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a color adjustable tio 2 The preparation method of color thin film

A film and color technology, applied in the field of photocatalyst preparation, to achieve the effect of enhancing the degradation efficiency of visible light

Active Publication Date: 2016-12-28
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

TiO we currently get 2 The film has a variety of colors, and the range of absorbed light is extended to the visible light region, and the films of different colors have specific absorption in the visible light region, and have a color effect similar to that of butterfly wings. The currently reported TiO 2 Thin films rarely refer to this kind of color without any doping

Method used

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  • a color adjustable tio <sub>2</sub> The preparation method of color thin film
  • a color adjustable tio <sub>2</sub> The preparation method of color thin film
  • a color adjustable tio <sub>2</sub> The preparation method of color thin film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] At room temperature, add 0.008g of titanium tetrafluoride to 35mL of tert-butanol and 5mL of benzyl alcohol mixture, drop in 10uL (mass fraction 40%) of hydrofluoric acid, stir vigorously until titanium tetrafluoride is completely dissolved to form a transparent solution, Then transfer the solution to a 50mL polytetrafluoroethylene hydrothermal kettle, and then add the glass piece into the polytetrafluoroethylene hydrothermal kettle, keep it at 160°C for 48h, then cool it to room temperature naturally, and take out the TiO 2 The colored TiO2 can be obtained by ultrasonically cleaning the glass sheet of the colored film 2 film.

Embodiment 2

[0020] At room temperature, add 0.016g of titanium tetrafluoride to 35mL of tert-butanol and 5mL of benzyl alcohol mixture, drop into 5uL (mass fraction 40%) of hydrofluoric acid, stir vigorously until titanium tetrafluoride is completely dissolved to form a transparent solution, Then the solution was transferred to a 50mL polytetrafluoroethylene hydrothermal kettle, and then the Ti sheet was added into the polytetrafluoroethylene hydrothermal kettle, kept at 160°C for 24h, and then cooled to room temperature naturally, and the surface with TiO 2 Colored Ti sheet of thin film and ultrasonic cleaning to obtain colored TiO 2 film.

Embodiment 3

[0022] At room temperature, add 0.016g of titanium tetrafluoride to 35mL of tert-butanol and 5mL of benzyl alcohol mixture, drop into 10uL (mass fraction 40%) of hydrofluoric acid, stir vigorously until titanium tetrafluoride is completely dissolved to form a transparent solution, Then the solution was transferred to a 50mL polytetrafluoroethylene hydrothermal kettle, and then the Ti sheet was added into the polytetrafluoroethylene hydrothermal kettle and kept at 160°C for 24h, then naturally cooled to room temperature, and the surface was taken out. 2 Colored Ti sheet of thin film and ultrasonic cleaning to obtain colored TiO 2 film.

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Abstract

The invention discloses a preparation method of a TiO2 colorful film with an adjustable color. The preparation method specifically comprises the following steps: preparing a precursor solution formed by mixing TiF4 and an organic alcohol mixed solution according to a mass ratio of 1:1000-1:10000; adding hydrofluoric acid to the prepared precursor solution, mixing until the TiF4 is fully dissolved, then transferring to a polytetrafluoroethylene hydrothermal kettle, adding a substrate sheet to the polytetrafluoroethylene hydrothermal kettle, and performing alcohol heating at the temperature of 130-250 DEG C for 4-96 hours so that TiO2 films with different colors can be obtained. According to the preparation method, by optimizing raw material components and controlling the solvothermal time and the temperature, the TiO2 films with different colors can be prepared on different substrates, the colorful TiO2 film is capable of enlarging the absorbent light range of TiO2 to a visible light region, and has a specific light absorption; visible light of a certain wave band can be selectively absorbed, and the degradation efficiency of the TiO2 film to the visible light of a dye can be effectively enhanced.

Description

technical field [0001] The invention relates to a method for preparing a photocatalyst, specifically a color-tunable TiO 2 The preparation method of color thin film. Background technique [0002] TiO 2 Thin films have attracted widespread attention due to their important applications in fields such as solar cells and catalysis. Compared to TiO 2 It is difficult to separate and recover the powder during use, TiO 2 Films have the advantages of being easy to recycle, reusable, and resource-saving. TiO we currently get 2 The film has a variety of colors, and the range of absorbed light is extended to the visible light region, and the films of different colors have specific absorption in the visible light region, and have a color effect similar to that of butterfly wings. The currently reported TiO 2 Thin films rarely mention this kind of color without doping any substances. [0003] The non-aqueous solvothermal method has unique advantages in controlling the shape and siz...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/06B01J35/10
Inventor 朱建李晓婷吕伏建王研科周晓丽李和兴
Owner SHANGHAI NORMAL UNIVERSITY