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

doi:10.1016/j.jcis.2022.08.049

IMR OpenIR

	Constructing porous carbon nitride nanosheets for efficient visible-light-responsive photocatalytic hydrogen evolution
	Li, Tongtong 1,2; Wang, Shulan 1; Li, Li 3; Zhu, Huaze 2; Yang, Yongqiang 2; Liu, Gang 2
通讯作者	Li, Li(lilicmu@alumni.cmu.edu) ; Yang, Yongqiang(yqyang@imr.ac.cn)
	2022-12-15
发表期刊	JOURNAL OF COLLOID AND INTERFACE SCIENCE
ISSN	0021-9797
卷号	628 页码:214-221
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.
关键词	Photocatalyst Charge separation Transfer distance Carbon nitride Porosity Nanosheet
资助者	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
DOI	10.1016/j.jcis.2022.08.049
收录类别	SCI
语种	英语
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
WOS类目	Chemistry, Physical
WOS记录号	WOS:000863171300003
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/175574
专题	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.