Nanostructured WO3/BiVO4 Heterojunction Films for Efficient Photoelectrochemical Water Splitting

被引：970

作者：

Su, Jinzhan ^{[1
]}

Guo, Liejin ^{[1
]}

Bao, Ningzhong ^{[2
]}

Grimes, Craig A. ^{[2
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Energy & Power Engn, State Key Lab Multiphase Flow Power Engn, Xian 710049, Shaanxi, Peoples R China

[2] Nanjing Univ Technol, Coll Chem & Chem Engn, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Peoples R China

来源：

NANO LETTERS | 2011年 / 11卷 / 05期

基金：

中国国家自然科学基金;

关键词：

WO3; BiVO4; nanorod; nanowire; photoelectrochemical; photoelectrolysis; VISIBLE-LIGHT IRRADIATION; SENSITIZED SOLAR-CELLS; NANOTUBE ARRAYS; PHOTOCURRENT SPECTROSCOPY; ELECTRODES; WO3; PHOTOANODES; COMPOSITE; TRANSPORT;

D O I：

10.1021/nl2000743

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report on a novel heterojunction WO3/BiVO4 photoanode for photoelectrochemical water splitting. The heterojunction films are prepared by solvothermal deposition of a WO3 nanorod-array film onto fluorine-doped tin oxide (FTO) coated glass, with subsequent deposition of a low bandgap, 2.4 eV, visible light responding BiVO4 layer by spin-coating. The heterojunction structure offers enhanced photoconversion efficiency and increased photocorrosion stability. Compared to planar WO3/BiVO4 heterojunction films, the nanorod-array films show significantly improved photoelectrochemical properties due, we believe, to the high surface area and improved separation of the photogenerated charge at the WO3/BiVO4 interface. Synthesis details are discussed, with film morphologies and structures characterized by field emission scanning electron microscopy and X-ray diffraction.

引用

页码：1928 / 1933

页数：6

共 29 条

[1] Enhanced photoelectrocatalytic activity of FTO/WO3/BiVO4 electrode modified with gold nanoparticles for water oxidation under visible light irradiation [J].