CN105536763A - Carbon-atom-doped titanium dioxide photocatalyst and preparation method thereof - Google Patents
Carbon-atom-doped titanium dioxide photocatalyst and preparation method thereof Download PDFInfo
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- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 94
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 43
- 239000004408 titanium dioxide Substances 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000002270 dispersing agent Substances 0.000 claims abstract description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 46
- 125000004432 carbon atom Chemical group C* 0.000 claims description 46
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims description 19
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 18
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 14
- -1 sorbitan fatty acid ester Chemical class 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 11
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 10
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 8
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 8
- 239000007767 bonding agent Substances 0.000 claims description 7
- 239000001569 carbon dioxide Substances 0.000 claims description 7
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- SRSXLGNVWSONIS-UHFFFAOYSA-M benzenesulfonate Chemical compound [O-]S(=O)(=O)C1=CC=CC=C1 SRSXLGNVWSONIS-UHFFFAOYSA-M 0.000 claims description 5
- 229940077388 benzenesulfonate Drugs 0.000 claims description 5
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 4
- 239000004115 Sodium Silicate Substances 0.000 claims description 4
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 4
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 4
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 4
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 2
- 239000000194 fatty acid Substances 0.000 claims description 2
- 229930195729 fatty acid Natural products 0.000 claims description 2
- 239000010452 phosphate Substances 0.000 claims description 2
- 229920000136 polysorbate Polymers 0.000 claims description 2
- 229950008882 polysorbate Drugs 0.000 claims description 2
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims description 2
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 2
- 150000005846 sugar alcohols Polymers 0.000 claims description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract description 15
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract description 15
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 14
- 229910021529 ammonia Inorganic materials 0.000 abstract description 7
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 239000003053 toxin Substances 0.000 abstract description 3
- 231100000765 toxin Toxicity 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 230000001580 bacterial effect Effects 0.000 abstract 1
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 9
- 241000894006 Bacteria Species 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000000746 purification Methods 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 4
- 239000008096 xylene Substances 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000000505 pernicious effect Effects 0.000 description 3
- 239000002341 toxic gas Substances 0.000 description 3
- 241000233866 Fungi Species 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- 150000001555 benzenes Chemical class 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 230000002045 lasting effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007146 photocatalysis Methods 0.000 description 2
- 230000001699 photocatalysis Effects 0.000 description 2
- 229920002401 polyacrylamide Polymers 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 235000019830 sodium polyphosphate Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009967 tasteless effect Effects 0.000 description 2
- HVUMOYIDDBPOLL-UHFFFAOYSA-N 2-(3,4-Dihydroxyoxolan-2-yl)-2-hydroxyethyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)C1OCC(O)C1O HVUMOYIDDBPOLL-UHFFFAOYSA-N 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001877 deodorizing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004992 fission Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 235000010482 polyoxyethylene sorbitan monooleate Nutrition 0.000 description 1
- 229920000053 polysorbate 80 Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- MZSDGDXXBZSFTG-UHFFFAOYSA-M sodium;benzenesulfonate Chemical group [Na+].[O-]S(=O)(=O)C1=CC=CC=C1 MZSDGDXXBZSFTG-UHFFFAOYSA-M 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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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
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/18—Carbon
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a carbon-atom-doped titanium dioxide photocatalyst. The carbon-atom-doped titanium dioxide photocatalyst is composed of, by mass, 0.5-10% of carbon-atom-doped nanoscale titanium dioxide, 0.1-5% of dispersant, 0.1-5% of adhesive and the balance water. The photocatalyst can generate effective absorption in a visible light area and purify air rapidly, efficiently and durably, formaldehyde, benzene, toluene, dimethylbenzene, ammonia, TVOC and other harmful gas can be eliminated thoroughly, bacterial can be inhibited and killed, and a product is free of toxin or smell, safe and environmentally friendly. The invention further discloses a preparation method of the carbon-atom-doped titanium dioxide photocatalyst. The carbon-atom-doped titanium dioxide photocatalyst and the preparation method thereof are simple in preparation process flow, low in production cost and suitable for industrialized production.
Description
Technical field
The invention belongs to photocatalyst technology field, relate in particular to photocatalyst of titanium dioxide of a kind of doping carbon atom and preparation method thereof.
Background technology
Along with global industry, urban modernization fast development, air pollution in recent years aggravates, human habitat also suffers severe contamination, modern has the time of 80% to spend in indoor every day, or even closing or airtight indoor life, therefore the quality of indoor environmental quality directly affects the healthy of people, and therefore purification of air material arises at the historic moment.
Photocatalyst is a kind of with nanoscale Ti0
2for the general name with the photosemiconductor material of photo-catalysis function of representative, under the effect of ultraviolet light, the photocatalyst coating substrate surface can produce strong catalytic degradation function, can effectively degrade toxic and harmful in air, kill various bacteria, and the toxin that bacterium or fungi can be discharged decomposes and harmless treatment; The function such as simultaneously also possess deodorizing, anti-soil, purify air.
Nanoscale Ti0
2because of at the conversion of solar energy and storage, C0
2the application of the aspects such as reduction, complicated organic pollutant degradation and its good chemical stability had, abrasion resistance, low cost, the feature such as nontoxic and become the photochemical catalyst of most application potential, particularly in recent years, along with becoming increasingly conspicuous of energy and environment problem in world wide, the research of photocatalysis technology more and more comes into one's own.
But, pure Ti0
2only can absorbing wavelength at the ultraviolet light of below 400nm, and sunshine medium ultraviolet light to occupy ratio very low, only less than 5%, it does not have absorption to the visible ray accounting for solar energy 43%, so make Ti0
2photoresponse scope expands to from ultraviolet region the emphasis that visible region has become research at present.
Summary of the invention
For this reason, technical problem to be solved by this invention is nanoscale TiO
2only can absorb and occupy the very low ultraviolet light of ratio and absorption is not had to visible ray, thus propose the TiO that a kind of visible region produces the doping carbon atom effectively absorbed
2photocatalyst and preparation method thereof.
For solving the problems of the technologies described above, technical scheme of the present invention is:
The invention provides a kind of photocatalyst of titanium dioxide of doping carbon atom, it is composed of the following components by percentage to the quality, the Nano titanium dioxide 0.5 ~ 10% of doping carbon atom, dispersant 0.1 ~ 5%, bonding agent 0.1 ~ 5%, and surplus is water.
As preferably, the particle diameter of described Nano titanium dioxide is less than 30nm, and crystal formation is one or both in Detitanium-ore-type, rutile-type.
As preferably, described dispersant is selected from one or more in sorbitan fatty acid ester, polysorbate, alkylamine salt, sulfuric acid, phosphate ester salt, quaternary ammonium salt, benzene sulfonate, polyoxyethylene, polyalcohol.
As preferably, described bonding agent is selected from one or more in polytetrafluoroethylene (PTFE), carboxymethyl cellulose, sodium metasilicate, polyvinyl alcohol.
The present invention also provides a kind of preparation method of photocatalyst of titanium dioxide of doping carbon atom, and it comprises the steps:
1) Nano titanium dioxide is placed in carbon dioxide atmosphere microwave treatment, obtains the nano titanium oxide of doping carbon atom;
2) ultrasonic disperse step 1) in the nano titanium oxide of doping carbon atom, dispersant, bonding agent and the water that obtain, after stirring, obtain the photocatalyst of titanium dioxide of doping carbon atom.
As preferably, described step 1) described in microwave treatment, microwave power is 500-5000W, microwave time 2-60min.
As preferably, described step 2) described in ultrasonic disperse ultrasonic power be 100-1500W, frequency is 40KHz, and ultrasonic time is 10-30min.
As preferably, described step 2) described in stir to be specially and at room temperature stir 30-60min with the mixing speed of 1500-1800r/min.
Technique scheme of the present invention has the following advantages compared to existing technology:
(1) photocatalyst of titanium dioxide of doping carbon atom of the present invention, it is composed of the following components by percentage to the quality, the Nano titanium dioxide 0.5 ~ 10% of doping carbon atom, dispersant 0.1 ~ 5%, bonding agent 0.1 ~ 5%, and surplus is water.Described photocatalyst not only can absorb the ultraviolet light accounting for sunshine about 4%, can also produce the visible ultraviolet region accounting for sunshine about 50% and effectively absorb, visible ultraviolet wavelength is 380-400nm, its can be quick, efficient, lasting purify air, the pernicious gases such as thorough elimination formaldehyde, benzene,toluene,xylene, ammonia, TVOC also can suppress kill bacteria, and product is nonpoisonous and tasteless, safety and environmental protection.
(2) preparation method of the photocatalyst of titanium dioxide of doping carbon atom of the present invention, nano titanium oxide is placed in after carbon dioxide atmosphere microwave treatment obtains the titanium dioxide of doping carbon atom, disperse, stir and obtain the photocatalyst of titanium dioxide of doping carbon atom together with water with dispersant, binding agent, preparation technology's flow process is simple, production cost is low, being suitable for suitability for industrialized production, proposing good solution for improving the environmental problems such as toxic gas.
Detailed description of the invention
In order to make content of the present invention be more likely to be clearly understood, the present invention is further detailed explanation according to a particular embodiment of the invention below.
Embodiment 1
The present embodiment provides a kind of photocatalyst of titanium dioxide of doping carbon atom, composed of the following components: the Nano titanium dioxide of 0.1kg doping carbon atom, sorbester p18 0.01kg, polyacrylamide 0.01kg, polytetrafluoroethylene (PTFE) 0.02kg, water 19.86kg, wherein, Nano titanium dioxide is Detitanium-ore-type, and particle diameter is 10nm.
The present embodiment also provides a kind of preparation method of photocatalyst of titanium dioxide of doping carbon atom, and it comprises the steps:
1) 0.1kg Nano titanium dioxide is placed in the micro-wave oven being full of carbon dioxide, under the microwave power of 500W, processes 60min, obtain the nano titanium oxide of faint yellow doping carbon atom;
2) by the nano titanium oxide of described doping carbon atom and 0.01kg sorbester p18,0.01kg polyacrylamide, 0.02kg polytetrafluoroethylene (PTFE) and 19.86kg water ultrasonic disperse 10min under the frequency of the power of 100W, 40KHz, then under room temperature, stir 30min with the mixing speed of 1500r/min, obtain 20kg purification of air photocatalyst of titanium dioxide.
Embodiment 2
The present embodiment provides a kind of photocatalyst of titanium dioxide of doping carbon atom, composed of the following components: the Nano titanium dioxide of 2kg doping carbon atom, Tween-80 0.5kg, sodium polyphosphate 0.5kg, carboxymethyl cellulose 1kg, water 16kg, wherein, Nano titanium dioxide is rutile-type, and particle diameter is 15nm.
The present embodiment also provides a kind of preparation method of photocatalyst of titanium dioxide of doping carbon atom, and it comprises the steps:
1) 2kg Nano titanium dioxide is placed in the micro-wave oven being full of carbon dioxide, under the microwave power of 5000W, processes 2min, obtain the nano titanium oxide of faint yellow doping carbon atom;
2) by the nano titanium oxide of described doping carbon atom and 0.5kg Tween-80,0.5kg sodium polyphosphate, 1kg carboxymethyl cellulose and 16kg water ultrasonic disperse 30min under the frequency of the power of 1500W, 40KHz, then under room temperature, stir 60min with the mixing speed of 1800r/min, obtain 20kg purification of air photocatalyst of titanium dioxide.
Embodiment 3
The present embodiment provides a kind of photocatalyst of titanium dioxide of doping carbon atom, composed of the following components: the Nano titanium dioxide of 1kg doping carbon atom, Tween-40 0.25kg, polyethylene glycol 0.25kg, sodium metasilicate 0.5kg, water 18kg, wherein, Nano titanium dioxide is the mixed crystal type of rutile, Detitanium-ore-type, and particle diameter is 20nm.
The present embodiment also provides a kind of preparation method of photocatalyst of titanium dioxide of doping carbon atom, and it comprises the steps:
1) 1kg Nano titanium dioxide is placed in the micro-wave oven being full of carbon dioxide, under the microwave power of 2500W, processes 30min, obtain the nano titanium oxide of faint yellow doping carbon atom;
2) by the nano titanium oxide of described doping carbon atom and 0.25kg Tween-40,0.25kg polyethylene glycol, 0.5kg sodium metasilicate and 18kg water ultrasonic disperse 20min under the frequency of the power of 500W, 40KHz, then under room temperature, stir 30min with the mixing speed of 1650r/min, obtain 20kg purification of air photocatalyst of titanium dioxide.
Embodiment 4
The present embodiment provides a kind of photocatalyst of titanium dioxide of doping carbon atom, composed of the following components: the Nano titanium dioxide of 1kg doping carbon atom, sulfuric acid 0.55kg, benzene sulfonate 0.45kg, polyvinyl alcohol 1kg, water 17kg, wherein, Nano titanium dioxide is rutile-type, and particle diameter is 25nm; Wherein, sulfuric acid is sodium alkyl sulfate, and benzene sulfonate is benzene sulfonic acid sodium salt.
The present embodiment also provides a kind of preparation method of photocatalyst of titanium dioxide of doping carbon atom, and it comprises the steps:
1) 1kg Nano titanium dioxide is placed in the micro-wave oven being full of carbon dioxide, under the microwave power of 2000W, processes 40min, obtain the nano titanium oxide of faint yellow doping carbon atom;
2) by the nano titanium oxide of described doping carbon atom and 0.55kg sulfuric acid, 0.45kg benzene sulfonate, 1kg polyvinyl alcohol and 17kg water ultrasonic disperse 15min under the frequency of the power of 800W, 40KHz, then under room temperature, stir 35min with the mixing speed of 1450r/min, obtain 20kg purification of air photocatalyst of titanium dioxide.
It is titanium dioxide reduces the irradiation light causing the bond fission of the organic-matter chemical such as toxic gas, bacterium energy threshold as catalyst that the approach of photocatalyst of titanium dioxide degraded pernicious gas of the present invention and sterilization mainly contains two kinds: one, and the light wave of degraded is extended to visible ultraviolet light light district (accounting for sunlight intensity about 50%) from ultraviolet region (accounting for sunlight intensity about 4%); Another is that sunshine is imported in the middle of the source thing of poison gas, bacterium, photocatalytic degradation is carried out to thing inside, source, degradation reaction region is made to fill source thing extended surface to whole interior zone, can be quick, efficient, lasting purify air, the pernicious gases such as thorough elimination formaldehyde, benzene,toluene,xylene, ammonia, TVOC also can suppress kill bacteria, and product is nonpoisonous and tasteless, safety and environmental protection.
Experimental example
The pollutant of photocatalyst of titanium dioxide degraded mainly contains formaldehyde, benzene,toluene,xylene, ammonia, TVOC etc., the toxin that bacterium or fungi can be discharged decomposes and harmless treatment, experiment shows, in the middle of the new house just fitted up, indoor concentration of formaldehyde reaches 0.23 milligram/cubic metre, the concentration of benzene,toluene,xylene reaches 0.31 milligram/cubic metre, and the concentration of ammonia reaches 0.64 milligram/cubic metre; After the wall of indoor is coated the photocatalyst of titanium dioxide in 0.2kg embodiment 1, under ventilation has the environment of sunlight, to cross the data of testing after hour be concentration of formaldehyde is 0.12 milligram/cubic metre, benzene class concentration is 0.14 milligram/cubic metre, ammonia is 0.38 milligram/cubic metre, after under the environment through the logical light of one day, concentration of formaldehyde has dropped to less than 0.07 milligram/cubic metre, benzene class concentration has dropped to 0.075 milligram/cubic metre, the concentration of ammonia has dropped to less than 0.15 milligram/cubic metre, reaches indoor living environment standard.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain of the invention.
Claims (8)
1. a photocatalyst of titanium dioxide for doping carbon atom, is characterized in that, by percentage to the quality, composed of the following components, the Nano titanium dioxide 0.5 ~ 10% of doping carbon atom, dispersant 0.1 ~ 5%, bonding agent 0.1 ~ 5%, and surplus is water.
2. the photocatalyst of titanium dioxide of doping carbon atom according to claim 1, is characterized in that, the particle diameter of described Nano titanium dioxide is less than 30nm, and crystal formation is one or both in Detitanium-ore-type, rutile-type.
3. the photocatalyst of titanium dioxide of doping carbon atom according to claim 1 and 2, it is characterized in that, described dispersant is selected from one or more in sorbitan fatty acid ester, polysorbate, alkylamine salt, sulfuric acid, phosphate ester salt, quaternary ammonium salt, benzene sulfonate, polyoxyethylene, polyalcohol.
4. the photocatalyst of titanium dioxide of doping carbon atom according to claim 3, is characterized in that, described bonding agent is selected from one or more in polytetrafluoroethylene (PTFE), carboxymethyl cellulose, sodium metasilicate, polyvinyl alcohol.
5. a preparation method for the photocatalyst of titanium dioxide of doping carbon atom, is characterized in that, comprises the steps:
1) Nano titanium dioxide is placed in carbon dioxide atmosphere microwave treatment, obtains the nano titanium oxide of doping carbon atom;
2) ultrasonic disperse step 1) in the nano titanium oxide of doping carbon atom, dispersant, bonding agent and the water that obtain, after stirring, obtain the photocatalyst of titanium dioxide of doping carbon atom.
6. the preparation method of the photocatalyst of titanium dioxide of doping carbon atom according to claim 5, is characterized in that, described step 1) described in microwave treatment, microwave power is 500-5000W, microwave time 2-60min.
7. the preparation method of the photocatalyst of titanium dioxide of doping carbon atom according to claim 6, is characterized in that, described step 2) described in ultrasonic disperse ultrasonic power be 100-1500W, frequency is 40KHz, and ultrasonic time is 10-30min.
8. the preparation method of the photocatalyst of titanium dioxide of doping carbon atom according to claim 7, is characterized in that, described step 2) described in stir be specially at room temperature with the mixing speed of 1500-1800r/min stir 30-60min.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107029803A (en) * | 2017-05-03 | 2017-08-11 | 保定茂森环保科技有限公司 | A kind of production method for the efficient photocatalyst of carbon atom nano titanium oxide that adulterates |
| CN111482165A (en) * | 2020-04-14 | 2020-08-04 | 芜湖胖蛙环保科技有限公司 | Preparation method of modified photocatalyst solution |
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| CN101347724A (en) * | 2008-08-19 | 2009-01-21 | 武汉大学 | Carbon 60/titanium dioxide nano compound photocatalyst as well as preparation method and use thereof |
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| CN104759273A (en) * | 2015-03-04 | 2015-07-08 | 江苏大学 | Preparation method for in-situ carbon doped hollow titanium dioxide visible light photocatalyst |
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