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Method for preparing nitrogen-doped modified TiO2 film under ammonia regulation and high pressure reaction device

A high-voltage reaction and nitrogen doping technology, which is applied in the fields of climate sustainability, electrical components, photosensitive equipment, etc., can solve the problem that the band gap is not easy to control, and achieve the effect of high conversion rate

Inactive Publication Date: 2007-08-29
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the invention is to solve the current problem of modified TiO 2 The problem that the bandgap width of the film is not easy to control, provides a nitrogen-doped modified TiO 2 Thin film preparation method and high pressure reaction device

Method used

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  • Method for preparing nitrogen-doped modified TiO2 film under ammonia regulation and high pressure reaction device
  • Method for preparing nitrogen-doped modified TiO2 film under ammonia regulation and high pressure reaction device
  • Method for preparing nitrogen-doped modified TiO2 film under ammonia regulation and high pressure reaction device

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specific Embodiment approach 1

[0011] Specific implementation mode 1: In this implementation mode, ammonia gas controls nitrogen-doped modified TiO 2 The steps of the preparation method of the film are as follows: 1. At room temperature and under the condition of stirring at a speed of 90-120r / min, add 20-50ml of isopropyl titanate dropwise to 100-200ml with a concentration of 0.08-0.15mol / L HCl or HNO 3 Mix in the solution and react for 30min~2h; 2. In a water bath at 50~90℃, stir the mixture at a speed of 90~120r / min, and react for 5~10h; 3. Filter the reaction solution after step 2 ; Four, add secondary distilled water in the above-mentioned filtrate, make TiO 2 The weight percent concentration of the solution is 2-10%; 5. React the reaction solution treated in step 4 for 10-15 hours in a water bath at 180-250° C.; 6. Distill the reaction solution treated in step 5 to make TiO 2 The weight percentage concentration of the solution is 5-15%, and the nano-TiO 2 Slurry; seven, nano-TiO 2 Add an emulsifier...

specific Embodiment approach 2

[0018] Specific embodiment two: In this embodiment, in step one, HCl or HNO 3 The concentration of the solution is 0.1mol / L. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0019]Embodiment 3: In this embodiment, a magnetic stirrer is used in step 1 and step 2. Others are the same as in the first embodiment.

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Abstract

This invention relates to a preparation method for ammonia controlled N doped modified TiO2 films and a high pressure reacting device including the following steps: 1, mixing a reactant, 2, bathing it, 3, filtering, 4, adding secondary distilled water, 5, bathing it, 6, processing a TiO2 nm serum, 7, adding emulsion agent into it and grinding it, 8, coating a film and sintering to get a TiO2 film, 9, penetrating ammonia of 99.99wt% and reacting for 5min-4h, in which, the top surface of a sleeve is fixedly connected with the top surface of a cover, a thermocouple is placed in the sleeve along the axial direction, the outlet of a connecting pipe is connected with the inlet of a gas meter, and the inlet of the pipe is connected with the outlet of the drum.

Description

technical field [0001] The present invention relates to a kind of TiO 2 A preparation method and a reaction device of a modified thin film. Background technique [0002] Dye-sensitized solar cells are a new type of solar cells newly developed in recent years, and one of the components is TiO 2 Thin film structure and conduction band energy level determine the overall performance of dye-sensitized solar cells. TiO 2 It is a wide bandgap semiconductor. Pure TiO 2 The light absorption range of powders and films is narrow, and only ultraviolet rays with energy greater than or equal to the forbidden band width can stimulate photocatalytic reactions, and ultraviolet rays only account for about 3-5% of the sun's natural light radiation; at the same time, electrons and holes are easy to recombine , the yield of carriers is low, which directly affects the efficiency and effect of photocatalysis. Therefore, people use various methods to expand the TiO 2 To utilize the range of ...

Claims

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Application Information

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IPC IPC(8): H01L31/18H01L51/40H01L21/28H01L21/208H01L21/223H01M14/00H01G9/20
CPCY02P70/50
Inventor 杨玉林王鑫吴婷
Owner HARBIN INST OF TECH
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