The effects of solvents on the solvothermal synthesis of BiVO4 photocatalyst powders

N. Thanomsri, C. Mongkolkachit, T. Sato, X. Wu, P. Sujaridworakun

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this study, the effects of different solvents for instance; ethanol, ethylene glycol, glycerol on the preparation of BiVO4 via solvothermal process, and the influence of calcination heat treatment were studied. The crystal structure, surface area, morphology and optical properties of the obtained BiVO4 particles were investigated by means of X-ray Diffraction (XRD), Brunauer Emmett Teller method (BET), Scanning electron microscope (SEM) and UV-Vis reflectance spectroscopy (UV-Vis DRS), respectively. XRD patterns reveal that all of the obtained BiVO4 samples prepared by solvothermal at 130°C for 4 h have monoclinic structure. The UV-Vis DRS demonstrates that the band gaps of prepared BiVO4 are about 2.38-2.40 eV. The photocatalytic activity was evaluated by photo-degradation of rhodamine B (rhB) solution under visible light irradiation (λ>420 nm). As the results, the BiVO4 prepared by using ethanol having high crystallinity and surface area showed the highest visible light photocatalytic activity compared to using glycerol and ethylene glycol, respectively. Furthermore, the photocatalytic activity of BiVO4 prepared by using ethylene glycol and glycerol could be enhanced by calcination heat treatment at 500°C for 2 h.

Original languageEnglish
Title of host publicationMaterials Science and Technology VIII
EditorsPeerapong Pinwanich
PublisherTrans Tech Publications Ltd
Pages154-158
Number of pages5
ISBN (Print)9783038355526
DOIs
Publication statusPublished - 2015
Event8th International Conference on Materials Science and Technology, MSAT 2014 - Bangkok, Thailand
Duration: 2014 Dec 152014 Dec 16

Publication series

NameKey Engineering Materials
Volume659
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Other

Other8th International Conference on Materials Science and Technology, MSAT 2014
CountryThailand
CityBangkok
Period14/12/1514/12/16

Keywords

  • Bismuth vanadate
  • Ethanol
  • Photocatalyst
  • Rhodamine B
  • Solvothermal process

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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