Bismuth oxychloride hollow microspheres with high visible light photocatalytic activity

Cui, Pengzhen, Wang, Jiali, Wang, Zumin, Chen, Jun, Xing, Xianran, Wang, Lianzhou and Yu, Ranbo (2016) Bismuth oxychloride hollow microspheres with high visible light photocatalytic activity. Nano Research, 9 3: 593-601. doi:10.1007/s12274-015-0939-z


Author Cui, Pengzhen
Wang, Jiali
Wang, Zumin
Chen, Jun
Xing, Xianran
Wang, Lianzhou
Yu, Ranbo
Title Bismuth oxychloride hollow microspheres with high visible light photocatalytic activity
Journal name Nano Research   Check publisher's open access policy
ISSN 1998-0000
1998-0124
Publication date 2016-02-01
Year available 2016
Sub-type Article (original research)
DOI 10.1007/s12274-015-0939-z
Open Access Status Not Open Access
Volume 9
Issue 3
Start page 593
End page 601
Total pages 9
Place of publication Beijing, China
Publisher Tsinghua University Press
Language eng
Subject 2500 Materials Science
2208 Electrical and Electronic Engineering
Abstract Hollow microspheres of two bismuth oxychlorides, BiOCl and BiOCl, were successfully synthesized using carbonaceous microsphere sacrificial templates. The phase evolution from BiOCl to BiOCl was easily realized by heating the former at 600 °C. With a uniform diameter of about 200 nm, an average shell thickness of 40 nm, and basic nanosheets of <20 nm, the hollow microspheres of both BiOCl and BiOCl showed high visible light photocatalytic activity towards the degradation of Rhodamine B (RhB). Besides the effective photosensitization process and efficient photointroduced carrier separation, the high photocatalytic activity was believed to result from their hollow-structure-dependent large visible light absorption. Moreover, as a chlorine-deficient analogue, the BiOCl hollow spheres possessed a narrower band gap, more dispersive band structure, and higher photocarrier conversion efficiency, which further helped them to exhibit better photocatalytic activity. [Figure not available: see fulltext.]
Formatted abstract
Hollow microspheres of two bismuth oxychlorides, BiOCl and Bi24O31Cl10, were successfully synthesized using carbonaceous microsphere sacrificial templates. The phase evolution from BiOCl to Bi24O31Cl10 was easily realized by heating the former at 600 °C. With a uniform diameter of about 200 nm, an average shell thickness of 40 nm, and basic nanosheets of <20 nm, the hollow microspheres of both BiOCl and Bi24O31Cl10 showed high visible light photocatalytic activity towards the degradation of Rhodamine B (RhB). Besides the effective photosensitization process and efficient photointroduced carrier separation, the high photocatalytic activity was believed to result from their hollow-structure-dependent large visible light absorption. Moreover, as a chlorine-deficient analogue, the Bi24O31Cl10 hollow spheres possessed a narrower band gap, more dispersive band structure, and higher photocarrier conversion efficiency, which further helped them to exhibit better photocatalytic activity.
Keyword Bismuth oxychloride
Hollow Spheres
Nanosturctures
Visible light photocatalysis
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID 21271021
21271021
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
HERDC Pre-Audit
Australian Institute for Bioengineering and Nanotechnology Publications
 
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