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Effect of Operational Parameters on the Degradation of Methylene Blue Using Visible Light Active BiVO 4 Photocatalyst
Author(s) -
Arumugam Malathi,
Choi Myong Yong
Publication year - 2020
Publication title -
bulletin of the korean chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.237
H-Index - 59
ISSN - 1229-5949
DOI - 10.1002/bkcs.11972
Subject(s) - bismuth vanadate , photocatalysis , photodegradation , visible spectrum , methylene blue , diffuse reflectance infrared fourier transform , materials science , fourier transform infrared spectroscopy , degradation (telecommunications) , photochemistry , spectroscopy , hydrothermal circulation , bismuth , nuclear chemistry , catalysis , chemistry , chemical engineering , optoelectronics , organic chemistry , physics , computer science , telecommunications , quantum mechanics , engineering , metallurgy
Visible light active bismuth vanadate (BiVO 4 ) nanoparticles were fabricated by the facile hydrothermal method. The crystal structure and formation of the prepared BiVO 4 were examined by X‐ray diffraction and Fourier‐transform infrared spectroscopy. The optical absorption property of BiVO 4 was measured by ultraviolet–vis diffuse reflectance spectroscopy. The photocatalytic activity of the as‐prepared BiVO 4 photocatalyst was assessed for the photodegradation of methylene blue (MB) under visible light irradiation (VLI). About 91.9% degradation in 90 min was observed when BiVO 4 was used as a photocatalyst. Furthermore, the effect of varying the experimental parameters such as the catalyst amount, pH, and dye concentration were studied. Finally, the possible mechanism for MB degradation is presented.