Controlled synthesis, characterization and photocatalytic activity of BiPO4 nanostructures with different morphologies

Lang Wei Cheng, Jui Chien Tsai, Tzu Yun Huang, Chang Wei Huang, Binesh Unnikrishnan, Yang-Wei Lin

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The synthesis of bismuth phosphate (BiPO4) nanostructures with various morphologies and phases was explored under ultrasound irradiation and hydrothermal process. Powder x-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and UV-Vis diffuse reflectance spectroscopy (DRS) were used to characterize the BiPO4 samples. The effects of ultrasound irradiation and hydrothermal conditions on the phases and morphologies of the BiPO4 samples were studied, and the growth mechanisms of the 1D structure were investigated. The different BiPO4 samples exhibited different optical properties and photocatalytic activities for the degradation of methyl blue (MB) under UV light irradiation. The experimental results suggest that the high photocatalytic activity of the sample prepared under hydrothermal conditions is due to a low electron and hole recombination rate and the high potential of the photogenerated holes in the valence band. The practicality of this BiPO4 photocatalyst was validated for the degradation of MB in environmental and industrial wastewater samples, which demonstrated the advantages of its high photocatalytic activity.

Original languageEnglish
Article number025023
JournalMaterials Research Express
Volume1
Issue number2
DOIs
Publication statusPublished - 2014 Jun 1

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Nanostructures
Thermodynamic properties
Irradiation
Ultrasonics
Degradation
Photocatalysts
Valence bands
Bismuth
Ultraviolet radiation
Powders
Raman spectroscopy
Phosphates
Wastewater
Optical properties
Diffraction
Spectroscopy
Transmission electron microscopy
X rays
Scanning electron microscopy
Electrons

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Metals and Alloys

Cite this

Cheng, Lang Wei ; Tsai, Jui Chien ; Huang, Tzu Yun ; Huang, Chang Wei ; Unnikrishnan, Binesh ; Lin, Yang-Wei. / Controlled synthesis, characterization and photocatalytic activity of BiPO4 nanostructures with different morphologies. In: Materials Research Express. 2014 ; Vol. 1, No. 2.
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Controlled synthesis, characterization and photocatalytic activity of BiPO4 nanostructures with different morphologies. / Cheng, Lang Wei; Tsai, Jui Chien; Huang, Tzu Yun; Huang, Chang Wei; Unnikrishnan, Binesh; Lin, Yang-Wei.

In: Materials Research Express, Vol. 1, No. 2, 025023, 01.06.2014.

Research output: Contribution to journalArticle

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