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2016 , Vol. 16 >Issue 5: 882 - 888

DOI: https://doi.org/10.12034/j.issn.1009-606X.216140

Materials Engineering

Preparation of α-Fe2O3/ZnFe2O4 Composite Powder and Its Photocatalytic Degradation to Methylene Blue

  • PENG Chao WU Zhao-jun
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  • 1. Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, Anhui University of Technology
    2. Anhui Key Laboratory of Metallurgical Engineering & Resources Recycling, Anhui University of Technology

Received date: 2016-02-29

  Revised date: 2016-04-12

  Online published: 2016-10-14

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Abstract

A series of α-Fe2O3/ZnFe2O4 heterojunction photocatalysts with different molar ratios of ?-Fe2O3 to ZnFe2O4 were prepared by a simple precipitation?calcination method. The effect of component ratio on photocatalytic activity of ?-Fe2O3/ZnFe2O4 was evaluated through the degradation of methylene blue (MB) solution (10 mg/L) under irradiation of a xenon lamp (300 W). The results indicated that the ?-Fe2O3/ZnFe2O4 exhibited an enhanced photocatalytic activity than either the single-phase ?-Fe2O3 or ZnFe2O4. The ?-Fe2O3/ZnFe2O4 with a molar ratio of ?-Fe2O3 to ZnFe2O4 1:1 had an optical band gap of 1.94 eV, which can make use of approximately 41% of the solar spectrum. It delivered the beat photocatalytic activity among the tested component ratios, and its photodegradation rate of MB reached to 99.65% under the irradiation of the xenon lamp within 210 min.

Key words： ?-Fe2O3/ZnFe2O4 composite photocatalyst; heterojunction; photodegradation; methylene blue

Cite this article

PENG Chao WU Zhao-jun . Preparation of α-Fe2O3/ZnFe2O4 Composite Powder and Its Photocatalytic Degradation to Methylene Blue[J]. The Chinese Journal of Process Engineering, 2016 , 16(5) : 882 -888 . DOI: 10.12034/j.issn.1009-606X.216140

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