Enhanced UV-Vis photocatalytic performance of the CuInS2/TiO2/SnO2 hetero-structure for air decontamination

被引：37

作者：

Enesca, Alexandru ^{[1
]}

Yamaguchi, Yuichi ^{[2
]}

Terashima, Chiaki ^{[2
]}

Fujishima, Akira ^{[2
]}

Nakata, Kazuya ^{[2
]}

Duta, Anca ^{[1
]}

机构：

[1] Transilvania Univ Brasov, R&D Inst, Ctr Renewable Energy Syst & Recycling, Eroilor 29 St, Brasov 500036, Romania

[2] Tokyo Univ Sci, 2641 Yamazaki, Noda, Chiba 2788510, Japan

来源：

JOURNAL OF CATALYSIS | 2017年 / 350卷

基金：

日本学术振兴会;

关键词：

Photocatalysis; Photoactive heterostructures; Acetaldehyde; Thin film; THIN-FILMS; SNO2; MICROSPHERES; TIO2; ACETALDEHYDE; ZNO; DEGRADATION; GROWTH; WO3; NANOPARTICLES; TEMPERATURE;

D O I：

10.1016/j.jcat.2017.02.015

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：

Photoactive hetero-structures based on SnO2, TiO2 and CuInS2 were prepared by robotic spray pyrolysis with optimized deposition parameters. The samples containing metal oxides have uniform and homogeneous surfaces with granular morphologies. The insertion of a CuInS2 layer supports the development of aggregates with different shapes and sizes (0.1-1 mu m). The samples have a surface energy governed by the polar component, outlining the hydrophilic behaviour. According to their band gap, the metal oxides layers absorb mostly in the UV spectral region; by adding the narrow band gap CuInS2 there is a broadening of the spectral range towards Vis, from a maximum of 400 nm (for the samples containing SnO2 and TiO2) up to 700 nm. Additionally, the components of the photoactive hetero-structure have suitably positioned energy bands allowing improved charge carrier separation and mobility. Consequently, the samples show UV-Vis photocatalytic properties outlined in air decontamination, for acetaldehyde removal. (C) 2017 Elsevier Inc. All rights reserved.

引用

页码：174 / 181

页数：8

共 56 条

[1] Preparation and characterization of ZnO-SiO2 thin films as highly efficient photocatalyst [J].