文献类型：期刊文献

英文题名：A P/N type compounded Cu2O/TiO2 photo-catalytic membrane for organic pollutant degradation

作者：Liu, Xuemei[1];Cao, Limei[1];Sun, Wei[1];Zhou, Zhenhua[1];Yang, Ji[1]

机构：[1]East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China

年份：2016

卷号：42

期号：7

起止页码：6289

外文期刊名：RESEARCH ON CHEMICAL INTERMEDIATES

收录：;EI(收录号：20160701910581);WOS:【SCI-EXPANDED(收录号:WOS:000385201000008)】；

基金：This research was based on work supported by the National Natural Science Foundation of China (21277045), the Public Welfare project of the Ministry of Environmental Protection (201309021), the "Shu Guang?" project of the Shanghai Municipal Education Commission and the Shanghai Education Development Foundation, and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Photo-catalyst; Photo-catalysis; Cu2O/TiO2 thin film; Wastewater

摘要：A heterojunction thin film consisting of n-type titanium dioxide (TiO2) and p-type cuprous oxide (Cu2O) was fabricated on an FTO conducting glass. The TiO2 films were grown on the FTO glass by sol-gel and spray pyrolysis methods, and Cu2O was deposited on it via the hydrothermal method. The morphology, crystalline structure, and optical absorption characteristics were studied by scanning electron microscopy, X-ray diffraction, and ultraviolet-visible diffuse reflectance spectrum, respectively. The results show that the surface of the Cu2O/TiO2 film was composed of net and large grains, which contributed to a large specific surface area. The crystal phase of the TiO2 in the Cu2O/TiO2 film remained anatase. The crystal phase of the Cu2O could not be detected as it is found in traces. The Cu2O/TiO2 film had a stronger optical absorption ability than the pure TiO2 film. To investigate catalytic activity, a photocatalytic degradation experiment of the Cu2O/TiO2 film was performed in a homemade thin-layer micro-reactor. The photocatalytic degradation of methylene blue increased with increasing amounts of deposited Cu2O until a maximum limit was reached. The photocatalytic activity might have declined with an increase in Cu2O content. The metallic oxide has the potential to screen other photocatalysts from the UV source.