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Preparation method of CuInSe2 nanometer crystal-modified TiO2 nano-tube photoelectrode

A technology of nanocrystals and nanotubes, which is applied in the field of preparation of TiO2 nanotube photoelectrodes, can solve the problems of low photocatalytic efficiency of nanotube electrodes, and achieve the effects of improving photocatalytic performance, simple preparation process, and low production cost

Inactive Publication Date: 2018-05-01
苏州汉力新材料有限公司
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Problems solved by technology

However, TiO in the prior art 2 Photocatalytic efficiency of nanotube electrodes is still low

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  • Preparation method of CuInSe2 nanometer crystal-modified TiO2 nano-tube photoelectrode

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Embodiment Construction

[0020] The technical solutions in the embodiments of the present invention will be described in detail below, obviously, the described embodiments are only some of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0021] ginseng figure 1 As shown, a CuInSe in the present invention 2 Nanocrystalline modified TiO 2 A method for preparing a nanotube photoelectrode, comprising:

[0022] S1, the nano-TiO 2 The powder and KOH solution are mixed and reacted at 100-200°C for 10-20 hours, and then washed with deionized water and absolute ethanol in turn;

[0023] S2. Then bake the reaction product at 50-80°C for 1-3 hours to obtain TiO 2 nanotube;

[0024] S3, preparation of CuInSe 2 Nanocrystalline solution, CuCl and InCl 3 Add selenium to oley...

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Abstract

The invention discloses a preparation method of a CuInSe2 nanometer crystal-modified TiO2 nano-tube photoelectrode. The preparation method comprises: S1, mixing nanometer TiO2 powder and a KOH solution at a temperature of 100-200 DEG C, carrying out a reaction for 10-20 h, and washing sequentially with deionized water and acetone; S2, baking the reaction product for 1-3 h at a temperature of 50-80DEG C to obtain TiO2 nano-tubes; S3, preparing a CuInSe2 nanometer crystal solution, adding CuCl and InCl3 to oleylamine under a vacuum condition, adding selenium at a temperature of 200 DEG C, maintaining the reaction solution for 2 h at the temperature of 200 DEG C, heating to a temperature of 300 DEG C, cooling, adding toluene and deionized water, and separating the product to obtain a CuInSe2nanometer crystal solution; and S4, soaking the TiO2 nano-tubes in the CuInSe2 nanometer crystal solution, and baking to obtain the CuInSe2 nanometer crystal-modified TiO2 nano-tube photoelectrode. According to the present invention, the CuInSe2 nanometer crystal with controlled morphology and the controlled particle size are prepared on the TiO2 nano-tube photoelectrode, and the obtained CuInSe2nanometer crystal-modified TiO2 nano-tube photoelectrode can be widely applied in the photocatalytic decomposition of organic pollutants.

Description

technical field [0001] The invention relates to the technical field of semiconductor photocatalysts, in particular to a CuInSe 2 Nanocrystalline modified TiO 2 Preparation method of nanotube photoelectrode. Background technique [0002] With the development of the economy, water pollution is becoming more and more serious. Photocatalytic technology is a wastewater treatment technology developed in recent years. Photocatalyst is a substance that causes a catalytic reaction under light irradiation. Through the photocatalytic reaction, hydroxyl radicals and super oxygen ions with strong oxidizing ability are generated to degrade and decompose organic pollutants. [0003] Titanium dioxide (TiO 2 ) is one of the most extensive and deep semiconductor photocatalysts, widely used in the field of photocatalysis. But TiO 2 The band gap is wide, and it can only show photochemical activity in the ultraviolet region with a wavelength of less than 378nm. At the same time, its photoel...

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Application Information

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IPC IPC(8): C02F1/461C02F101/30
CPCC02F1/46109C02F2001/46142C02F2001/46152C02F2101/30
Inventor 徐伟
Owner 苏州汉力新材料有限公司
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