Ag3PO4/TiO2 heterostructures with enhanced photocatalytic activity. Issue 2 (8th October 2014)

• Record Type: Journal Article
• Authors: Li, Junqi; Guo, Zhanyun; Liu, Zhenxing; Cui, Mingming; Zhu, Zhenfeng
• Is Part Of: Physica status solidi. Volume 212:Issue 2(2015:Feb.)
• Page Start: 459
• Page End: 466
• Publication Date: 2014-10-08
• Subjects: Solid state physics -- Periodicals; Solids -- Industrial applications -- Periodicals; 530.41
• DOI: 10.1002/pssa.201431537
• Languages: English
• ISSNs: 1862-6300

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="pssa201431537-sec-0001" sec-type="section"> <p>Heterostructured Ag₃PO₄/TiO₂ composites have been fabricated via an <italic>in situ</italic> precipitation method by depositing Ag₃PO₄ nanoparticles onto the surface of TiO₂ microspheres. The enhanced photocatalytic activity of the Ag₃PO₄/TiO₂ heterostructures for the degradation of rhodamine B (RhB) under UV light irradiation could be attributed to the effective separation of photogenerated electron–hole pairs driven by the photoinduced potential difference generated at the Ag₃PO₄/TiO₂ heterojunction interface. Furthermore, when 10 at% (molar percentage) of Ag₃PO₄ is loaded onto the TiO₂ surface, the Ag₃PO₄/TiO₂ composites exhibit the best photocatalytic activity and the rate constant of RhB degradation is over three times that of pure TiO₂. In addition, the mechanism for the enhancement of the photocatalytic activity of Ag₃PO₄/TiO₂ is also investigated by comparison of their PL spectra.</p> </sec> </abstract>