Controllable preparation and improved performance of TiO2 photocatalysts with various structures

被引：14

作者：

He, Yu ^{[1
,2
]}

He, Qiangrui ^{[1
,2
]}

Liu, Zhihan ^{[1
,2
]}

Wang, Oumin ^{[1
,2
]}

Guli, Mina ^{[1
,2
]}

机构：

[1] North China Elect Power Univ, Beijing Key Lab Energy Safety & Clean Utilizat, Beijing, Peoples R China

[2] North China Elect Power Univ, Sch Renewable Energy, Beijing Key Lab Novel Thin Film Solar Cells, Beijing, Peoples R China

来源：

MATERIALS TECHNOLOGY | 2020年 / 35卷 / 01期

基金：

中国国家自然科学基金;

关键词：

TiO2; photocatalysis; hydrothermal method; spheres; nanorod; shuttle shape; TITANIUM-DIOXIDE; CO2; OXIDATION; FILMS; WATER;

D O I：

10.1080/10667857.2019.1644038

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

TiO2 has been widely accepted in various photocatalysts due to its low cost, high stability, structural robustness and non-toxicity. Hydrothermal method was used to prepare TiO2 photocatalysts with different morphology, structure and crystal morphology, including three-dimensional TiO2 spheres, shuttle-shaped TiO2, one-dimensional nanorod TiO2 and nanotube TiO2 films. The photocatalytic degradation of methylene blue by titanium dioxide with five different morphologies under white light was characterized by scanning electron microscope, X-ray diffraction, fourier transform infrared spectroscopy and ultraviolet visible light absorption spectroscopy, and the effects of morphology, structure and crystal type on TiO2 performance were analyzed. The preparation methods of titanium dioxide photocatalyst with good properties were compared. It is proven that higher crystallinity, small particle size, larger specific surface area, higher absorbance and a certain proportion of mixed crystal phase are beneficial to obtain better photocatalytic performance.

引用

页码：1 / 10

页数：10

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