Use of Mn doping to suppress defect sites in Ag 3 PO 4: Applications in photocatalysis

Mohammad Afif, Uyi Sulaeman, Anung Riapanitra, Roy Andreas, Shu Yin

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

The highly active Mn-doped Ag 3 PO 4 photocatalyst was successfully synthesized under coprecipitation method using AgNO 3 , Na 2 HPO 4 ·12H 2 O, and MnSO 4 ·H 2 O, followed by annealing. The products were characterized using the SEM, XRD, DRS, XPS, and BET. The results showed that the Mn doping decreased the broad absorption in the visible region and increased the atomic ratio of O/Ag. The hydroxyl defects and oxygen vacancies can be suppressed by Mn doping and the photocatalytic activity under visible light irradiation could be improved. This excellent photocatalytic activity was caused by decreasing the recombination of electron and holes due to suppressing the defect sites in the surface of Ag 3 PO 4 .

Original languageEnglish
Pages (from-to)352-357
Number of pages6
JournalApplied Surface Science
Volume466
DOIs
Publication statusPublished - 2019 Feb 1

Keywords

  • Ag PO
  • Defect sites
  • Hydroxyl defect
  • Mn doping
  • Oxygen vacancy
  • Photocatalysis

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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