
Graphene-TiO is formed on skeleton2Complex, TiO2For complete anatase crystal.
2. a kind of foam metal loads Graphene-TiO as claimed in claim 12-SiO2The preparation side of optic catalytic composite material
Method is it is characterised in that follow the steps below：
(1) adopt ultrasonic vibration by graphene oxide powder and TiO2Powder is dispersed into graphene oxide-TiO in ethanol solution2
Dispersion liquid, tetraethyl orthosilicate is added drop-wise to graphene oxide-TiO2In dispersion liquid, be hydrolyzed reaction in acid condition, mistake
Continual ultrasonic concussion in journey, is obtained stable graphene oxide-TiO2-SiO2Colloidal sol；
(2) in ethanol solution and deionized water, successively it is cleaned by ultrasonic foam metal substrate, the clean foam metal substrate of preparation, adopt
Graphene oxide-the TiO that will be prepared in step (1) with infusion process2-SiO2Colloidal sol is attached on foam metal substrate, through ultraviolet light
After irradiation, prepared foam metal loads Graphene-TiO2-SiO2Optic catalytic composite material.
3. a kind of foam metal loads Graphene-TiO as claimed in claim 12-SiO2The preparation side of optic catalytic composite material
Method it is characterised in that：In described step (1) volumes of aqueous ethanol concentration be 20～30%, the ultrasonic vibration time be 30～
60min.
4. a kind of foam metal loads Graphene-TiO as claimed in claim 12-SiO2The preparation side of optic catalytic composite material
Method it is characterised in that：Described acid condition is to add hydrochloric acid to adjust pH value for 2～3, and continual ultrasonic shakes 10～20min.
5. a kind of foam metal loads Graphene-TiO as claimed in claim 12-SiO2The preparation side of optic catalytic composite material
Method it is characterised in that：In described step (2), volumes of aqueous ethanol concentration is 90%, is cleaned by ultrasonic in ethanol solution
30min, is cleaned by ultrasonic 30min in deionized water after draining, be dried under the conditions of so.
6. a kind of foam metal loads Graphene-TiO as claimed in claim 12-SiO2The preparation side of optic catalytic composite material
Method it is characterised in that：Described infusion process is to put in step (1) gained colloidal sol by foam metal substrate obtained by step (2),
It is slowly withdrawn after dipping 2～4min, in 60～100 DEG C of baking ovens, dries 30～60min, repeated impregnations are dried 2～4 times.
7. a kind of foam metal loads Graphene-TiO as claimed in claim 12-SiO2The preparation side of optic catalytic composite material
Method it is characterised in that：Described ultraviolet light is UV-B area, and irradiation time is 10-30min.
8. a kind of foam metal loads Graphene-TiO as claimed in claim 12-SiO2The preparation side of optic catalytic composite material
Method it is characterised in that：Described graphene oxide-TiO2-SiO2In colloidal sol, the mass concentration of each component is respectively：Graphite oxide
Alkene 1～3mg/mL, TiO2Mass concentration is 5～15mg/mL；Described is added drop-wise to graphene oxide-TiO2Silicic acid in dispersion liquid
Tetra-ethyl ester mass concentration is 0.4～1.2mg/mL.
9. a kind of foam metal loads Graphene-TiO as claimed in claim 12-SiO2The preparation side of optic catalytic composite material
Method it is characterised in that：Described foam metal substrate preferred foams nickel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610847449.0A CN106391025A (en) | 2016-09-25 | 2016-09-25 | Foam metal loaded grapheme-TiO2-SiO2 photocatalysis composite material and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610847449.0A CN106391025A (en) | 2016-09-25 | 2016-09-25 | Foam metal loaded grapheme-TiO2-SiO2 photocatalysis composite material and preparation method |
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| CN107308992A (en) * | 2017-08-23 | 2017-11-03 | 浙江理工大学 | A kind of photocatalytic fiber net and its preparation method and application |
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| CN107434434A (en) * | 2017-08-23 | 2017-12-05 | 浙江理工大学 | A kind of photocatalysis stone material and its preparation method and application |
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| CN107537315A (en) * | 2017-08-23 | 2018-01-05 | 浙江理工大学 | A kind of photocatalysis simulative grass and its preparation method and application |
| CN107344749A (en) * | 2017-08-23 | 2017-11-14 | 浙江理工大学 | A kind of photocatalysis landscape tree and its preparation method and application |
| CN107353680A (en) * | 2017-08-23 | 2017-11-17 | 浙江理工大学 | A kind of light catalyzed coating and its preparation method and application |
| CN107376885A (en) * | 2017-08-23 | 2017-11-24 | 浙江理工大学 | A kind of photocatalysis artificial flowers and its preparation method and application |
| CN107434434A (en) * | 2017-08-23 | 2017-12-05 | 浙江理工大学 | A kind of photocatalysis stone material and its preparation method and application |
| CN107469866A (en) * | 2017-08-23 | 2017-12-15 | 浙江理工大学 | A kind of 3 D stereo photocatalysis compound system and its preparation method and application |
| CN107308992A (en) * | 2017-08-23 | 2017-11-03 | 浙江理工大学 | A kind of photocatalytic fiber net and its preparation method and application |
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| CN107308992B (en) * | 2017-08-23 | 2022-06-03 | 浙江理工大学 | Photocatalytic fiber net and preparation method and application thereof |
| CN108582353A (en) * | 2018-04-28 | 2018-09-28 | 北京林业大学 | A kind of wood base composite material of releasing negative oxygen ion and preparation method thereof |
| CN111895430A (en) * | 2020-08-07 | 2020-11-06 | 浙江工业大学 | Catalytic combustion device and method based on electromagnetic induction heating of foam metal catalyst |
| US20220096703A1 (en) * | 2020-09-27 | 2022-03-31 | Trane Air Conditioning Systems (China) Co., Ltd. | Photocatalytic oxidation centrifugal fan |
| US11779677B2 (en) * | 2020-09-27 | 2023-10-10 | Trane Air Conditioning Systems (China) Co., Ltd. | Photocatalytic oxidation centrifugal fan |
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