Tailoring the porosity of ZnO/ZnFe2O4 composites for photocatalytic applications

This paper reported a novel method to synthesize porous ZnO/ZnFe2O4 particles by chemically etching ZnO/ZnO2O4/SO2 composite particles in an alkaline solution, and the porosity of the particles could be tailored by controlling the concentration of SO2 in the ZnO/ZnO2O4/SO2 composites. The photocatal...

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Bibliographic Details
Published in:Ceramics international 2017-12, Vol.43 (17), p.16027-16031
Main Authors: Chen, Mansheng, Liu, Dongcheng, Deng, Yifang, Fu, Weiwei, Zou, Huahong, Liang, Fupei
Format: Article
Language:English
Subjects:
Composite materials
Magnetic materials
Microstructure
X-ray techniques
XPS
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Summary:This paper reported a novel method to synthesize porous ZnO/ZnFe2O4 particles by chemically etching ZnO/ZnO2O4/SO2 composite particles in an alkaline solution, and the porosity of the particles could be tailored by controlling the concentration of SO2 in the ZnO/ZnO2O4/SO2 composites. The photocatalytic performance of both solid and porous ZnO/ZnFe2O4 particles was investigated in methylene blue (MB) degradation reaction. The results showed that the particles with higher porosity displayed a higher catalytic performance, which was indicated by a larger first-order reaction constant (κ) and an improved degradation efficiency (η). Moreover, the magnetization of the particles could be used for the magnetic separation of catalysts after reactions.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2017.08.148