文献类型：期刊文献

英文题名：Reduced N/Ni-doped TiO2 nanotubes photoanodes for 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 Elect 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：5

期号：116

起止页码：95478

外文期刊名：RSC ADVANCES

收录：;EI(收录号：20154701564916);WOS:【SCI-EXPANDED(收录号:WOS:000364907300010)】；

基金：This work was supported by Shanghai Pujiang Program (No. 07pj14047) and National Natural Science Foundation of China (No. 51572170). We thank the contribution from SEM and XPS lab at Instrumental Analysis Center of SJTU.

语种：英文

外文关键词：Silver compounds - Energy gap - Light absorption - Yarn - Nickel compounds - Absorption spectroscopy - Potassium hydroxide - X ray photoelectron spectroscopy - Nanotubes - Chlorine compounds - Oxygen vacancies - Scanning electron microscopy - Sodium Borohydride

摘要：This work reports the facile synthesis of reduced N/Ni-doped TiO2 nanotubes photoanodes and their photocatalytic activity application. The obtained photoanodes were characterized by scanning electron microscope (SEM), Raman spectrum (Raman), X-ray photoelectron spectroscopy (XPS) and diffuse reflectance absorption spectra. The narrowed band gap of TiO2 due to the doping of N and Ni elements could enhance the light absorption effectively. The NaBH4 reduction process resulted in the formation of oxygen vacancies in photoanodes. The electrochemical characterization revealed that photo-induced carriers were more efficient charge separation and transportation in reduced N/Ni-doped TiO2 nanotubes photoanodes. The highest photocurrent density obtained from reduced N/Ni-doped TiO2 nanotubes photoanodes was 2.52 mA cm(-2) at 0 V vs. Ag/AgCl in 1 M KOH solution, which was about five times as high as that obtained from undoped TiO2. .