4.0 Article

Effect of Operational Parameters on the Degradation of Methylene Blue Using Visible Light Active BiVO4 Photocatalyst

Journal

BULLETIN OF THE KOREAN CHEMICAL SOCIETY
Volume 41, Issue 3, Pages 304-309

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/bkcs.11972

Keywords

BiVO4 nanoparticles; Semiconductor; Methylene blue; Visible light; Degradation

Funding

  1. Korea Basic Science Institute (KBSI) National Research Facilities AMP
  2. Equipment Center (NFEC) grant - Korea government (Ministry of Education) [2019R1A6C1010042]
  3. National Research Foundation of Korea [21A20151513130, 2019R1A6C1010042] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

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Visible light active bismuth vanadate (BiVO4) nanoparticles were fabricated by the facile hydrothermal method. The crystal structure and formation of the prepared BiVO4 were examined by X-ray diffraction and Fourier-transform infrared spectroscopy. The optical absorption property of BiVO4 was measured by ultraviolet-vis diffuse reflectance spectroscopy. The photocatalytic activity of the as-prepared BiVO4 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 BiVO4 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.

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