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Graphene-modified nanosized Ag3PO4 photocatalysts for enhanced visible-light photocatalytic activity and stability

Paper ID Volume ID Publish Year Pages File Format Full-Text
45637 46418 2015 8 PDF Available
Title
Graphene-modified nanosized Ag3PO4 photocatalysts for enhanced visible-light photocatalytic activity and stability
Abstract

•Graphene-modified nanosized Ag3PO4 photocatalysts were prepared by in situ growth strategy in an organic solvent.•The nanosized Ag3PO4 particles–graphene composite exhibits enhanced visible-light photocatalytic activity and stability.•The enhanced photocatalytic activity and stability arise from the positive synergetic effects of the nanosized Ag3PO4 particles and graphene sheets.•The photocatalytic mechanism of Ag3PO4–graphene composite is proposed based on the experiment results.

Novel Ag3PO4 photocatalyst possesses high visible-light photocatalytic activity, but the large crystallite size and the photocorrosion severely limit its practical application. It is highly desirable to develop new Ag3PO4 photocatalytic systems with nanosized structure and good photocatalytic stability. In this work, we prepare new graphene-modified nanosized Ag3PO4 photocatalyst by in situ growth strategy in an organic solvent. The as-prepared nanosized Ag3PO4 particles–graphene composite exhibits enhanced visible-light photocatalytic activity and stability toward the degradation of methylene blue (MB) in aqueous solution compared with bare nanosized Ag3PO4 particles and conventional large-sized Ag3PO4 particles–graphene composite. This enhanced photocatalytic activity and stability arise from the positive synergetic effects of the nanosized Ag3PO4 particles and graphene sheets including an increase in the number of active adsorption sites, suppression of charge recombination, reducing the formation of Ag nanoparticles. This work shows a great potential of nanosized Ag3PO4 particles–graphene composite for environmental purification of organic pollutants.

Graphical abstractGraphene-modified nanosized Ag3PO4 photocatalyst, fabricated by in situ growth strategy in an organic solvent, exhibits enhanced visible-light photocatalytic activity and stability compared with bare nanosized Ag3PO4 particles and conventional large-sized Ag3PO4 particles–graphene composite.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Nanosized Ag3PO4; Graphene; Photocatalytic activity; Stability; Synergetic effects
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Graphene-modified nanosized Ag3PO4 photocatalysts for enhanced visible-light photocatalytic activity and stability
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 162, January 2015, Pages 196–203
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us