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The Effect of Solvent on the Synthesis of BiVO4 Using Solvothermal Method and Their Photocatalytic Activity Under Visible Light Irradiation

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Abstract

A monoclinic-tetragonal heterostructure of BiVO4 was successfully synthesized by performing a solvothermal method using different molar ratio of EGME/H2O as mixed solvents. The phase structure and morphology of as-prepared BiVO4 samples were characterized by Raman spectroscopy, XRD, SEM and DRS. We have also investigated the photocatalytic activity of these materials for the decomposition of Rhodamine B under visible light irradiation. When BiVO4 was synthesized using a mixture of EGME and H2O solvents (EGME/H2O volume ratio varied from 70/10 to 10/70), XRD pattern showed the coexistence of monoclinic and tetragonal phase. From the XRD, Raman spectroscopy and SEM results, the monoclinic-tetragonal heterostructure of BiVO4 samples prepared using different volume ratios of EGME/H2O exhibited different morphologies and crystal structure. The BiVO4 catalyst, which was prepared when the volume ratio of EGME/water was set at 40/40, showed the highest photocatalytic activity in the photodegradation of Rhodamine B under visible light.

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Acknowledgements

This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology.

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Authors and Affiliations

  1. Department of Chemical Engineering, Pukyong National University, 365 Shinseonro, Busan, 48547, South Korea

    Duy Trinh Nguyen & Seong-Soo Hong

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  1. Duy Trinh Nguyen
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  2. Seong-Soo Hong
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Correspondence to Seong-Soo Hong.

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Nguyen, D.T., Hong, SS. The Effect of Solvent on the Synthesis of BiVO4 Using Solvothermal Method and Their Photocatalytic Activity Under Visible Light Irradiation. Top Catal 60, 782–788 (2017). https://doi.org/10.1007/s11244-017-0770-8

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  • DOI: https://doi.org/10.1007/s11244-017-0770-8

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