Graphite-like C3N4 modified Ag3PO4 nanoparticles with highly enhanced photocatalytic activities under visible light irradiation

•C3N4 modified Ag3PO4 nanoparticles were prepared by a chemisorption method.•The coupled photocatalysts exhibited highly enhanced photocatalytic performance.•The matching band potentials led to an improved separation efficiency. Graphite-like C3N4 (g-C3N4) modified Ag3PO4 nanoparticles with highly e...

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Bibliographic Details
Published in:Applied surface science 2014-01, Vol.289, p.394-399
Main Authors: Xiu, Zhiliang, Bo, Hai, Wu, Yongzhong, Hao, Xiaopeng
Format: Article
Language:English
Subjects:
Ag3PO4
Chemisorption
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Electrochemical impedance spectroscopy
Exact sciences and technology
Graphite-like C3N4
Light irradiation
Nanoparticles
Photocatalysis
Photocatalysts
Photocatalytic activities
Physics
Scanning electron microscopy
Separation
Surface chemistry
Synergistic effect
Visible light
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Summary:•C3N4 modified Ag3PO4 nanoparticles were prepared by a chemisorption method.•The coupled photocatalysts exhibited highly enhanced photocatalytic performance.•The matching band potentials led to an improved separation efficiency. Graphite-like C3N4 (g-C3N4) modified Ag3PO4 nanoparticles with highly enhanced photocatalytic activities under visible light irradiation (λ≥400nm) compared to the bare Ag3PO4 nanoparticles were prepared by a facile chemisorption method. The resulting C3N4/Ag3PO4 composite photocatalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR) and ultraviolet–visible diffuse reflectance spectra (DRS). Enhanced charge separation efficiency was confirmed by electrochemical impedance spectroscopy (EIS) measurements. The enhanced photocatalytic activities were mainly ascribed to the synergistic effect between C3N4 and Ag3PO4 which led to an improved separation efficiency of electron-hole pairs. The high-efficient hybrid photocatalysts are expected to show considerable potential applications in wastewater treatment and water splitting.
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2013.10.175