Vertically aligned hexagonal WO3 nanotree electrode for photoelectrochemical water oxidation

被引：14
|
作者：
Nukui, Yuya [1 ]
Srinivasan, Nagarajan [1 ]
Shoji, Shusaku [1 ]
Atarashi, Daiki [1 ]
Sakai, Etsuo [1 ]
Miyauchi, Masahiro [1 ,2 ]
机构：
[1] Tokyo Inst Technol, Grad Sch Sci & Engn, Dept Met & Ceram Sci, Meguro Ku, Tokyo 1528552, Japan
[2] Japan Sci & Technol Agcy JST, Kawaguchi, Saitama 3320012, Japan
来源：
CHEMICAL PHYSICS LETTERS | 2015年 / 635卷
基金：
日本科学技术振兴机构;
关键词：
SHUTTLE REDOX MEDIATOR; VISIBLE-LIGHT; CRYSTAL-STRUCTURE; MONOCLINIC WO3; THIN-FILMS; PHOTOCATALYTIC ACTIVITY; PHOTOANODES; O-2; NANOSTRUCTURE; NANOPARTICLES;
D O I：
10.1016/j.cplett.2015.07.006
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：
Thin films of aligned hexagonal WO3 nanotrees were fabricated on metal tungsten substrates by hydrothermal treatment. In the presence of a sacrificial reduction agent, the fabricated WO3 nanotree films oxidized water to evolve oxygen under visible-light irradiation. The photocatalytic water oxidation activity of the WO3 nanotree was higher than that of a dense monoclinic WO3 electrode, and had a quantum efficiency of 3.2% under visible-light irradiation. With the application of an anodic bias potential, the WO3 nanotree electrode produced both hydrogen and oxygen in the absence of a sacrificial agent under visible-light irradiation. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：306 / 311
页数：6
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