High Photocatalytic Activity of Oliver-Like BiVO₄ for Rhodamine B Degradation under Visible Light Irradiation

Abstract:

We report the facial synthesis of BiVO₄ crystals with different morphologies by the solvothermal and hydrothermal process. The phase structure and morphology as-synthesized samples were characterized by XRD, FE-SEM, and UV-vis DRS spectroscopy. We also investigated the photocatalytic activity of BiVO₄ for the decomposition of rhodamine B (RhB) under visible light irradiation. The results showed that oliver-like BiVO₄ was obtained when using the mixed solvent of ethylene glycol and water while starflower-like BiVO₄ was obtained using the mixed solvent of ethylene glycol monomethyl ether and water. The hydrothermal evolution process the BiVO₄ product with a rod-like morphology. Oliver-like BiVO₄ with pure monoclinic scheelite phase and high specific surface area exhibits efficient photodegradation of RhB (k = 7.82x10^-3 min^-1).

• Periodical: Applied Mechanics and Materials (Volume 876)
• Pages: 52-56
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.876.52
• Online since: February 2018
• Authors: Huu Vinh Nguyen, Tran Van Thuan, Do Trung Sy, Trinh Duy Nguyen, Dai Viet N. Vo, Long Giang Bach*
• Keywords: BiVO₄ Crystals, Photocatalytic Activity, Solvent-Driven Synthesis, Visible Light Irradiation

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