Flower-like BiVO4 microspheres and their visible light-driven photocatalytic activity

Arini Nuran Zulkifili, Akira Fujiki, Shinji Kimijima

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A flower-like BiVO4 microsphere photocatalyst was synthesized with a simple template-free homogeneous precipitation method at 60 °C for 24 h. The purpose of this study is to explore a low-cost, simple method of synthesizing the self-assembled 3D structure in order to enhance photocatalytic performance under visible light irradiation (λ > 420 nm). In this study, the morphology, structure, and photo-absorption of flower-like BiVO4 microspheres were characterized, and the effects of photocatalysis were analyzed. The results indicate that the size of the flower-like microspheres was about 2 μm to 4 μm and they were composed of several nanosheets. The mechanism of hierarchical microsphere formation has been proposed as the Ostwald ripening process and the self-assembled process. The obtained samples were calcined under different temperatures (300 °C, 400 °C, 500 °C and 600 °C) to study the effects of calcination on the structure and on photocatalysis. The photocatalytic process was then evaluated by decolorization of methylene blue dye under visible-light irradiation.

Original languageEnglish
Article number216
JournalApplied Sciences (Switzerland)
Volume8
Issue number2
DOIs
Publication statusPublished - 2018 Jan 31

Fingerprint

Microspheres
irradiation
Ostwald ripening
Photocatalysis
methylene blue
photoabsorption
roasting
templates
dyes
Irradiation
Nanosheets
Methylene Blue
Photocatalysts
Calcination
Coloring Agents
Dyes
temperature
bismuth vanadium tetraoxide
Costs
Temperature

Keywords

  • Bismuth vanadate
  • Low-cost method
  • Methylene blue dye
  • Microspheres
  • Photocatalyst
  • Visible light

ASJC Scopus subject areas

  • Materials Science(all)
  • Instrumentation
  • Engineering(all)
  • Process Chemistry and Technology
  • Computer Science Applications
  • Fluid Flow and Transfer Processes

Cite this

Flower-like BiVO4 microspheres and their visible light-driven photocatalytic activity. / Zulkifili, Arini Nuran; Fujiki, Akira; Kimijima, Shinji.

In: Applied Sciences (Switzerland), Vol. 8, No. 2, 216, 31.01.2018.

Research output: Contribution to journalArticle

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