Preparation and characterization of Cu2O/TiO2 nano-nano heterostructure photocatalysts

被引：170

作者：

Huang, Lei ^{[1
,2
]}

Peng, Feng ^{[1
,2
]}

Wang, Hongjuan ^{[1
]}

Yu, Hao ^{[1
]}

Li, Zhong ^{[1
]}

机构：

[1] S China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510640, Peoples R China

[2] Fuzhou Univ, State Key Lab Breeding Base Photocatalysis, Fuzhou 350002, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2009年 / 10卷 / 14期

基金：

中国国家自然科学基金;

关键词：

Photocatalysis; Heterostructure; Cuprous oxide; Visible light irradiation; Titania; TIO2; HETEROJUNCTIONS; DEGRADATION; PARTICLES; FILM;

D O I：

10.1016/j.catcom.2009.06.011

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Cu2O/TiO2 nano-nano heterostructures with different concentrations of Cu2O were prepared by an alcohol-aqueous based chemical precipitation method, and were characterized by X-ray diffraction, transmission electron microscopy, scanning electron microscopy and UV-vis diffuse reflection absorption spectra. The photocatalytic efficiency of the Cu2O/TiO2 heterostructures was evaluated by degradation of Acid Orange 11 in water under UV-vis light and visible light irradiation. The results show that the heterostructures have dramatically improved photocatalytic activity comparing with pure TiO2 (P25). The prepared Cu2O/TiO2 heterostructures with the Cu2O concentrations of 30% and 70% have the best photocatalytic efficiencies, which are 6 times and 27 times higher than that of pure TiO2 (P25) under UV-vis light and visible light irradiation, respectively. (c) 2009 Elsevier B.V. All rights reserved.

引用

页码：1839 / 1843

页数：5

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