Preparation of the Ti3+/TiO2 supported CuO catalyst and its photocatalytic performance in the degradation of toluene

被引：0

作者：

Zhou, Wen-Jun ^{[1
]}

Shen, Bo-Xiong ^{[1
]}

Zhang, Qin ^{[1
]}

Wang, Xin-Yi ^{[1
]}

Lu, Feng-Ju ^{[1
]}

机构：

[1] School of Energy & Environmental Engineering, Hebei University of Technology, Tianjin,300401, China

来源：

Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology | 2019年 / 47卷 / 02期

关键词：

Gas adsorption - Oxygen vacancies - Particle size - Titanium dioxide - Toluene;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The CuO-Ti3+/TiO2(Cu-TiMB) pholocatalyst was prepared by reducing TiO2 loaded with Cu-BTC (BTC, 1,3,5-benzoic acid) precursor; its photocatalytic performance in the removal of gaseous toluene was investigated. The result indicated that the toluene removal efficiency of CuO-Ti3+/TiO2(Cu-TiMB) by visible irradiation was 2.68 time higher than that of CuO-TiO2(Cu-TiD) prepared by impregnation. The CuO-Ti3+/TiO2(Cu-TiMB) catalyst shows relatively high surface area (147 m2/g), small particle size (0.45 μm), porous structure and high CuO dispersion; Ti3+ may provide a large number of oxygen vacancies, which can significantly enhance the photocatalytic response at 400-800 nm. In addition, Cu2+ and Cu+ may form heterogeneous structure with Ti3+, which can further increase the number of oxygen vacancies and delay the electron-hole pairs (e--h+) recombination time. The oxygen vacancies are effective in enhancing the ability for capturing adsorption oxygen, promoting the chemisorption ability by changing the valence state of metal oxides, and then improving the photocatalytic performance. © 2019, Science Press. All right reserved.

引用

页码：249 / 256