Visible Light-Assisted Photocatalysis Using Spherical-Shaped BiVO4 Photocatalyst

Catalysts

AnujaA. Yadav¹  Seok-Won Kang¹  Masayuki Itagaki²  Yuta Fujii³  Akihiro Uchida³  Chiaki Terashima³  Suresh Gosavi³  Yusuke Tominaga³  Makoto Yuasa³  YuvarajM. Hunge³  Isao Shitanda³  Takeshi Kondo³  Norihiro Suzuki³  Akira Fujishima³ 

[1] Department of Automotive Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan, Gyeongbuk 38541, Korea;Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan;Photocatalysis International Research Center, Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan;

关键词: hydrothermal method;    BiVO₄;    photocatalysis;    crystal violet dye;   

DOI  :  10.3390/catal11040460

来源: DOAJ

【 摘 要 】

In this research work, we reported the synthesis of a spherical-shaped bismuth vanadate (BiVO₄) photocatalyst using a cost-effective, simple, chemical hydrothermal method and studied the effect of deposition temperatures on the structural, morphological, optical properties, etc. The XRD result confirmed the monoclinic scheelite phase of BiVO₄. An XPS study confirmed the occurrence of Bi, V, and O elements and also found that Bi and V exist in +3 and +5 oxidation states, respectively. SEM micrographs revealed the spherical-shaped morphology of the BiVO₄ photocatalyst. Optical investigation showed that the bandgap of the BiVO₄ photocatalyst varied between 2.25 and 2.32 eV. The as-synthesized BiVO₄ photocatalyst was used to study the photocatalytic degradation of crystal violet (CV) dye under visible light illumination. The photocatalytic degradation experiment showed that the degradation percentage of crystal violet dye using BiVO₄ reached 98.21% after 120 min. Mineralization of crystal violet dye was studied using a chemical oxygen demand analysis.

【 授权许可】

Unknown