Epitaxial growth of Bi2S3 nanowires on BiVO4 nanostructures for enhancing photoelectrochemical performance

被引：42

作者：

Liu, Canjun ^{[1
]}

Li, Jie ^{[1
]}

Li, Yaomin ^{[2
]}

Li, Wenzhang ^{[1
]}

Yang, Yahui ^{[3
]}

Chen, Qiyuan ^{[1
]}

机构：

[1] Cent South Univ, Sch Chem & Chem Engn, Changsha 410083, Peoples R China

[2] UCL, Dept Chem, London WC1H 0AJ, England

[3] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China

来源：

RSC ADVANCES | 2015年 / 5卷 / 88期

关键词：

VISIBLE-LIGHT; HYDROGEN GENERATION; TUNGSTEN TRIOXIDE; QUANTUM DOTS; HETEROJUNCTION FILMS; WO3; PHOTOELECTRODES; CHARGE SEPARATION; WATER OXIDATION; PHOTOANODE; ARRAYS;

D O I：

10.1039/c5ra13171e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this paper, a novel Bi2S3/BiVO4 heterojunction film was prepared by a facile drop-casting and hydrothermal method for the first time. The as-prepared films were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and ultraviolet visible spectrometry (UV-Vis). Interestingly, the heterojunction film was formed by epitaxial growth of Bi2S3 nanowires on BiVO4 nanostructures and exhibited a good visible light absorption performance. Photoelectrochemical (PEC) hydrogen generation was demonstrated using the prepared films as photoanodes. The heterojunction photoelectrode showed an excellent PEC activity and generated a photocurrent density of 7.81 mA cm(-2) at 0.9761 V vs. RHE (0.1 V vs. Ag/AgCl) in the electrolyte solution containing 0.35 M Na2SO3 and 0.25 M Na2S. The present study provides new insight into the design of highly efficient heterojunction photoelectrodes for hydrogen generation.

引用

页码：71692 / 71698

页数：7

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