CN107362788A - A kind of graphene oxide/titanium dioxide activated carbon three-dimensional composite material and preparation method thereof - Google Patents
A kind of graphene oxide/titanium dioxide activated carbon three-dimensional composite material and preparation method thereof Download PDFInfo
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- CN107362788A CN107362788A CN201710470915.2A CN201710470915A CN107362788A CN 107362788 A CN107362788 A CN 107362788A CN 201710470915 A CN201710470915 A CN 201710470915A CN 107362788 A CN107362788 A CN 107362788A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 172
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 140
- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 73
- 239000000463 material Substances 0.000 title claims abstract description 62
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 52
- 239000011165 3D composite Substances 0.000 title claims abstract description 37
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000002131 composite material Substances 0.000 claims abstract description 28
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 16
- 239000000835 fiber Substances 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 16
- 239000000725 suspension Substances 0.000 claims description 12
- 239000006185 dispersion Substances 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 11
- 238000007146 photocatalysis Methods 0.000 claims description 10
- 230000001699 photocatalysis Effects 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 239000013078 crystal Substances 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 239000012046 mixed solvent Substances 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims 1
- 239000002904 solvent Substances 0.000 claims 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract description 56
- 229930040373 Paraformaldehyde Natural products 0.000 abstract description 8
- 229920002866 paraformaldehyde Polymers 0.000 abstract description 8
- 238000013033 photocatalytic degradation reaction Methods 0.000 abstract description 7
- 238000010521 absorption reaction Methods 0.000 abstract description 6
- 230000015556 catabolic process Effects 0.000 abstract description 5
- 238000006731 degradation reaction Methods 0.000 abstract description 5
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 abstract description 5
- 238000004887 air purification Methods 0.000 abstract description 2
- 238000003795 desorption Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000000505 pernicious effect Effects 0.000 description 5
- 239000003575 carbonaceous material Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000002341 toxic gas Substances 0.000 description 4
- 238000002604 ultrasonography Methods 0.000 description 4
- 238000006555 catalytic reaction Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 239000007767 bonding agent Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- -1 graphite alkene Chemical class 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000005297 material degradation process Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/18—Carbon
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8668—Removing organic compounds not provided for in B01D53/8603 - B01D53/8665
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- B01J35/00—Catalysts, in general, characterised by their form or physical properties
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- B01J35/39—Photocatalytic properties
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Abstract
The invention belongs to technical field of air purification, and in particular to a kind of graphene oxide/titanium dioxide activated carbon three-dimensional composite material and preparation method thereof.The three-dimensional composite material is attached to active carbon filter screen or carbon fibre web surface obtains by graphene oxide/composite titania material is directly intensive.Graphene oxide provided by the present invention/titanium dioxide activated carbon three-dimensional composite material PARA FORMALDEHYDE PRILLS(91,95) has excellent absorption property and Photocatalytic Degradation Property, the actual removal that photocatalytic degradation realizes formaldehyde is carried out to it after formaldehyde absorbing, secondary pollution caused by preventing the desorption of formaldehyde, after being handled by the absorption degradation of the composite, to low concentration formaldehyde (the concentration 1.0mg/m in household in 10h3) clearance is up to 82.5 95.6%.
Description
Technical field
The invention belongs to technical field of air purification, and in particular to a kind of graphene oxide/titanium dioxide-activated carbon is three-dimensional
Composite and preparation method thereof.
Background technology
With the development of society, people also increasingly increase for the quality requirement of living environment, how sky is effectively removed
Pernicious gas in gas, especially formaldehyde, become the focus of research.Currently used formaldehyde minimizing technology is to use activated carbon
Adsorbed Deng porous carbon materials, this method there is can not thoroughly remove formaldehyde, place to inactivate after adsorption saturation, with
And absorbent charcoal material surface concentration of formaldehyde height causes desorption release formaldehyde to cause secondary pollution problems.
Strong oxidizing property ore deposit of the photocatalysis purifying technology using titanium dioxide by electron-hole pair caused by ultraviolet excitation
Change degradable organic pollutant, have the advantages that energy consumption is low, secondary pollution is few, the term of validity is long.But still have in actual applications
Electron hole easily compound and titanium dioxide and toxic gas molecular collision probability smaller the shortcomings that causing photocatalysis efficiency low.
In addition, light catalytic purifying process needs uviol lamp normally opened, it is unfavorable for health.
A kind of preparation of air purifier formaldehyde composite screen composite is described in patent CN105642248A
Method, its with crosslinking agent by titanium dioxide and poly- Isosorbide-5-Nitrae-diphenyl diacetylene sticking on the activated carbon to reach clean-up effect, this
The use of crosslinking agent hinders the conduction of electronics in kind method, causes prepared composite rate of catalysis reaction slow.So
Studying a kind of catalysis material for being capable of quick, the abundant efficient degradation of VOC pernicious gases such as PARA FORMALDEHYDE PRILLS(91,95) has critically important reality
Meaning.
The content of the invention
The technical problems to be solved by the invention are for above shortcomings in the prior art, there is provided a kind of adsorptivity
Graphene oxide/titanium dioxide-activated carbon three-dimensional composite material that energy is good, photocatalytic degradation efficiency is high and preparation method thereof.
In order to solve the above technical problems, technical scheme provided by the invention is：
A kind of graphene oxide/titanium dioxide-activated carbon three-dimensional composite material is provided, the three-dimensional composite material is by aoxidizing
Graphene/titania composite material Direct Uniform is intensive to be attached to active carbon filter screen or carbon fibre web surface obtains.
By such scheme, the graphene oxide/composite titania material particle diameter is 5-50nm.
The present invention also provides the preparation method of above-mentioned graphene oxide/titanium dioxide-activated carbon three-dimensional composite material, step
It is as follows：
1) graphene oxide/composite titania material is prepared：Graphene oxide is disperseed using the method for ultrasonic disperse
In deionized water and the in the mixed solvent of alcohol, graphene oxide dispersion is obtained, then adds mixed crystal type nanometer titanium dioxide
Into the graphene oxide dispersion, ultrasonic disperse, stirring alternately twice, each 1-2 hours, obtain finely dispersed mixing
Liquid, then gained mixed liquor is placed in hydrothermal reaction kettle and carries out hydro-thermal reaction, obtained compound containing graphene oxide/titanium dioxide
The suspension of material；
2) graphene oxide/titanium dioxide-activated carbon three-dimensional composite material is prepared：Active carbon filter screen or carbon fibre web are soaked
Bubble is in the suspension containing graphene oxide/composite titania material obtained by step 1), and supersound process further takes out drying, repeatedly
1-5 times, obtain graphene oxide/titanium dioxide-activated carbon three-dimensional composite material.
By such scheme, the step 1) alcohol is methanol or ethanol；The volume of the in the mixed solvent alcohol and deionized water
Than for 5:1-1:5.
By such scheme, the mass concentration of the step 1) graphene oxide dispersion is 0.01-0.1%.
By such scheme, the mass concentration of titanium dioxide is 1-10% in the step 1) mixed liquor.
By such scheme, the step 1) hydrothermal reaction condition is：1-8h is reacted at 100-200 DEG C.
Present invention additionally comprises above-mentioned graphene oxide/titanium dioxide-activated carbon three-dimensional composite material as catalysis material
Purposes.
And the purification of air being prepared according to above-mentioned graphene oxide/titanium dioxide-activated carbon three-dimensional composite material
Equipment.
Graphene oxide/titanium dioxide-activated carbon three-dimensional composite material of the present invention is based on physical absorption and light is urged
Change decomposition technique, the gas formaldehyde pollutant in air is removed by " absorbing and storing-photocatalysis Decomposition " pattern, can be high
Effect removes the pernicious gases such as formaldehyde, and effectively reduces the secondary pollution risk that pure absorption mode may be brought.
The present invention removes the pernicious gases such as formaldehyde using " absorbing and storing-photocatalysis Decomposition " pattern：First, by modified
Porous carbon materials adsorb to toxic gas, realize the enrichment of toxic gas；Secondly, pernicious gas is entered by titanium dioxide
Row photocatalytic degradation, the removal for toxic gas is realized, the wherein addition of graphene oxide quickly can shift electronics,
The compound of light induced electron and hole can be reduced, increases the life-span of light induced electron, while nano titania material can also be reduced
The agglomeration of material, strengthen its photocatalytic activity.Because the method that the present invention uses and preparation technology need not use bonding agent,
Therefore will not produce because the decline of photocatalysis performance caused by addition bonding agent.
The beneficial effects of the present invention are：The present invention uses ultrasonic method by graphene oxide/titanium dioxide composite wood
Material is embedded in netted carbon material, using the fabulous electric conductivity of graphene and the network structure of carbon material, by titanium dioxide through light
The surface of activated carbon is preferably sent to according to caused light induced electron, so as to which the formaldehyde molecule for being enriched in activated carbon surface be decomposed
As the water and carbon dioxide of nontoxic pollution-free, to reach the thorough clean-up effect of PARA FORMALDEHYDE PRILLS(91,95).Test result shows, institute of the present invention
Graphene oxide/titanium dioxide of offer-activated carbon three-dimensional composite material PARA FORMALDEHYDE PRILLS(91,95) has excellent absorption property and light to urge
Change degradation property, handled by the absorption degradation of the composite, (concentration is to the low concentration formaldehyde in household in 10h
1.0mg/m3) clearance is up to 82.5-95.6%.
Brief description of the drawings
Fig. 1 is graphene oxide/titanium dioxide-activated carbon three-dimensional composite material prepared by 1-3 of the embodiment of the present invention
Photocatalytic degradation efficiency figure；
Fig. 2 is the scanning electron of graphene oxide/titanium dioxide-activated carbon three-dimensional composite material prepared by embodiment 3
Microphotograph.
Embodiment
To make those skilled in the art more fully understand technical scheme, the present invention is made below in conjunction with the accompanying drawings into
One step is described in detail.
Embodiment 1
Graphene oxide/titanium dioxide-activated carbon three-dimensional composite material is prepared, step is as follows：
The graphene oxide for weighing 12mg is slowly added into the molten of 100mL water under stirring and 20mL ethanol
In liquid, half an hour is ultrasonically treated, half an hour is stirred for, it is fully mixed, obtain graphene oxide dispersion.
The mixed crystal type titanium dioxide that 1.2g particle diameters are 5nm is added slowly to the above-mentioned oxidation stone being under stirring
In black alkene dispersion liquid, stirring carries out ultrasound 1 hour again after 1 hour, this process is repeated twice, and obtains finely dispersed mixing
Liquid；The mixed liquor of gained is poured into the autoclave containing tetrafluoroethene liner, reacts 1 in the environment of being put into 100 DEG C
Hour, take out, naturally cool to room temperature, obtain the suspension containing graphene oxide/composite titania material, it is stand-by.
One piece of 5cm × 5cm active carbon filter screen is cut, is dried half an hour at 150 DEG C in an oven, then by the activity
Carbon filtration net, which is put into the above-mentioned suspension containing graphene oxide/composite titania material, to be soaked, and ensures that it is submerged in suspension
In, ultrasound 5 minutes, then take out, be laid in dryer and dried one hour at 150 DEG C, such immersion-drying repeatedly three
It is secondary, obtain graphene oxide/titanium dioxide-activated carbon three-dimensional composite material.
The photocatalysis of formaldehyde is carried out to the titanium dioxide/graphene prepared by the present embodiment-activated carbon three-dimensional composite material
Degradation experiment, specific method are as follows：Take one block of graphene oxide/titanium dioxide prepared-activated carbon three-dimensional composite material warp
Preservative film, which wraps, to be put into reative cell (reaction chamber volume 60L), is covered and is covered in reaction ceiling, seals the ring of surrounding
Border, formaldehyde volatilization device is put into wherein, treats that its volatilization is complete, reach after balance that (now concentration of formaldehyde is 1.0mg/m3),
Among graphene oxide/titanium dioxide-activated carbon three-dimensional composite material is sufficiently exposed into the air that reative cell contains formaldehyde, allow
It opens uviol lamp photocatalysis 3 hours after adsorbing 3 hours, and rear stand treats that wherein gas reaches thorough balance, measures the present embodiment institute
Obtained composite is 82.5% to the clearance for reacting indoor formaldehyde in 10h.
Embodiment 2
Graphene oxide/titanium dioxide-activated carbon three-dimensional composite material is prepared, step is as follows：
The graphene oxide for weighing 100mg is slowly added into 20mL water and 100mL ethanol under stirring
In solution, half an hour is ultrasonically treated under 100Hz frequency, is stirred for half an hour, it is fully mixed, obtains graphene oxide
Dispersion liquid.
The graphite oxide that the mixed crystal type titanium dioxide that 10g particle diameters are about 50nm is added slowly to be under stirring
In alkene dispersion liquid, ultrasonic half an hour is carried out again after stirring half an hour, this process is repeated twice, and obtains finely dispersed mixing
Liquid；The mixed liquor of gained is poured into the autoclave containing tetrafluoroethene liner, reacts 8 in the environment of being put into 200 DEG C
Hour, take out, naturally cool to room temperature, obtain the suspension containing graphene oxide/composite titania material, it is stand-by.
One piece of 5cm × 5cm active carbon filter screen is cut, is dried half an hour at 150 DEG C in an oven, then by the activity
Carbon filtration net, which is put into the above-mentioned suspension containing graphene oxide/composite titania material, to be soaked, and ensures that it is submerged in suspension
In, ultrasound 5 minutes, then take out, be laid in dryer and dried one hour at 150 DEG C, such immersion-drying repeatedly three
It is secondary, take out, obtain graphene oxide/titanium dioxide-activated carbon three-dimensional composite material.
It is three-dimensional multiple that the prepared titanium dioxide/graphene of this experiment-activated carbon is tested using method same as Example 1
The photocatalysis performance of condensation material PARA FORMALDEHYDE PRILLS(91,95), measure the removal of composite obtained by the present embodiment PARA FORMALDEHYDE PRILLS(91,95) under the same conditions
Rate is 90%.
Embodiment 3
Graphene oxide/titanium dioxide-activated carbon three-dimensional composite material is prepared, step is as follows：
Weigh the solution of 60mL water and 20mL ethanol that 30mg graphene oxides are slowly added under stirring
In, half an hour is ultrasonically treated under 100Hz frequency, is stirred for half an hour, it is fully mixed, graphene oxide is obtained and disperses
Liquid.
The mixed crystal type titanium dioxide that 1.6g particle diameters are about 21nm is added slowly to the above-mentioned oxygen being under stirring
In graphite alkene dispersion liquid, ultrasonic half an hour is carried out again after stirring half an hour, this process is repeated twice, and is obtained finely dispersed
Mixed liquor；The mixed liquor of gained is poured into the autoclave containing tetrafluoroethene liner, it is anti-in the environment of being put into 150 DEG C
Answer 5 hours, take out, naturally cool to room temperature, obtain the suspension containing graphene oxide/composite titania material, it is stand-by.
One piece of 5cm × 5cm active carbon filter screen is cut, is dried half an hour at 150 DEG C in an oven, then by the activity
Carbon filtration net, which is put into the above-mentioned suspension containing graphene oxide/composite titania material, to be soaked, and ensures that it is submerged in mixed liquor
In, ultrasound 5 minutes, then take out, be laid in dryer and dried one hour at 150 DEG C, such immersion-drying repeatedly three
It is secondary, take out, obtain graphene oxide/titanium dioxide-activated carbon three-dimensional composite material.
It is three-dimensional multiple that the prepared titanium dioxide/graphene of this experiment-activated carbon is tested using method same as Example 1
The photocatalysis performance of condensation material PARA FORMALDEHYDE PRILLS(91,95), measure the removal of composite obtained by the present embodiment PARA FORMALDEHYDE PRILLS(91,95) under the same conditions
Rate is 95.6%.
It is graphene oxide/titanium dioxide-activated carbon three-dimensional composite material prepared by embodiment 1-3 as shown in Figure 1
Photocatalytic degradation efficiency figure, (mass ratio of titanium dioxide and graphene oxide is 160 to embodiment 3 in raw material as seen from the figure:3) institute
Composite photocatalytic degradation effect it is best, 10 hours or so the degradation rates in 60L reative cells for formaldehyde reach
95.6% (initial concentration 1.0mg/m3)。
Fig. 2 is the scanning electron of graphene oxide/titanium dioxide-activated carbon three-dimensional composite material prepared by the present embodiment
Microphotograph, graphene oxide/composite titania material of uniform size is intensive as seen from the figure is attached to activated carbon surface,
Graphene oxide/composite titania material average grain diameter is 21nm or so.
Claims (9)
- A kind of 1. graphene oxide/titanium dioxide-activated carbon three-dimensional composite material, it is characterised in that：The three-dimensional composite material Active carbon filter screen is attached to by graphene oxide/composite titania material Direct Uniform is intensive or carbon fibre web surface obtains.
- 2. graphene oxide/titanium dioxide-activated carbon three-dimensional composite material according to claim 1, it is characterised in that：Institute It is 5-50nm to state graphene oxide/composite titania material particle diameter.
- 3. a kind of preparation method of graphene oxide/titanium dioxide-activated carbon three-dimensional composite material described in claim 1 or 2, It is characterized in that step is as follows：1) graphene oxide/composite titania material is prepared：Graphene oxide is scattered in using the method for ultrasonic disperse The in the mixed solvent of ionized water and alcohol, graphene oxide dispersion is obtained, mixed crystal type nanometer titanium dioxide is then added to institute To state in graphene oxide dispersion, ultrasonic disperse, stirring alternately twice, each 1-2 hours, obtain finely dispersed mixed liquor, Then gained mixed liquor is placed in hydrothermal reaction kettle and carries out hydro-thermal reaction, obtain containing graphene oxide/titanium dioxide composite wood The suspension of material；2) graphene oxide/titanium dioxide-activated carbon three-dimensional composite material is prepared：Active carbon filter screen or carbon fibre web are immersed in In suspension containing graphene oxide/composite titania material obtained by step 1), supersound process further takes out drying, repeatedly 1-5 It is secondary, obtain graphene oxide/titanium dioxide-activated carbon three-dimensional composite material.
- 4. preparation method according to claim 3, it is characterised in that the step 1) alcohol is methanol or ethanol；The mixing The volume ratio of alcohol and deionized water is 5 in solvent:1-1:5.
- 5. preparation method according to claim 3, it is characterised in that the quality of the step 1) graphene oxide dispersion Concentration is 0.01-0.1%.
- 6. preparation method according to claim 3, it is characterised in that the quality of titanium dioxide in the step 1) mixed liquor Concentration is 1-10%.
- 7. preparation method according to claim 3, it is characterised in that the step 1) hydrothermal reaction condition is：In 100- 1-8h is reacted at 200 DEG C.
- 8. graphene oxide/titanium dioxide-activated carbon three-dimensional composite material described in a kind of claim 1 or 2 is as photocatalysis The purposes of material.
- 9. a kind of graphene oxide/titanium dioxide-activated carbon three-dimensional composite material according to claim 1 or 2 is prepared into The air cleaning facility arrived.
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| CN108744959A (en) * | 2018-06-05 | 2018-11-06 | 广西中医药大学 | A kind of preparation method and application except formaldehyde graphene carbon packet |
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| CN109772301A (en) * | 2019-02-27 | 2019-05-21 | 知合环境（北京）有限责任公司 | Modified ozone oxidation catalyst of a kind of graphene oxide and preparation method thereof |
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