Preparation method of TiO2/Ce-BaTiO3 composite thin film material for degrading rhodamine B through photoelectrocatalysis

A ce-batio3, composite thin film technology, applied in the field of photoelectric catalytic thin film material preparation, can solve the problems of reduced conduction band, unsatisfactory visible light utilization efficiency, etc., achieves simple and easy operation of preparation method, widened visible light absorption range, and overall cost low cost effect

Active Publication Date: 2021-07-09
TIANJIN CHENGJIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But BaTiO 3 The utilization efficiency of visible light is still unsatisfactory, while the incorporation of Ce can effectively tune BaTiO 3 Fermi level, lower the position of the conduction band, broaden the range of light absorption, and improve the TiO 2 Catalytic Efficiency of Composite Thin Films

Method used

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  • Preparation method of TiO2/Ce-BaTiO3 composite thin film material for degrading rhodamine B through photoelectrocatalysis

Examples

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Effect test

Embodiment 1

[0018] A kind of TiO for photoelectrocatalytic degradation of Rhodamine B 2 / Ce-BaTiO 3 The preparation method of composite film material, comprises the steps:

[0019] (1) After mixing 10mL of dilute hydrochloric acid and deionized water at a ratio of 1:1, drop 0.5mL of tetrabutyl titanate solution into the mixture and stir evenly, and place the FTO conductive glass with the conductive side facing down. Put it into the liner of the reaction kettle that has been added with the reaction liquid, and after hydrothermal reaction at 160° C. for 18 hours, dry the reacted sample. Then put the sample in the crucible, transfer it to the muffle furnace for annealing treatment at 500°C for 2 hours, and obtain the rod-shaped TiO attached to the FTO conductive glass. 2 film.

[0020] (2) Add 5 mL of diethylene glycol, 5 mL of isopropanol, and 3 mL of tetrabutylammonium hydroxide solution into 5 mL of deionized water to prepare a mixed solvent, and dissolve 0.5 mM octahydrate barium hydr...

Embodiment 2

[0022] A kind of TiO for photoelectrocatalytic degradation of Rhodamine B 2 / Ce-BaTiO 3 The preparation method of composite film material, comprises the steps:

[0023] (1) After mixing 10mL of dilute hydrochloric acid and deionized water at a ratio of 1:1, drop 0.8mL of tetrabutyl titanate solution into the mixture and stir evenly, and place the FTO conductive glass with the conductive side facing down. Put it into the liner of the reaction kettle that has been added with the reaction liquid, and after hydrothermal reaction at 180° C. for 16 hours, dry the reacted sample. Then put the sample into the crucible, transfer it to the muffle furnace for annealing treatment at 550°C for 2 hours, and obtain the rod-shaped TiO attached to the FTO conductive glass. 2 film.

[0024] (2) Add 5mL diethylene glycol, 5mL isopropanol, and 3mL tetrabutylammonium hydroxide solution into 5mL deionized water to prepare a mixed solvent, and dissolve 0.5mM octahydrate barium hydroxide and 0.025...

Embodiment 3

[0026] A kind of TiO for photoelectrocatalytic degradation of Rhodamine B 2 / Ce-BaTiO 3 The preparation method of composite film material, comprises the steps:

[0027] (1) After mixing 10mL dilute hydrochloric acid and deionized water at a ratio of 1:1, drop 1.0mL tetrabutyl titanate solution into the mixture and stir evenly, and place the FTO conductive glass with the conductive side facing down. Put it into the liner of the reaction kettle that has been added with the reaction solution, and after hydrothermal reaction at 180°C for 20 hours, dry the reacted sample. Then put the sample into the crucible, transfer it to the muffle furnace for annealing treatment at 600°C for 2 hours, and obtain the rod-shaped TiO attached to the FTO conductive glass. 2 film.

[0028] (2) Add 5mL diethylene glycol, 5mL isopropanol, and 3mL tetrabutylammonium hydroxide solution into 5mL deionized water to prepare a mixed solvent, and dissolve 0.5mM octahydrate barium hydroxide and 0.01mM ceri...

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Abstract

The invention discloses a preparation method of a TiO2 / Ce-BaTiO3 composite thin film material for degrading rhodamine B through photoelectrocatalysis. The method comprises the following steps of firstly, preparing a TiO2 thin film by adopting a hydrothermal method, then taking the TiO2 thin film as a reaction substrate, and carrying out in-situ conversion by adopting the hydrothermal method to load Ce-doped BaTiO3 nanocrystals onto the TiO2 thin film, so as to finally obtain the Ce-doped TiO2 / Ce-BaTiO3 composite thin film material. According to the prepared composite thin film material, the visible light absorption and carrier separation efficiency of TiO2 is improved, the improvement of the photoelectrocatalysis performance is promoted, the preparation method is simple and easy to operate, and the overall cost is low.

Description

technical field [0001] The invention belongs to the technical field of preparation of photoelectrocatalytic thin film materials, in particular to a kind of TiO used for photocatalytic degradation of Rhodamine B 2 / Ce-BaTiO 3 Preparation method of composite thin film material. Background technique [0002] In today's society, environmental and energy issues have attracted more and more attention. With the continuous development of industry, the random discharge of industrial wastewater has led to increasingly serious water and air pollution, which poses a huge threat to human health. Therefore, there is an urgent need to find an efficient catalyst for the degradation of pollutants for environmental governance. Titanium dioxide (TiO 2 ) Since photocatalytic water splitting on the electrode, due to the unique performance in solar energy conversion and catalytic degradation, while TiO 2 Inexpensive, non-toxic, harmless, and stable chemical properties make it the most tradit...

Claims

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Application Information

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IPC IPC(8): B01J21/06B01J23/10B01J35/00B01J35/06C02F1/30C02F101/30
CPCB01J21/063B01J23/10C02F1/30C02F2305/10C02F2101/308B01J35/33B01J35/59B01J35/39Y02W10/37
Inventor 刘志锋乔祯祥
Owner TIANJIN CHENGJIAN UNIV
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