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Constructing porous carbon nitride nanosheets for efficient visible-light-responsive photocatalytic hydrogen evolution

文献类型：期刊论文

作者Li, Tongtong1,2; Wang, Shulan1; Li, Li3; Zhu, Huaze2; Yang, Yongqiang2; Liu, Gang2
刊名JOURNAL OF COLLOID AND INTERFACE SCIENCE
出版日期2022-12-15
卷号628页码:214-221
ISSN号0021-9797
关键词Photocatalyst Charge separation Transfer distance Carbon nitride Porosity Nanosheet
DOI10.1016/j.jcis.2022.08.049
通讯作者Li, Li(lilicmu@alumni.cmu.edu) ; Yang, Yongqiang(yqyang@imr.ac.cn)
英文摘要The photocatalytic performance of polymeric carbon nitride (CN) is mainly restricted by the poor mass charge separation efficiency and poor light absorption due to its polymeric nature. The conventional strategies to address these problems involved constructing a nanosheets structure would result in a blue shifted light absorption and increased exciton binding energy. Here, with combination of ammonia etch-ing and selectively hydrogen-bond breaking, holey carbon nitride nanosheets (hCNNS) were constructed, thus widening the light absorption range, and spontaneously shortening the migration distance of elec-trons and holes in the lateral and vertical directions, respectively. Further analysis also found out the reserved atomic structure order endowed hCNNS with the relatively high redox potential. When irradi-ated with visible light (k > 420 nm) and loaded with 3 wt% Pt as the cocatalyst, the hydrogen evolution rate of hCNNS was about 40 times higher than the bulk CN, and the apparent quantum yield (AQY) of hCNNS is 1.47% at 435 +/- 15 nm. We expect this research can provide a new sight for achieving highly effi-cient solar utilization of CN-based photocatalysts.(c) 2022 Elsevier Inc. All rights reserved.
资助项目National Natural Science Foundation of China[52072379] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2022190] ; Young Talent Project of Shenyang National Laboratory for Materials Science ; IMR Introducing Outstand- ing Scholars project
WOS研究方向Chemistry
语种英语
出版者ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号WOS:000863171300003
资助机构National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Young Talent Project of Shenyang National Laboratory for Materials Science ; IMR Introducing Outstand- ing Scholars project
源URL[http://ir.imr.ac.cn/handle/321006/175573]  
专题金属研究所_中国科学院金属研究所
通讯作者Li, Li; Yang, Yongqiang
作者单位1.Northeastern Univ, Coll Sci, Dept Chem, Shenyang 110819, Liaoning, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China
3.Northeastern Univ, Sch Met, Shenyang 110819, Liaoning, Peoples R China
推荐引用方式
GB/T 7714		 Li, Tongtong,Wang, Shulan,Li, Li,et al. Constructing porous carbon nitride nanosheets for efficient visible-light-responsive photocatalytic hydrogen evolution[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2022,628:214-221.
APA Li, Tongtong,Wang, Shulan,Li, Li,Zhu, Huaze,Yang, Yongqiang,&Liu, Gang.(2022).Constructing porous carbon nitride nanosheets for efficient visible-light-responsive photocatalytic hydrogen evolution.JOURNAL OF COLLOID AND INTERFACE SCIENCE,628,214-221.
MLA Li, Tongtong,et al."Constructing porous carbon nitride nanosheets for efficient visible-light-responsive photocatalytic hydrogen evolution".JOURNAL OF COLLOID AND INTERFACE SCIENCE 628(2022):214-221.

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来源：金属研究所

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