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Novel plate-stratiform nanostructured Bi12O17Cl2 with visible-light photocatalytic performance

Published online by Cambridge University Press:  17 February 2016

Mei Zhao ,
Lifeng Dong ,
Qian Zhang ,
Hongzhou Dong ,
Chengdong Li  and
Hongyan Tang
Mei Zhao
Affiliation:
College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
Lifeng Dong*
Affiliation:
College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China Department of Physics, Hamline University, Saint Paul, Minnesota 55104
Qian Zhang
Affiliation:
College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
Hongzhou Dong
Affiliation:
College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
Chengdong Li
Affiliation:
College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
Hongyan Tang
Affiliation:
College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
*
a)Author to whom correspondence should be addressed. Electronic mail: DongLifeng@qust.edu.cn and LDong03@hamline.edu
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Abstract

Novel plate-stratiform nanostructured Bi12O17Cl2 was studied with its visible-light photocatalytic performance. The Bi12O17Cl2 photocatalyst synthesized by a solid-state reaction was constructed of dozens of primary nanosheets, which were stacked by a parallel array of ultrathin secondary nanosheets. The microstructure and crystal structure of Bi12O17Cl2 primary and secondary nanosheets were discovered by high-resolution transmission electron microscopy and selected-area electron diffraction analyses. Its absorption edge was determined as about 590 nm and the band gap energy was 2.1 eV. The Bi12O17Cl2 nanomaterial exhibited superior visible-light-responsive photocatalytic activity and confirmed successful photodegradation of methyl orange (MO) under visible-light irradiation. The degradation efficiency was up to 97% in 90 min. Furthermore, the Bi12O17Cl2 photocatalyst exhibited excellent photostability and high mineralization capacity for MO photodegradation reaction. The MO photodegradation process was dominated by the direct photocatalytic mechanism. The contribution from its morphology and microstructure to superior photocatalytic activity was discussed.

Keywords

plate-stratiform nanostructured Bi12O17Cl2photocatalytic performance
Type
Technical Articles
Information
Powder Diffraction , Volume 31 , Issue 1 , March 2016 , pp. 2 - 7
Copyright
Copyright © International Centre for Diffraction Data 2016 

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