Issue 12, 2011
From the journal:

CrystEngComm

Self-assembled 3D hierarchical clew-like Bi2WO6 microspheres: Synthesis, photo-induced charges transfer properties, and photocatalytic activities†

Dongqing He,a   Lingling Wang,ab   Haiyan Li,a   Tianyi Yan,c   Dejun Wanga  and  Tengfeng Xie*a  

* Corresponding authors

a State Key Laboratory of Theoretical and Computational chemistry, College of Chemistry, Jilin University, Changchun, China
E-mail: xietf@jlu.edu.cn
Fax: +86-0431-85168093

b State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, China

c School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, China

Abstract

Three-dimensional (3D) hierarchical clew-like microspheres with small size of bismuth tungstate (Bi2WO6) were successfully synthesized by a simple hydrothermal route at a proper volume ratio (1 : 1) of H2O/EG mixed solution. It has been found that ethylene glycol (EG) plays important roles in the formation of the clew-like structure. Bi2WO6 with different morphologies could be obtained by simply adjusting the volume ratio of the H2O/EG in the mixed solution. The kinetic features of photo-induced charges transfer properties of samples have been discussed by surface photovoltage spectrum (SPS) and transient photovoltage (TPV) techniques in detail. The Bi2WO6 with hierarchical clew-like structure possessed the highest efficiency of electron-hole separation and the lowest recombination rate of photo-induced charges, resulting in the highest photocatalytic activity for the degradation of Orange-II under the visible light (λ > 420 nm) illumination. The information provided here is thought to be beneficial for engineering high efficient photocatalysts.

Graphical abstract: Self-assembled 3D hierarchical clew-like Bi2WO6 microspheres: Synthesis, photo-induced charges transfer properties, and photocatalytic activities

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Article information

DOI
https://doi.org/10.1039/C0CE00918K
Article type
Paper
Submitted
06 Dec 2010
Accepted
21 Mar 2011
First published
14 Apr 2011

CrystEngComm, 2011,13, 4053-4059

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Self-assembled 3D hierarchical clew-like Bi2WO6 microspheres: Synthesis, photo-induced charges transfer properties, and photocatalytic activities

D. He, L. Wang, H. Li, T. Yan, D. Wang and T. Xie, CrystEngComm, 2011, 13, 4053 DOI: 10.1039/C0CE00918K

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