文献类型：期刊文献

英文题名：α-Fe2O3/Ti-Nb-Zr-O composite photoanode for enhanced photoelectrochemical water splitting

作者：Liu, Qiang[1];Ding, Dongyan[1];Ning, Congqin[2];Wang, Xuewu[3]

机构：[1]Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Inst Microelect Mat & Technol, Shanghai 200240, Peoples R China;[2]Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China;[3]E China Univ Sci & Technol, Sch Informat Sci & Engn, Shanghai 200237, Peoples R China

年份：2015

卷号：196

起止页码：15

外文期刊名：MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS

收录：;EI(收录号：20151100628089);WOS:【SCI-EXPANDED(收录号:WOS:000353094500003)】；

基金：This work was supported by Shanghai Pujiang Program (No. 07pj14047). We thank the contribution from SEM and XPS lab at Instrumental Analysis Center of SJTU.

语种：英文

外文关键词：Hematite; Ti-Nb-Zr-O; Nanotube arrays; Composite; Photocatalytic water splitting

摘要：Surface modification and doping of titanium dioxide (TiO2) nanotubes are efficient ways to obtain improved photosensitive characteristics. Here we report photocatalytic activity of alpha-Fe2O3 decorated Ti-Nb-Zr-O nanotube arrays. The Ti-Nb-Zr-O nanotube arrays were fabricated through anodization of Ti-Nb-Zr alloy in electrolytes of 1 M NaH2PO4 containing 0.5 wt% HF. X-ray diffraction (XRD), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) were used to characterize the heterojunction nanofilms. Nb- and Zr-doping could enhance the photocatalytic properties of the titanium oxide. However, more Zr-doping could lead to many defects that acted as recombination centers, which reduced the photocatalytic activity of the titanium oxide. The photocurrent density of the Ti-Nb-Zr-O nanotube photoanodes decorated with a small quantity of alpha-Fe2O3 could exhibit three times as high as that of the undoped TiO2 nanotube photoanodes. (c) 2015 Elsevier B.V. All rights