Synthesis and characterization of highly efficient and stable Pr6O11/Ag3PO4/Pt ternary hybrid structure

[Display omitted] •Visible-light-driven Pr6O11/Ag3PO4/Pt photocatalysts were prepared.•Pr6O11/Ag3PO4/Pt showed highly efficient and stable photocatalystic activity.•The photocatalytic mechanism of Pr6O11/Ag3PO4/Pt composite was given. Ag3PO4 is an excellent photocatalyst with high efficiency and qua...

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Bibliographic Details
Published in:Applied surface science 2017-05, Vol.403, p.531-539
Main Authors: Deng, Jiatao, Liu, Lin, Niu, Tongjun, Sun, Xiaosong
Format: Article
Language:English
Subjects:
Efficiency
Photocatalyst
Pr6O11/Ag3PO4/Pt
RhB
Stability
Visible-light
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Summary:[Display omitted] •Visible-light-driven Pr6O11/Ag3PO4/Pt photocatalysts were prepared.•Pr6O11/Ag3PO4/Pt showed highly efficient and stable photocatalystic activity.•The photocatalytic mechanism of Pr6O11/Ag3PO4/Pt composite was given. Ag3PO4 is an excellent photocatalyst with high efficiency and quantum yield, but suffers from the fast recombination of photogenerated electron-hole pairs and photo-corrosion. Hereby, the highly efficient and stable visible-light-driven Pr6O11/Ag3PO4/Pt photocatalyst were prepared via a three-step wet chemical approach. The as-prepared Pr6O11/Ag3PO4/Pt composite was characterized by X-ray diffraction, US-vis diffuse reflectance spectroscopy, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, photoluminescence spectra and transient photocurrent as well. Comparing with single Pr6O11 or Ag3PO4, the prepared Pr6O11/Ag3PO4/Pt composite exhibited much higher photocatalytic activity and stability for the degradation of Rhodamine B under visible light irradiation (>420nm). The enhanced photocatalytic performance of Pr6O11/Ag3PO4/Pt composite has been attributed to the efficient separation of photo-generated electron-hole pairs through a scheme system composed of Pr6O11, Ag3PO4 and Pt.
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2017.01.257