CN103861578A - Rare earth doped nanometer TiO2 photocatalyst emulsion - Google Patents
Rare earth doped nanometer TiO2 photocatalyst emulsion Download PDFInfo
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- CN103861578A CN103861578A CN201210547855.7A CN201210547855A CN103861578A CN 103861578 A CN103861578 A CN 103861578A CN 201210547855 A CN201210547855 A CN 201210547855A CN 103861578 A CN103861578 A CN 103861578A
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Abstract
The invention relates to a rare earth doped nanometer TiO2 photocatalyst emulsion, and belongs to the technical field of photocatalyst materials. Firstly, a rear earth salt and a titanate are dissolved, and are reacted with ammonia water for forming a hydroxide precipitation, through calcining, a rare earth doped nanometer TiO2 powder is prepared, then a film forming agent and an emulsifier are added, so that the rare earth doped nanometer TiO2 photocatalyst emulsion is prepared. After the photocatalyst emulsion is doped with rear earth, the photocatalyst is capable of widening the spectrum response region, sunshine can be directly utilized for realizing degradation of organic pollutants such as formaldehyde, benzene, bacteria and the like, and the photocatalysis efficiency is improved. Also, the preparation technology of the photocatalyst emulsion is simple and convenient for industrialized production.
Description
Technical field
The invention belongs to catalysis material technical field, be specifically related to a kind of rare earth mixing with nano TiO
2photo-catalytic emulsion.
Background technology
Nano photo-catalytic is a kind of with nano-TiO
2for the nano level metal oxide materials of representative, under the effect of light, nano photo-catalytic can produce strong catalytic degradation function, and the airborne pernicious gas of effectively degrading, can effectively kill various bacteria, also possesses the function such as deodorizing, anti-soil simultaneously.But nano-TiO
2there are problems, limited the application of its reality, due to TiO
2it is wide bandgap semiconductor compound, only have the shorter solar energy of wavelength (λ < 387nm) just can be absorbed, and this part ultraviolet ray (300～400nm) only accounts for and reach 4%～6% of solar energy on ground, solar energy utilization ratio is very low; On the other hand, be subject to hole and electronics that optical excitation forms to be easy to compoundly, reduced photo-quantum efficiency.Therefore, shorten energy gap and make nano-TiO
2having visible light activity becomes study hotspot, the normal method that adopts doping.
At TiO
2the rare earth element that middle doping is suitable, can be at TiO
2between the valence band of band structure and conduction band, form a defect energy state, defect energy state may be near valence band, and also possibility is near conduction band.Defect energy state, for light induced electron provides a springboard, can utilize the excited by visible light electronics that energy is lower, be transferred in two steps conduction band, thereby the optical absorption edge of vitalizing semiconductor moves by valence band to visible ray.Rare earth metal has unique 4f subgrade electronic structure, almost can react with all elements, forms the compound of multivalence state, polygamy figure place, has the characteristic such as optical, electrical, magnetic of many excellences.
Rare-earth cerium doped photocatalyst is had to certain research both at home and abroad.Application number is that the patent of invention of 200710061876.7200810079599.7 has been announced a kind of metallic ion doped nano TiO
2transparent photo-catalytic emulsion and preparation method thereof, the patent of invention that application number is 200810079599.7 has been announced a kind of composite metal ion doped nano-TiO
2photocatalyst transparency emulsion and preparation method, all adopt cerium to nano-TiO
2photocatalyst has been prepared in doping.But at present to other rare earth ion doped nano-TiOs
2photocatalyst research is less.
Given this, the present invention proposes a kind of rare earth mixing with nano TiO
2photo-catalytic emulsion, adopts multiple rare earth element to nano-TiO
2carry out doping vario-property, prepare photo-catalytic emulsion.
Summary of the invention
The object of the present invention is to provide a kind of rare earth mixing with nano TiO
2photo-catalytic emulsion.Through multiple rare earth doped after, photocatalyst can be widened spectral response interval, improves photocatalysis effect under solar radiation.
In order to realize above-mentioned object, the technical solution used in the present invention is:
A kind of rare earth mixing with nano TiO provided by the invention
2photo-catalytic emulsion, preparation process comprises:
(1) titanium salt and rare-earth salts are successively added in deionized water and dissolved, cross and filter to remove impurity;
(2) in the solution of step (1), drip alkali lye, form the muddy colloidal solution of titanium hydroxide and rare-earth hydroxide;
(3) the muddy colloidal solution of step (2) is filtered, obtain mixed hydroxides, deionized water cyclic washing, filters, and dries, and obtains mixed hydroxides powder;
(4) the mixed hydroxides powder of step (3) is moved in Muffle furnace, calcining, obtains rare earth mixing with nano TiO
2powder.
(5) rare earth mixing with nano TiO step (4) being made
2powder adds in deionized water, then to add appropriate film forming agent and emulsifying agent, temperature be 50～100 DEG C, and strong agitation is fully disperseed, and makes rare earth mixing with nano TiO
2photo-catalytic emulsion.
Preferably, described titanium salt is the one of titanyl sulfate, titanium tetrachloride.
Preferably, described rare-earth salts is one or more mixture of cerous nitrate, lanthanum nitrate, yttrium nitrate, neodymium nitrate, samaric nitrate, cerium chloride, lanthanum chloride, yttrium chloride, neodymium chloride, samarium trichloride.
Preferably, 0.5～5% (molar percentage) that the addition of described rare-earth salts is titanium salt.
Preferably, described alkali lye is ammoniacal liquor.
Preferably, described strong oxidizer is hydrogen peroxide.
The beneficial effect that the present invention has:
The present invention relates to a kind of rare earth mixing with nano TiO
2photo-catalytic emulsion.After rear-earth-doped, photocatalyst can be widened spectral response interval, can directly utilize sunshine or fluorescent lamp, realizes the degraded of the organic pollutions such as PARA FORMALDEHYDE PRILLS(91,95), benzene, bacterium, has improved photocatalysis efficiency.Photo-catalytic emulsion preparation technology is simple, is convenient to suitability for industrialized production.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described, but do not limit protection scope of the present invention.
Embodiment 1
Titanium tetrachloride and rare earth lanthanum nitrate are added in deionized water and dissolved, cross and filter to remove impurity, in solution, drip ammoniacal liquor, form the muddy colloidal solution of titanium hydroxide and lanthanum hydroxide, filter, deionized water cyclic washing, dry, obtain mixed hydroxides powder, powder is moved in Muffle furnace, calcining, obtains rear earth lanthanum doping nano-TiO
2powder.By the rear earth lanthanum doping nano-TiO making
2powder adds in deionized water, then adds appropriate film forming agent and emulsifying agent, makes rare earth mixing with nano TiO
2photo-catalytic emulsion.
Embodiment 2
Titanyl sulfate and rare earth yttrium nitrate are added in deionized water and dissolved, cross and filter to remove impurity, in solution, drip ammoniacal liquor, form the muddy colloidal solution of titanium hydroxide and yttrium hydroxide, filter, deionized water cyclic washing, dry, obtain mixed hydroxides powder, powder is moved in Muffle furnace, calcining, obtains rare earth Yt doped nano-TiO
2powder.By the rare earth Yt doped nano-TiO making
2powder adds in deionized water, then adds appropriate film forming agent and emulsifying agent, makes rare earth mixing with nano TiO
2photo-catalytic emulsion.
The above is only preferred embodiment of the present invention.Any simple modification, equivalent variations and modification that every foundation technical spirit of the present invention is done above embodiment, all still belong in the scope of technical scheme of the present invention.
Claims (4)
1. a rare earth mixing with nano TiO
2photo-catalytic emulsion, is characterized in that preparation process comprises:
(1) titanium salt and rare-earth salts are successively added in deionized water and dissolved, cross and filter to remove impurity;
(2) in the solution of step (1), drip ammoniacal liquor, form the muddy colloidal solution of titanium hydroxide and rare-earth hydroxide;
(3) the muddy colloidal solution of step (2) is filtered, obtain mixed hydroxides, deionized water cyclic washing, filters, and dries, and obtains mixed hydroxides powder;
(4) the mixed hydroxides powder of step (3) is moved in Muffle furnace, calcining, obtains rare earth mixing with nano TiO
2powder.
(5) rare earth mixing with nano TiO step (4) being made
2powder adds in deionized water, then to add appropriate film forming agent and emulsifying agent, temperature be 50～100 DEG C, and strong agitation is fully disperseed, and makes rare earth mixing with nano TiO
2photo-catalytic emulsion.
2. rare earth mixing with nano TiO according to claim 1
2photo-catalytic emulsion, is characterized in that described titanium salt is the one of titanyl sulfate, titanium tetrachloride.
3. rare earth mixing with nano TiO according to claim 1
2photo-catalytic emulsion, is characterized in that described rare-earth salts is one or more mixture of cerous nitrate, lanthanum nitrate, yttrium nitrate, neodymium nitrate, samaric nitrate, cerium chloride, lanthanum chloride, yttrium chloride, neodymium chloride, samarium trichloride.
4. according to the rare earth mixing with nano TiO described in claim 1 and 3
2photo-catalytic emulsion, 0.5～5% (molar percentage) that the addition that it is characterized in that described rare-earth salts is titanium salt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210547855.7A CN103861578A (en) | 2012-12-17 | 2012-12-17 | Rare earth doped nanometer TiO2 photocatalyst emulsion |
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| CN201210547855.7A CN103861578A (en) | 2012-12-17 | 2012-12-17 | Rare earth doped nanometer TiO2 photocatalyst emulsion |
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| CN105597726A (en) * | 2014-11-18 | 2016-05-25 | 天津发洋环保科技有限公司 | Composite photocatalyst hydrosol |
| CN105797705A (en) * | 2014-12-28 | 2016-07-27 | 天津发洋环保科技有限公司 | Preparation method of lightweight efficient load-type photocatalyst for air purifier |
| CN107488370A (en) * | 2017-09-25 | 2017-12-19 | 深圳飞阳环保科技有限公司 | The preparation method and metal ion Cleaning luminaire of a kind of new type purification material |
| CN108906026A (en) * | 2018-08-07 | 2018-11-30 | 吉林大学 | Lanthanum cerium codoping titanium oxide material and preparation method based on mischmetal carbonate |
| CN109865511A (en) * | 2017-12-04 | 2019-06-11 | 天津发洋环保科技有限公司 | A kind of preparation method of doped nano photo-catalytic emulsion |
| CN109876805A (en) * | 2017-12-06 | 2019-06-14 | 天津发洋环保科技有限公司 | A kind of Ag doping TiO2The preparation method of nano photo-catalytic |
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| CN115475611A (en) * | 2021-05-31 | 2022-12-16 | 立邦涂料（中国）有限公司 | Rare earth coated nano photocatalyst, anti-disease bacterium composition, preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597726A (en) * | 2014-11-18 | 2016-05-25 | 天津发洋环保科技有限公司 | Composite photocatalyst hydrosol |
| CN105797705A (en) * | 2014-12-28 | 2016-07-27 | 天津发洋环保科技有限公司 | Preparation method of lightweight efficient load-type photocatalyst for air purifier |
| CN107488370A (en) * | 2017-09-25 | 2017-12-19 | 深圳飞阳环保科技有限公司 | The preparation method and metal ion Cleaning luminaire of a kind of new type purification material |
| CN109865511A (en) * | 2017-12-04 | 2019-06-11 | 天津发洋环保科技有限公司 | A kind of preparation method of doped nano photo-catalytic emulsion |
| CN109876805A (en) * | 2017-12-06 | 2019-06-14 | 天津发洋环保科技有限公司 | A kind of Ag doping TiO2The preparation method of nano photo-catalytic |
| CN108906026A (en) * | 2018-08-07 | 2018-11-30 | 吉林大学 | Lanthanum cerium codoping titanium oxide material and preparation method based on mischmetal carbonate |
| CN108906026B (en) * | 2018-08-07 | 2021-04-16 | 吉林大学 | Lanthanum-cerium co-doped titanium oxide material based on mixed rare earth carbonate and preparation method thereof |
| CN111214951A (en) * | 2020-02-28 | 2020-06-02 | 山东锦程地毯有限公司 | Floor mat with toxic gas removal function and preparation method thereof |
| CN115475611A (en) * | 2021-05-31 | 2022-12-16 | 立邦涂料（中国）有限公司 | Rare earth coated nano photocatalyst, anti-disease bacterium composition, preparation method and application thereof |
| CN115475611B (en) * | 2021-05-31 | 2023-09-15 | 立邦涂料（中国）有限公司 | Antibacterial composition and preparation method and application thereof |
| CN115352148A (en) * | 2022-10-17 | 2022-11-18 | 宁波时代铝箔科技股份有限公司 | Separable packaging material, preparation method thereof and packaging container |
| CN115352148B (en) * | 2022-10-17 | 2023-03-24 | 宁波时代铝箔科技股份有限公司 | Separable packaging material, preparation method thereof and packaging container |
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Application publication date: 20140618 |