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

共 48 条

[1] Overall Water Splitting under Visible Light through a Two-Step Photoexcitation between TaON and WO3 in the Presence of an Iodate-Iodide Shuttle Redox Mediator [J].

Abe, Ryu ;

Higashi, Masanobu ;

Domen, Kazunari .

CHEMSUSCHEM, 2011, 4 (02) :228-237

[2]

Augustynski J., 2006, NANOSTRUCTURED THIN

[3] Atmospheric pressure chemical vapor deposition of crystalline monoclinic WO3 and WO3-x thin films from reaction of WCl6 with O-containing solvents and their photochromic and electrochromic properties [J].

Blackman, CS ;

Parkin, IP .

CHEMISTRY OF MATERIALS, 2005, 17 (06) :1583-1590

[4] WO3 and W2N nanowire arrays for photoelectrochemical hydrogen production [J].

Chakrapani, Vidhya ;

Thangala, Jyothish ;

Sunkara, Mahendra K. .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2009, 34 (22) :9050-9059

[5]

Cu Z., 2006, J PHYS CHEM B, V110, P23829

[6] CRYSTAL-STRUCTURE OF TRICLINIC WO3 [J].

DIEHL, R ;

BRANDT, G ;

SALJE, E .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1978, 34 (APR) :1105-1111

[7] PHOTOCATALYTIC DECOMPOSITION OF WATER INTO H-2 AND O-2 OVER NIO-SRTIO3 POWDER .1. STRUCTURE OF THE CATALYST [J].

DOMEN, K ;

KUDO, A ;

ONISHI, T ;

KOSUGI, N ;

KURODA, H .

JOURNAL OF PHYSICAL CHEMISTRY, 1986, 90 (02) :292-295

[8] Small polaron formation in porous WO3-x nanoparticle films [J].

Ederth, J ;

Hoel, A ;

Niklasson, GA ;

Granqvist, CG .

JOURNAL OF APPLIED PHYSICS, 2004, 96 (10) :5722-5726

[9] ELECTROCHEMICAL PHOTOLYSIS OF WATER AT A SEMICONDUCTOR ELECTRODE [J].

FUJISHIMA, A ;

HONDA, K .

NATURE, 1972, 238 (5358) :37-+

[10] STRUCTURAL STUDY OF A NEW HEXAGONAL FORM OF TUNGSTEN TRIOXIDE [J].

GERAND, B ;

NOWOGROCKI, G ;

GUENOT, J ;

FIGLARZ, M .

JOURNAL OF SOLID STATE CHEMISTRY, 1979, 29 (03) :429-434

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