CN110420629A - A kind of photocatalyst preparation method and applications of catalytic degradation formaldehyde - Google Patents
A kind of photocatalyst preparation method and applications of catalytic degradation formaldehyde Download PDFInfo
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- CN110420629A CN110420629A CN201910674707.3A CN201910674707A CN110420629A CN 110420629 A CN110420629 A CN 110420629A CN 201910674707 A CN201910674707 A CN 201910674707A CN 110420629 A CN110420629 A CN 110420629A
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- titanium dioxide
- catalytic degradation
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- photocatalyst
- anatase titanium
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 230000015556 catabolic process Effects 0.000 title claims abstract description 21
- 238000006731 degradation reaction Methods 0.000 title claims abstract description 21
- 239000011941 photocatalyst Substances 0.000 title claims abstract description 21
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 230000000694 effects Effects 0.000 claims abstract description 10
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims abstract description 7
- 230000001590 oxidative effect Effects 0.000 claims abstract description 7
- 239000007800 oxidant agent Substances 0.000 claims abstract description 6
- 239000007789 gas Substances 0.000 claims abstract description 5
- 239000000758 substrate Substances 0.000 claims abstract description 4
- 229930040373 Paraformaldehyde Natural products 0.000 claims abstract description 3
- 229920002866 paraformaldehyde Polymers 0.000 claims abstract description 3
- 230000000505 pernicious effect Effects 0.000 claims abstract description 3
- 239000011259 mixed solution Substances 0.000 claims description 20
- 239000000243 solution Substances 0.000 claims description 20
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 12
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 11
- 239000000908 ammonium hydroxide Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 239000004408 titanium dioxide Substances 0.000 claims description 9
- 239000008367 deionised water Substances 0.000 claims description 8
- 229910021641 deionized water Inorganic materials 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 6
- 238000004090 dissolution Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- 229910017604 nitric acid Inorganic materials 0.000 claims description 2
- 239000002351 wastewater Substances 0.000 claims description 2
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 abstract description 12
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 8
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 6
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 abstract description 4
- 229910021529 ammonia Inorganic materials 0.000 abstract description 4
- 239000003344 environmental pollutant Substances 0.000 abstract description 4
- 231100000719 pollutant Toxicity 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 3
- 239000001569 carbon dioxide Substances 0.000 abstract description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 231100000252 nontoxic Toxicity 0.000 abstract description 2
- 230000003000 nontoxic effect Effects 0.000 abstract description 2
- 239000008096 xylene Substances 0.000 abstract description 2
- 229960004279 formaldehyde Drugs 0.000 description 10
- 235000019256 formaldehyde Nutrition 0.000 description 10
- 239000000463 material Substances 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- -1 hydroxyl radical free radical Chemical class 0.000 description 4
- 230000001699 photocatalysis Effects 0.000 description 4
- 238000007146 photocatalysis Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000004332 deodorization Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 208000032170 Congenital Abnormalities Diseases 0.000 description 1
- 206010011224 Cough Diseases 0.000 description 1
- 206010013789 Dry throat Diseases 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 206010019233 Headaches Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011953 bioanalysis Methods 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000002242 deionisation method Methods 0.000 description 1
- 208000002173 dizziness Diseases 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 231100000753 hepatic injury Toxicity 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000012543 microbiological analysis Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000013033 photocatalytic degradation reaction Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 210000001533 respiratory mucosa Anatomy 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 239000003053 toxin Substances 0.000 description 1
- 231100000765 toxin Toxicity 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
-
- 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
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/063—Titanium; Oxides or hydroxides thereof
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Catalysts (AREA)
Abstract
The present invention provides a kind of photocatalyst preparation method and applications of catalytic degradation formaldehyde, present invention aims at solving anatase titanium dioxide dissolubility, by changing its solution ph and addition oxidant, the solubility of Lai Tigao anatase titanium dioxide.At the same time, by the way that solution coating in substrate surface, is formed film after to be dried, catalytic degradation effect can be carried out by the pernicious gases such as PARA FORMALDEHYDE PRILLS(91,95) under the effect of light.The invention has the advantages that: (1) can effectively pollutants such as degradation of formaldehyde, benzene,toluene,xylene, ammonia, TVOC, make the harmless inorganic matter such as water and carbon dioxide；(2) have the advantages that the time persistently, continuous action；(3) nontoxic to the human body, harmless, and not will cause secondary pollution, there are relatively broad market prospects.
Description
Technical field
The present invention relates to a kind of method of catalytic degradation formaldehyde, in particular to prepared by the photocatalyst of a kind of catalytic degradation formaldehyde
Method and its application.
Background technique
With the improvement of living standards, the comfort in room and office, the demand of beautyization is also gradually increased in people,
Decoration frequency steps up, and caused indoor pollution problem is also more and more prominent.The formaldehyde that finishing material releases becomes
The major pollutants of room air, because the Form aldehyde release phase of finishing material is up to 3-15.
Formaldehyde is used as more highly toxic substance, is universally acknowledged potential carcinogen matter, and potentially force mutation-ure
One of.Formaldehyde can stimulate eyes and respiratory mucosa, cause immunity function exception, hepatic injury, injury of lungs and nerve center
System receives influence, such as dizziness, headache, dry throat, cough, and fetal anomaly can also be caused etc..Long Term Contact is exposed to
In formaldehyde environment, serious harm is caused to act on the health of human body.Currently, the minimizing technology to indoor formaldehyde mainly has: wait from
Muonic catalysis technology, absorption method, bioanalysis, chemical absorption method etc..However that there is removal efficiency is low for these methods, waste of material is big
And the disadvantages of being not easily recycled, and then limit further development.
Photocatalysis technology can use at room temperature as a kind of a kind of emerging catalytic degradation technology, have energy consumption
The advantages that low, treating capacity is big, fully reacting.It utilizes the strong oxidizing property hydroxyl radical free radical and negative oxygen generated under the irradiation of ultraviolet light
Ion makes the harmless inorganic matter such as water and carbon dioxide come the various pollutants in breaking air, to reach purification
The purpose of air.Photocatalytic degradation of organic matter, which administers aspect, a good application prospect, thus by various countries' scientific research in, work
The extensive attention of person, becomes most active research direction.
Summary of the invention
It can be using photocatalysis come the material of degradation of formaldehyde, specifically solution anatase titanium dioxide the purpose of the present invention is developing one kind
Titanium dioxide dissolubility, by changing its solution ph and addition oxidant, Lai Shixian anatase titanium dioxide is more
The effect of good catalytic degradation formaldehyde.
To achieve the above object, technical scheme is as follows:
S1: taking a certain amount of anatase titanium dioxide to be placed in a beaker, and deionized water is added, and stirring is allowed to sufficiently dissolve,
PH value is adjusted with certain density ammonium hydroxide, continues to stir, obtains mixed solution A；
S2: being filtered washing for the solution A that upper step obtains, and obtains pure solution B and undissolved anatase titanium dioxide titanium dioxide
Undissolved anatase titanium dioxide C is continued deionized water dissolving, and a small amount of citric acid is added by titanium C, is carried out with ammonium hydroxide
PH value is adjusted, and is continued to stir, is obtained mixed solution D；
S3: being filtered washing for mixed solution D again, obtains pure solution E and a small amount of undissolved anatase titanium dioxide titanium dioxide
Undissolved anatase titanium dioxide F is carried out deionized water dissolving by titanium F again, and a small amount of oxidant is added, and stirring is extremely
Sufficiently dissolution stands, obtains mixed solution G；
S4: mixed solution G is finally filtered operation, obtains pure Solution H and impurity I；
S5: by pure solution B, E and H are mixed and are measured the mass fraction of Wastewater by Nanometer Anatase titanium dioxide, and by adding
Add deionized water to adjust the concentration and pH value of titanium dioxide, obtains photocatalyst product J.
Further, in S1, the concentration of ammonium hydroxide is 5wt%, and pH value is in 7-8；In S2, the amount of citric acid is mixed solution D
0.1-0.2%.
Further, in S3, oxidant 20wt%H2O2, dilute HNO3One or two, additive amount are mixed solution
0.1-0.2%；In S5, adjusting the final concentration of titanium dioxide in 0.8-1.5% and pH value is 7-8.
Further, photocatalyst J is coated on substrate (tablecloth, sofa etc.) table by the photocatalyst product J application method
Face forms film after to be dried, can carry out catalytic degradation effect by the pernicious gases such as PARA FORMALDEHYDE PRILLS(91,95) under the effect of light.
Photocatalyst product of the present invention can absorb under light illumination and be equivalent to band-gap energy luminous energy below, send out its surface
Life motivates and generates electronics (e-) and hole (h+).These electrons and holes have very strong reduction and oxidability, energy and water
Or the oxygen reaction stored, the extremely strong hydroxyl free radical (OH) of oxidability and super negative oxonium ion (O) are generated, it will be various
Harmful chemical, odorant (formaldehyde, toluene, dimethylbenzene, ammonia etc.) decomposes or harmless treatment, so that it is empty to reach purification
Gas, anti-pollution deodorization effect.
Beneficial effect
1. it is comprehensive, photocatalyst can effectively pollutants such as degradation of formaldehyde, benzene,toluene,xylene, ammonia, TVOC, be allowed to
The inorganic matter harmless as water and carbon dioxide etc.；
2. duration, have the advantages that the time persistently, continuous action；
3. safety, product is nontoxic to the human body, harmless, and not will cause secondary pollution.
Specific embodiment
With reference to embodiment, the present invention is further illustrated.But the present invention is not limited to following embodiments.
Embodiment 1
4g anatase titanium dioxide is taken to be placed in 2L beaker, addition goes 1.5L ionized water to be stirred dissolution, with 5wt%'s
Ammonium hydroxide carries out pH value to solution and is adjusted to 8, continues after stirring 30min, stands, obtain mixed solution A；
Mixed solution A is filtered operation, the anatase titanium dioxide C for obtaining pure solution B and not being completely dissolved is used in combination
Ethanol washing 3-4 times, it is dry.Anatase titanium dioxide C is continued to dissolve, is placed in 2L beaker, add 1.5L go from
After sub- water, the citric acid of 1.5g is added, continues stirring and dissolving 10min, pH value is carried out to solution with the ammonium hydroxide of 5wt% and is adjusted to 8,
After stirring 30min, stands, obtain mixed solution D；
Mixed solution D is filtered operation again, the anatase titanium dioxide F for obtaining pure solution E and not being completely dissolved,
It is dry and with ethanol washing 3-4 times, anatase titanium dioxide F is continued to dissolve, is placed in 2L beaker, adds 1.5L's
After deionized water, the 20wt%H of 1.5g is added2O2, continue stirring and dissolving 10min, pH value carried out to solution with the ammonium hydroxide of 5wt%
8 are adjusted to, after stirring 30min, stands, obtains mixed solution G；
Mixed solution G is filtered operation, obtains pure Solution H and insoluble impurity I；
Pure solution B, E and H are mixed, and the quality point to the titanium dioxide in solution is carried out by spectrophotometer
Number, and the concentration of titanium dioxide is adjusted to 1wt% by the ammonium hydroxide of 5wt% and deionization, obtain photocatalyst product J.
The application method of photocatalyst is as follows:
Photocatalyst is coated on substrate (tablecloth, sofa etc.) surface, forms film after dry, under the action of light, is produced
Raw strong catalytic degradation function: toxic and harmful gas, killing various bacteria in energy sustaining degradation air, and can be by bacterium or fungi
The toxin released decomposes and harmless treatment；It is also equipped with the functions such as deodorization, anti-pollution simultaneously.
Through microbiological analysis inspection center, Guangdong Province according to JC/T1074-2008 " function of purifying indoor air coating material
Purifying property " and Q/SSHJ04-2018 " nano photo-catalytic " examine, the key technical indexes is as follows:
| Purifying formaldehyde effect | 96.9% (48 hours) |
| Toluene clean-up effect | 93.6% (24 hours) |
| Photocatalysis antibacterial | 99% |
| Ammonia removal rate (for 24 hours) % | 60% |
| PH value (25 DEG C): | 7.0—8.5 |
Above embodiments are described in detail specific implementation process of the invention, but the present invention be not limited to it is described
Embodiment, those skilled in the art can make various same replacements, these same replacements are belonged in the application
In claimed range.
Claims (6)
1. a kind of photocatalyst preparation method and applications of catalytic degradation formaldehyde, which comprises the following steps:
(1) it takes a certain amount of anatase titanium dioxide to be placed in a beaker, deionized water is added, stirring is allowed to sufficiently dissolve, with one
PH value is adjusted in the ammonium hydroxide for determining concentration, continues to stir, obtains mixed solution A；
(2) solution A that upper step obtains is filtered washing, obtains pure solution B and undissolved anatase titanium dioxide C,
Undissolved anatase titanium dioxide C is continued into deionized water dissolving, and a small amount of citric acid is added, carries out pH value with ammonium hydroxide
It adjusts, continues to stir, obtain mixed solution D；
(3) mixed solution D is filtered washing again, obtains pure solution E and a small amount of undissolved anatase titanium dioxide F,
By undissolved anatase titanium dioxide F, deionized water dissolving is carried out again, and a small amount of oxidant is added, and is stirred to abundant
Dissolution stands, obtains mixed solution G；
(4) mixed solution G is finally filtered operation, obtains pure Solution H and impurity I；
(5) pure solution B, E and H are mixed to and measured the mass fraction of Wastewater by Nanometer Anatase titanium dioxide, and is gone by addition
Ionized water adjusts the concentration and pH value of titanium dioxide, obtains photocatalyst product J.
2. a kind of photocatalyst preparation method and applications of catalytic degradation formaldehyde according to claim 1, which is characterized in that
The concentration of ammonium hydroxide is 5wt% in the step (1), and pH value is in 7-8.
3. a kind of photocatalyst preparation method and applications of catalytic degradation formaldehyde according to claim 1, which is characterized in that
In the step (2), the amount for adding citric acid is the 0.1-0.2% of mixed solution D, and the concentration of ammonium hydroxide is 5wt%, the pH of adjusting
Value is in 7-8.
4. a kind of photocatalyst preparation method and applications of catalytic degradation formaldehyde according to claim 1, which is characterized in that
In the step (3), oxidant 20wt%H2O2, dilute HNO3One or two, additive amount are the 0.1-0.2% of mixed solution.
5. a kind of photocatalyst preparation method and applications of catalytic degradation formaldehyde according to claim 1, which is characterized in that
In the step (5), adjusting the final concentration of titanium dioxide in 0.8-1.5% and pH value is 7-8.
6. a kind of photocatalyst preparation method and applications of catalytic degradation formaldehyde according to claim 1, which is characterized in that
Photocatalyst J is coated on substrate surface, forms film after to be dried by the photocatalyst product J application method, can be in effect of light
The pernicious gases such as lower PARA FORMALDEHYDE PRILLS(91,95) carry out catalytic degradation effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910674707.3A CN110420629A (en) | 2019-07-25 | 2019-07-25 | A kind of photocatalyst preparation method and applications of catalytic degradation formaldehyde |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910674707.3A CN110420629A (en) | 2019-07-25 | 2019-07-25 | A kind of photocatalyst preparation method and applications of catalytic degradation formaldehyde |
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| CN110420629A true CN110420629A (en) | 2019-11-08 |
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| CN201910674707.3A Pending CN110420629A (en) | 2019-07-25 | 2019-07-25 | A kind of photocatalyst preparation method and applications of catalytic degradation formaldehyde |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111792670A (en) * | 2020-06-22 | 2020-10-20 | 佛山欧神诺陶瓷有限公司 | Titanium dioxide photocatalyst, preparation method thereof and application thereof in ceramic tiles |
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|---|---|---|---|---|
| JP2005270876A (en) * | 2004-03-25 | 2005-10-06 | Ul Tran Technology & Service Corp | Synthetic method for titanium oxide photocatalyst |
| CN103293044A (en) * | 2013-06-26 | 2013-09-11 | 成都光明光电股份有限公司 | Dissolving method of high purity titanium dioxide |
| CN106512941A (en) * | 2016-11-30 | 2017-03-22 | 安吉云界生物科技有限公司 | Composite nanometer titanium dioxide and active carbon adsorbent |
| CN106512593A (en) * | 2016-11-25 | 2017-03-22 | 深圳市中建南方环境股份有限公司 | Photocatalyst high-efficiency filter |
-
2019
- 2019-07-25 CN CN201910674707.3A patent/CN110420629A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005270876A (en) * | 2004-03-25 | 2005-10-06 | Ul Tran Technology & Service Corp | Synthetic method for titanium oxide photocatalyst |
| CN103293044A (en) * | 2013-06-26 | 2013-09-11 | 成都光明光电股份有限公司 | Dissolving method of high purity titanium dioxide |
| CN106512593A (en) * | 2016-11-25 | 2017-03-22 | 深圳市中建南方环境股份有限公司 | Photocatalyst high-efficiency filter |
| CN106512941A (en) * | 2016-11-30 | 2017-03-22 | 安吉云界生物科技有限公司 | Composite nanometer titanium dioxide and active carbon adsorbent |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111792670A (en) * | 2020-06-22 | 2020-10-20 | 佛山欧神诺陶瓷有限公司 | Titanium dioxide photocatalyst, preparation method thereof and application thereof in ceramic tiles |
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