Preparation of Bi2O3@Bi2S3 core-shell nanoparticle assembled thin films and their photoelectrochemical and photoresponsive properties

被引：19

作者：

Liu, Fa-Ai ^{[1
]}

Yang, Ying-Chang ^{[1
]}

Liu, Jun ^{[1
]}

Huang, Wei ^{[1
]}

Li, Ze-Lin ^{[1
]}

机构：

[1] Hunan Normal Univ, Key Lab Chem Biol & Tradit Chinese Med Res, Minist Educ China, Dept Chem, Changsha 410081, Hunan, Peoples R China

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2012年 / 665卷

基金：

中国国家自然科学基金;

关键词：

Thin films; Nanoparticles; Semiconductors; Core-shell; Photoelectrochemistry; Photoresponse; PHOTOCATALYTIC ACTIVITY; CORE/SHELL NANOCRYSTALS; BI2S3; NANOWIRES; QUANTUM DOTS; DEGRADATION;

D O I：

10.1016/j.jelechem.2011.11.015

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Thin films of type-II Bi2O3@Bi2S3 core-shell nanoparticles (NPs) have been assembled on fluorine doped tin oxide (FTO) coated conducting glass substrates via a facile new route. It contains three steps: electrochemical dispersion of a Bi electrode into Bi NPs collected with the FTO substrate, thermal treatment of the assembled thin film of Bi NPs on the FTO substrate into Bi2O3 NPs, and then surface sulfurization of the Bi2O3 NPs. The films of these NPs were characterized by field emission scanning electron microscopy, transmission electron microscope, X-ray diffraction, and Raman spectroscopy. The prepared thin film of Bi2O3@Bi2S3 core-shell NPs displays much better photoelectrochemical performance and photoresponse than both of Bi2O3 NPs without sulfurization and Bi2S3 NPs from complete sulfurization of Bi2O3 NPs, suggesting the advantage of type-II Bi2O3@Bi2S3 core-shell structure. The Bi2O3@Bi2S3 core-shell nanoparticle assembled thin films promise potential applications in photoelectrochemical cells, photodetectors and optoelectronic devices. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：58 / 62

页数：5

共 22 条

[1] Inverted core/shell nanocrystals continuously tunable between type-I and type-II localization regimes [J].