Enhanced photocatalytic activity over the Ag2O-g-C 3N4 composite under visible light

Lei Shi; Lin Liang; Jun Ma; Fangxiao Wang; Jianmin Sun

doi:10.1039/c3cy00871a

Enhanced photocatalytic activity over the Ag₂O-g-C ₃N₄ composite under visible light

Lei Shi
, Lin Liang
, Jun Ma
, Fangxiao Wang
, Jianmin Sun^*

^*Corresponding author for this work

Harbin Institute of Technology
School of Life Science and Technology, Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

201 Scopus citations

Abstract

The Ag₂O-g-C₃N₄ composite was prepared by the coprecipitation method and was well characterized by X-ray diffraction, transmission electron microscopy with energy dispersion X-ray spectroscopy, UV-vis diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, photoluminescence spectroscopy and surface photovoltage spectroscopy. The photocatalytic activities were evaluated in the degradation of Rhodamine B aqueous solution. The results showed that Ag₂O sized 5-10 nm was highly anchored on the surface of the pure g-C₃N₄ support, causing the Ag₂O-g-C₃N₄ composite to show stronger absorption in the visible light region and higher photocatalytic activities than pure g-C₃N₄ and Ag₂O. The enhanced photocatalytic activities were attributed to combined effects, including highly dispersed smaller Ag₂O particles, stronger visible absorption and higher charge separation efficiency. The possible mechanism for the photocatalytic activity of Ag₂O-g-C₃N₄ was tentatively proposed.

Original language	English
Pages (from-to)	758-765
Number of pages	8
Journal	Catalysis Science and Technology
Volume	4
Issue number	3
DOIs	https://doi.org/10.1039/c3cy00871a
State	Published - 1 Mar 2014

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10.1039/c3cy00871a

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title = "Enhanced photocatalytic activity over the Ag2O-g-C 3N4 composite under visible light",

abstract = "The Ag2O-g-C3N4 composite was prepared by the coprecipitation method and was well characterized by X-ray diffraction, transmission electron microscopy with energy dispersion X-ray spectroscopy, UV-vis diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, photoluminescence spectroscopy and surface photovoltage spectroscopy. The photocatalytic activities were evaluated in the degradation of Rhodamine B aqueous solution. The results showed that Ag2O sized 5-10 nm was highly anchored on the surface of the pure g-C3N4 support, causing the Ag2O-g-C3N4 composite to show stronger absorption in the visible light region and higher photocatalytic activities than pure g-C3N4 and Ag2O. The enhanced photocatalytic activities were attributed to combined effects, including highly dispersed smaller Ag2O particles, stronger visible absorption and higher charge separation efficiency. The possible mechanism for the photocatalytic activity of Ag2O-g-C3N4 was tentatively proposed.",

author = "Lei Shi and Lin Liang and Jun Ma and Fangxiao Wang and Jianmin Sun",

year = "2014",

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doi = "10.1039/c3cy00871a",

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pages = "758--765",

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TY - JOUR

T1 - Enhanced photocatalytic activity over the Ag2O-g-C 3N4 composite under visible light

AU - Shi, Lei

AU - Liang, Lin

AU - Ma, Jun

AU - Wang, Fangxiao

AU - Sun, Jianmin

PY - 2014/3/1

Y1 - 2014/3/1

N2 - The Ag2O-g-C3N4 composite was prepared by the coprecipitation method and was well characterized by X-ray diffraction, transmission electron microscopy with energy dispersion X-ray spectroscopy, UV-vis diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, photoluminescence spectroscopy and surface photovoltage spectroscopy. The photocatalytic activities were evaluated in the degradation of Rhodamine B aqueous solution. The results showed that Ag2O sized 5-10 nm was highly anchored on the surface of the pure g-C3N4 support, causing the Ag2O-g-C3N4 composite to show stronger absorption in the visible light region and higher photocatalytic activities than pure g-C3N4 and Ag2O. The enhanced photocatalytic activities were attributed to combined effects, including highly dispersed smaller Ag2O particles, stronger visible absorption and higher charge separation efficiency. The possible mechanism for the photocatalytic activity of Ag2O-g-C3N4 was tentatively proposed.

AB - The Ag2O-g-C3N4 composite was prepared by the coprecipitation method and was well characterized by X-ray diffraction, transmission electron microscopy with energy dispersion X-ray spectroscopy, UV-vis diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, photoluminescence spectroscopy and surface photovoltage spectroscopy. The photocatalytic activities were evaluated in the degradation of Rhodamine B aqueous solution. The results showed that Ag2O sized 5-10 nm was highly anchored on the surface of the pure g-C3N4 support, causing the Ag2O-g-C3N4 composite to show stronger absorption in the visible light region and higher photocatalytic activities than pure g-C3N4 and Ag2O. The enhanced photocatalytic activities were attributed to combined effects, including highly dispersed smaller Ag2O particles, stronger visible absorption and higher charge separation efficiency. The possible mechanism for the photocatalytic activity of Ag2O-g-C3N4 was tentatively proposed.

UR - https://www.scopus.com/pages/publications/84893960721

U2 - 10.1039/c3cy00871a

DO - 10.1039/c3cy00871a

M3 - 文章

AN - SCOPUS:84893960721

SN - 2044-4753

VL - 4

SP - 758

EP - 765

JO - Catalysis Science and Technology

JF - Catalysis Science and Technology

IS - 3

ER -

Enhanced photocatalytic activity over the Ag₂O-g-C ₃N₄ composite under visible light

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