Synthesis and characterization of Ag/Ag3PO4 nanomaterial modified BiPO4 photocatalyst by sonochemical method and its photocatalytic application

Yen Jui Chen, Chi Shun Tseng, Po Jen Tseng, Chang Wei Huang, Tsunghsueh Wu, Yang Wei Lin

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Ag/Ag3PO4 nanomaterial modified BiPO4 photocatalysts (Ag/Ag3PO4/BiPO4) were synthesized by sonochemical method. The BiPO4 and Ag/Ag3PO4/BiPO4 photocatalysts were characterized by XRD, UV–Vis DRS, Raman, and TEM analysis. The photocatalytic activity of the prepared heterostructures was studied through the photodegradation of methylene blue (MB) under visible-light irradiation (λ > 420 nm, 70 W/cm2). The photodegradation of MB was found to be follow pseudo-first-order kinetics. The antimicrobial activity of the prepared heterostructures has also been evaluated in the disinfection of pathogens (Escherichia coli and Staphylococcus aureus). The prepared Ag/Ag3PO4/BiPO4 photocatalysts displayed considerably higher photocatalytic activity (>99% degradation within 25 min and >99% disinfection within 20 min) than did pure BiPO4. This enhanced photocatalytic activity of the Ag/Ag3PO4/BiPO4 photocatalysts can be attributed to the high separation efficiency and low recombination rate of photogenerated electron–hole pairs, as well as the Ag+ ions release under visible light irradiation. The possible mechanism underlying the enhanced photocatalytic activities of the Ag/Ag3PO4/BiPO4 photocatalysts is also provided.

Original languageEnglish
Pages (from-to)11886-11899
Number of pages14
JournalJournal of Materials Science: Materials in Electronics
Volume28
Issue number16
DOIs
Publication statusPublished - 2017 Aug 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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