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Enhanced Photocatalytic Activity of Two-Pot-Synthesized BiFeO3–ZnFe2O4 Heterojunction Nanocomposite

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Abstract

BiFeO3–ZnFe2O4 heterojunction nanocomposites have been produced by a chemical synthesis method using one- and two-pot approaches. X-ray diffraction patterns of as-calcined samples indicated formation of pure zinc ferrite (ZnFe2O4) and bismuth ferrite (BiFeO3) phases, each retaining its crystal structure. Diffuse reflectance spectrometry was applied to calculate the optical bandgap of the photocatalysts, revealing values in the range from 2.03 eV to 2.17 eV, respectively. The maximum photodegradation of methylene blue of about 97% was achieved using two-pot-synthesized photocatalyst after 120 min of visible-light irradiation due to the higher probability of charge separation of photogenerated electron–hole pairs in the heterojunction structure. Photoluminescence spectra showed lower emission intensity of two-pot-synthesized photocatalyst, due to its lower recombination rate originating from greater charge separation.

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Authors and Affiliations

  1. School of Metallurgy and Materials Engineering, Iran University of Science and Technology (IUST), Tehran, Iran

    A. Ghasemi, M. Hasheminiasari, S. M. Masoudpanah & B. Safizade

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  1. A. Ghasemi
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  2. M. Hasheminiasari
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  3. S. M. Masoudpanah
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  4. B. Safizade
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Correspondence to M. Hasheminiasari.

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Ghasemi, A., Hasheminiasari, M., Masoudpanah, S.M. et al. Enhanced Photocatalytic Activity of Two-Pot-Synthesized BiFeO3–ZnFe2O4 Heterojunction Nanocomposite. J. Electron. Mater. 47, 2225–2229 (2018). https://doi.org/10.1007/s11664-017-6035-2

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  • DOI: https://doi.org/10.1007/s11664-017-6035-2

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