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Synthesis of the visible-light-driven Ag3VO4/Ag3PO4/Ag photocatalysts with enhanced photocatalytic activity

Akbarzadeh, E ; Sharif University of Technology | 2016

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  1. Type of Document: Article
  2. DOI: 10.1039/c6ra00279j
  3. Publisher: Royal Society of Chemistry , 2016
  4. Abstract:
  5. A novel visible-light-driven Ag3VO4/Ag3PO4/Ag photocatalyst was successfully synthesized via an anion-exchange reaction and characterized by X-ray diffraction, field emission scanning electron microscopy, X-ray photoelectron spectroscopy, UV-vis diffuse-reflectance spectroscopy and Fourier transform infrared spectroscopy. The photocatalytic activities of prepared catalysts were evaluated by degradation of acid blue 92 (AB92) aqueous solutions under visible light irradiation. The photocatalytic results indicated that the synthesized Ag3VO4/Ag3PO4/Ag hybrid displays a significantly enhanced activity in degradation of acid blue 92 under visible light compared with pure Ag3VO4. The improved photocatalytic activity can be attributed to the efficient separation of photo-induced electrons and holes in the composite. A possible mechanism has been proposed for this improvement. © The Royal Society of Chemistry 2016
  6. Keywords:
  7. Catalyst activity ; Field emission microscopes ; Fourier transform infrared spectroscopy ; Light ; Photocatalysis ; Photocatalysts ; Photodegradation ; Scanning electron microscopy ; Silver ; Solutions ; X ray diffraction ; Electrons and holes ; Field emission scanning electron microscopy ; Photo-catalytic ; Photocatalytic activities ; Possible mechanisms ; UV-Vis diffuse reflectance spectroscopy ; Visible-light irradiation ; Visible-light-driven ; X ray photoelectron spectroscopy
  8. Source: RSC Advances ; Volume 6, Issue 18 , 2016 , Pages 14909-14915 ; 20462069 (ISSN)
  9. URL: http://pubs.rsc.org/is/content/articlelanding/2016/ra/c6ra00279j#!divAbstract