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Preparation and characterization of mesoporous g-C3N4/SiO2 material with enhanced photocatalytic activity

Published online by Cambridge University Press:  11 April 2019

Li Peng ,
Zi-wei Li ,
Ren-rong Zheng ,
Hui Yu Open the ORCID record for Hui Yu [Opens in a new window]  and
Xiang-ting Dong
Li Peng
Affiliation:
School of Chemistry & Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, People’s Republic of China
Zi-wei Li
Affiliation:
School of Chemistry & Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, People’s Republic of China
Ren-rong Zheng
Affiliation:
School of Chemistry & Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, People’s Republic of China
Hui Yu*
Affiliation:
School of Chemistry & Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, People’s Republic of China
Xiang-ting Dong
Affiliation:
School of Chemistry & Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, People’s Republic of China
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Composite materials include various components with different structures, which cooperatively increase their properties and extend their application. In this study, the graphitic carbon nitride (g-C3N4) guest material was assembled into the porous of the SiO2 aerogel, which was prepared during the gel process. By this way, the g-C3N4 could be absolutely encapsulated into the porous of the disordered porous SiO2 aerogel. The prepared g-C3N4/SiO2 composite had a loose porous structure and exhibited the much higher photocatalytic activity to the photodegradation of rhodamine B (RhB) under visible light. The disordered porous structure enhanced photocatalytic activity, and the degradation rate reached to 96.42% in 90 min under the irradiation of visible light, which could be attributed to its high surface area and effective electron–hole separation rate. The catalyst had the much higher stability and could be easily recycled utilization. The prepared composites could be applied to degrade organic pollutants in wastewater.

Keywords

SiO2 aerogelg-C3N4g-C3N4/SiO2 compositephotocatalytic degradationrhodamine Bvisible light
Type
Article
Information
Journal of Materials Research , Volume 34 , Issue 10 , 28 May 2019 , pp. 1785 - 1794
Copyright
Copyright © Materials Research Society 2019 

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