Synthesis of Ordered Mesoporous Carbon/Graphitic Carbon Nitride (g-C3N4) Composites with Enhanced Visible-light-driven Photocatalytic Activity

In this paper, ordered mesoporous carbon (OMC)/graphitic carbon nitride (g-C3N4) composites were synthesized by a simple low-temperature thermal method. The structural properties of the OMC/g-C3N4 composites were characterized by XRD, N2 adsorption–desorption isotherms, and UV–vis diffuse reflectanc...

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Bibliographic Details
Published in:Chemistry letters 2015-03, Vol.44 (3), p.348-350
Main Authors: Chen, Liangxia, Tao, Hong, Pang, Tao, Dong, Jifeng, Song, Xiaofeng
Format: Article
Language:English
Subjects:
Carbon
Carbon nitride
Diffusion
Expansion
Photocatalysis
Reflectance
Specific surface
Stacking
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Summary:In this paper, ordered mesoporous carbon (OMC)/graphitic carbon nitride (g-C3N4) composites were synthesized by a simple low-temperature thermal method. The structural properties of the OMC/g-C3N4 composites were characterized by XRD, N2 adsorption–desorption isotherms, and UV–vis diffuse reflectance spectroscopy. It was found that the addition of OMC slightly affected the graphitic stacking structures of g-C3N4, but strongly enlarged the surface area and total pore volume of OMC/g-C3N4 composites. The photodegradation of rhodamine B (RhB) and 2,4-dichlorophenol (2,4-DCP) under visible light irradiation was tested. The photocatalytic efficiencies of the 0.04-OMC/g-C3N4 composite over RhB and 2,4-DCP were about 2.41 times and 3.68 times as high as those of g-C3N4, respectively. It is deduced that the enhanced photocatalytic activity should be attributed to the larger specific surface area and favorable optical property.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.141072