CN1193117C - Process for preparing optically catalytic TiO2 film - Google Patents
Process for preparing optically catalytic TiO2 film Download PDFInfo
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- CN1193117C CN1193117C CNB011128968A CN01112896A CN1193117C CN 1193117 C CN1193117 C CN 1193117C CN B011128968 A CNB011128968 A CN B011128968A CN 01112896 A CN01112896 A CN 01112896A CN 1193117 C CN1193117 C CN 1193117C
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- titanium
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- optically catalytic
- titanium dioxide
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Abstract
The present invention discloses a preparation method for a titanium dioxide photocatalysis film, particularly a preparation method for a titanium dioxide photocatalysis film with a nanometer crystal structure. The present invention uses a commercial pure titanium plate or titanium foil which is placed in a dielectric solution as an electrode of an electrolytic cell and uses the other titanium plate as a counter electrode; an amorphous state titanium dioxide film growing on titanium base material is obtained by electrochemical oxidation processing; then, heating crystallization processing is carried out to obtain the titanium dioxide photocatalysis film with the nanometer crystal structure. The present invention has the advantages of simple manufacturing process, low cost, no dimensional limit, good uniformity and high catalytic activity.
Description
The present invention relates to a kind of preparation method of optically catalytic TiO 2 film, particularly have the optically catalytic TiO 2 film preparation method of nanocrystalline structure.
The existing method for preparing optically catalytic TiO 2 film, adopt the method for physical chemistry vapour deposition, collosol and gel mostly, as Dong Hao, Zhang Yongxi etc. " the gravity flow reaction magnetocontrol sputtering prepares the photocatalytic research of titanium deoxid film ", " vacuum science and technology ", in July, 2000; Xu Mingxia, Xu Tingxian, Liu Ning are " by TiOSO
4Hydrosphere-precipitation preparation TiO
2Film ", " silicate journal ", in April, 1997.Though these methods also can prepare optically catalytic TiO 2 film, also exist the lack of homogeneity of preparation cost height, size-constrained system, film and the deficiency that is difficult to serialization production.
The purpose of this invention is to provide a kind of preparation method of optically catalytic TiO 2 film, it has nanocrystalline structure, and catalytic activity height, technology are simple, low cost of manufacture, be not subjected to the advantage of the good uniformity of limitation of size and film.
For achieving the above object, the present invention is achieved in that with industrially pure titanium plate or titanium foil and places the electrode of dielectric solution as electrolyzer, make counter electrode with another titanium plate, perfectly straight stream or alternating-current, control voltage and solution temperature, and keep certain hour carry out electrochemical oxidation and handle the back and obtain to be grown in amorphous titanium dioxide film on the titanium base material, carry out the heating crystallization of controlled temperature and time then and handle, obtain the optically catalytic TiO 2 film of nanocrystalline structure.
The present invention is owing to adopt above-mentioned electrochemical method, makes the technology of preparation optically catalytic TiO 2 film simple, low cost of manufacture and be not subjected to limitation of size, and can realize serialization production; The prepared optically catalytic TiO 2 film that goes out is a nanocrystalline structure, has homogeneity and advantages of high catalytic activity preferably, can be developed further into the green building material of making air, water purifier, antibiotic sanitary ware and having the environment purification function.In addition, prepared optically catalytic TiO 2 film is to be grown directly upon on metallic titanium plate or the titanium foil, compare when using with powder titanium dioxide photocatalyst material photocatalyst, having is difficult for reuniting reaches the advantage that does not need to be fixed in again on other carrier, more helps further making the light catalytic purifying device.
Provide embodiments of the invention and preparation flow block diagram below, and be described further:
Fig. 1 is a preparation flow block diagram of the present invention.
By shown in Figure 1, industrially pure titanium plate or titanium foil 1 are after the cleanser 2 that deoils cleans, put into the electrolyzer 3 of temperature controllable, solution in the electrolyzer 3 is made up of sodium phosphate aqueous solution, sodium phosphate concentration is 30-60wt%, solution temperature is controlled at 20-40 ℃, adding one between titanium plate or titanium foil 1 and counter electrode exchanges or volts DS (during as logical direct current, make anode with processed titanium plate or titanium foil 1, make negative electrode with Stainless Steel or other inert metal), voltage control is at 50-80V, after keeping 5 minutes-2 hours, outage is taken out with tap water and is cleaned, and through seasoning, puts into process furnace 4 again and carries out crystallization and thermal treatment, the temperature of control process furnace 4 is at 150-300 ℃, be incubated 5-10 hour, take out naturally cooling in air, can obtain optically catalytic TiO 2 film.Prepared optically catalytic TiO 2 film, phase structure is anatase octahedrite phase or anatase octahedrite and rutile mixed phase, heating and temperature control when its phase structure can be handled by crystallization, can obtain anatase octahedrite and rutile mixed phase during temperature drift, can obtain pure anatase octahedrite phase when temperature is on the low side, its crystal grain diameter belongs to nanocrystalline structure in the 1-20 nanometer.Above-mentioned comparatively ideal parameter is: sodium phosphate concentration is 40wt%, and solution temperature is controlled at 40 ℃, adds 80V voltage between titanium plate or titanium foil 1 and counter electrode, and through keeping 1 hour, the temperature of control process furnace 4 is incubated 10 hours at 200 ℃.
Claims (2)
1, a kind of preparation method of optically catalytic TiO 2 film, comprise the cleanser that deoils (2), electrolyzer (3), process furnace (4), it is characterized in that: industrially pure titanium plate or titanium foil (1) are after the cleanser that deoils (2) cleans, put into electrolyzer (3), solution in the electrolyzer (3) is made up of sodium phosphate aqueous solution, sodium phosphate concentration is 30-50wt%, solution temperature is controlled at 20-40 ℃, between titanium plate or titanium foil (1) and counter electrode, add 50-80V voltage, after keeping 5 minutes-2 hours, the taking-up water cleans, through seasoning, to put into process furnace (4) again and carry out crystallization and thermal treatment, the temperature of control process furnace (4) is at 150-300 ℃, be incubated 5-10 hour, take out naturally cooling in air.
2, according to the preparation method of the described a kind of optically catalytic TiO 2 film of claim 1, it is characterized in that: sodium phosphate concentration is 40wt%, solution temperature is controlled at 40 ℃, between titanium plate or titanium foil (1) and counter electrode, add 80V voltage, through keeping 1 hour, the temperature of control process furnace (4) is incubated 10 hours at 200 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011128968A CN1193117C (en) | 2001-05-17 | 2001-05-17 | Process for preparing optically catalytic TiO2 film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011128968A CN1193117C (en) | 2001-05-17 | 2001-05-17 | Process for preparing optically catalytic TiO2 film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1386916A CN1386916A (en) | 2002-12-25 |
| CN1193117C true CN1193117C (en) | 2005-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011128968A Expired - Fee Related CN1193117C (en) | 2001-05-17 | 2001-05-17 | Process for preparing optically catalytic TiO2 film |
Country Status (1)
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| CN (1) | CN1193117C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332065C (en) * | 2005-01-24 | 2007-08-15 | 武汉大学 | Production of quantum point nanometer titanium dioxide composite membrane |
| JP3795515B1 (en) * | 2005-08-10 | 2006-07-12 | 善典 中川 | Manufacturing method of semiconductor photoelectrochemical cell |
| CN100441288C (en) * | 2006-07-28 | 2008-12-10 | 汪洋 | Method for treating waste gas by using metal thin film adsorption and desorption |
| CN101660189B (en) * | 2008-08-28 | 2011-02-09 | 中国科学院合肥物质科学研究院 | Branch controllable titanium dioxide nanotube array thin film and preparation method thereof |
| CN101950630B (en) * | 2010-07-01 | 2012-01-04 | 东华大学 | Preparation method for electrode with anatase titanium dioxide nanofibre membrane |
| CN102864481B (en) * | 2012-09-18 | 2015-04-15 | 中国科学院宁波材料技术与工程研究所 | Titanium dioxide photo-catalyzed film and preparation method thereof |
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2001
- 2001-05-17 CN CNB011128968A patent/CN1193117C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1386916A (en) | 2002-12-25 |
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