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Title:
Metal-free g-C3N4 photocatalyst by sulfuric acid activation for selective aerobic oxidation of benzyl alcohol under visible light
Author: Zhang, Ligang1,2; Liu, Di1,3; Guan, Jing1; Chen, Xiufang1; Guo, Xingcui1; Zhao, Fuhua1,2; Hou, Tonggang1; Mu XinDong(牟新东)1
Source: MATERIALS RESEARCH BULLETIN
Issued Date: 2014-11-01
Volume: 59, Issue:1, Pages:84-92
Keyword: Nitrides ; Nanostructures ; Semiconductors ; Optical properties ; Catalytic properties
DOI: 10.1016/j.materresbull.2014.06.021
DOC Type: Article
English Abstract:

In this work, modification of graphitic carbon nitride photocatalyst with acid was accomplished with a facile method through reflux in different acidic substances. The g-C3N4-based material was found to be a metal-free photocatalyst useful for the selective oxidation of benzyl alcohol with dioxygen as the oxidant under visible light irradiation. Acid modification had a significant influence on the photocatalytic performance of g-C3N4. Among all acid tested, sulfuric acid-modified g-C3N4 showed the highest catalytic activity and gave benzaldehyde in 23% yield for 4 h under visible light irradiation, which was about 2.5 times higher than that of g-C3N4. The acid modification effectively improved surface area, reduced structural size, enlarged band gap, enhanced surface chemical state, and facilitated photoinduced charge separation, contributing to the enhanced photocatalytic activity. It is hoped that our work can open promising prospects for the utilization of metal free g-C3N4-based semiconductor as visible-light photocatalyst for selective organic transformation. (C) 2014 Elsevier Ltd. All rights reserved.

WOS Headings: Science & Technology ; Technology
WOS Subject: Materials Science, Multidisciplinary
WOS Subject Extended: Materials Science
WOS Keyword Plus: GRAPHITIC CARBON NITRIDE ; HYDROGEN EVOLUTION ; EFFICIENT CATALYSTS ; MESOPOROUS SILICA ; WATER ; CHEMISTRY ; POLYMERS ; OXYGEN ; NANOCOMPOSITES ; TRANSFORMATION
Indexed Type: SCI
Language: 英语
WOS ID: WOS:000342956000014
Citation statistics:
Content Type: 期刊论文
URI: http://ir.qibebt.ac.cn/handle/337004/6360
Appears in Collections:绿色化学催化团队_期刊论文

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description.institution: 1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Key Lab Biobased Mat, Qingdao 266101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Ocean Univ China, Qingdao 266003, Peoples R China

Recommended Citation:
Zhang, Ligang,Liu, Di,Guan, Jing,et al. Metal-free g-C3N4 photocatalyst by sulfuric acid activation for selective aerobic oxidation of benzyl alcohol under visible light[J]. MATERIALS RESEARCH BULLETIN,2014,59(1):84-92.
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