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

页码：306 / 311

页数：6

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