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Novel visible-light-driven AgX/graphite-like C3N4 (X = Br, I) hybrid materials with synergistic photocatalytic activity

Paper ID Volume ID Publish Year Pages File Format Full-Text
45998 46428 2013 12 PDF Available
Title
Novel visible-light-driven AgX/graphite-like C3N4 (X = Br, I) hybrid materials with synergistic photocatalytic activity
Abstract

Novel visible-light-driven AgX/g-C3N4 (X = Br, I) hybrid materials were synthesized by the facile water bath method. The AgX/g-C3N4 hybrid materials were characterized by X-ray diffraction (XRD), energy dispersive X-ray spectrometer (EDS), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), UV–vis diffuse reflectance spectroscopy (DRS), photoluminescence (PL), Fourier transform infrared spectra (FTIR), Raman and the special surface area. The XRD, EDS, TEM, FTIR, Raman and XPS analyses indicated that AgX nanoparticles were evenly distributed on the surface of g-C3N4 and the heterostructures were formed. The photocatalytic activity of the AgX/g-C3N4 hybrid materials was evaluated using methyl orange as a target organic pollutant. The as-prepared AgX/g-C3N4 hybrid materials displayed much higher photocatalytic activity than the pure g-C3N4 and AgX nanoparticles. After the introduction of AgX nanoparticles, the photocurrent of the AgBr/g-C3N4 and AgI/g-C3N4 hybrid materials was found to increase by 21 and 8 times than that of the pure g-C3N4, respectively. The increased photocatalytic activity of the AgX/g-C3N4 hybrid materials was attributed to the synergic effect between g-C3N4 and AgX, which included the optical property, the better dispersion and the small size. A photocatalytic mechanism and the kinetics of AgX/g-C3N4 hybrid materials were also proposed.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► AgX/g-C3N4 hybrid materials displayed the much higher photocatalytic activity. ► The increasing activity of materials was attributed to the synergic effect. ► The heterostructures were superior for the transfer of electrons and holes.

Keywords
g-C3N4; Silver halide; Graphite-like structure; Hybrid material; Photocatalytic
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Novel visible-light-driven AgX/graphite-like C3N4 (X = Br, I) hybrid materials with synergistic photocatalytic activity
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 129, 17 January 2013, Pages 182–193
Authors
, , , , , , , ,
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