期刊
MATERIALS RESEARCH BULLETIN
卷 77, 期 -, 页码 70-77出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.materresbull.2016.01.022
关键词
Oxides; Semiconductivity; Chemical synthesis; Solvothermal; Catalytic properties
资金
- Manipal University
- DST-FIST, Govt. of India Program [SR/FST/PSI-174/2012]
- SERB, DST Govt. of India [SB/S2/CMP-017/2014]
Visible light photodegradation of aqueous methyl orange using magnetically separable core-shell ZnFe2O4@ZnO nanoparticles is reported. A combination of low temperature (190 degrees C) microwave synthesis and hydrothermal method were used to prepare phase pure material with excellent yield (95%). The magnetic separability, surface area of 41 m(2)/g and visible light absorption make ZnFe2O4@ZnO nanoparticles a good solar photocatalyst. ZnFe2O4@ZnO displayed greater UV photocatalytic efficiency than ZnO owing to the generation of large number of electron-hole pairs. Visible light photodegradation of MO using ZnFe2O4@ZnO nanoparticles is reported for the first time. Higher first order rate constants under both UV and visible light for core-shell nanoparticles suggested their superiority over its individual oxides. The ZnFe2O4@ZnO showed excellent reusability with high photocatalytic efficiencies suggesting its suitability for solar photocatalytic applications. (C) 2016 Elsevier Ltd. All rights reserved.
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