Constructing porous carbon nitride nanosheets for efficient visible-light-responsive photocatalytic hydrogen evolution
文献类型:期刊论文
作者 | Li, Tongtong2,3; Wang, Shulan3; Li, Li1; 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 |
DOI | 10.1016/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/321006/175577] |
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, Sch Met, 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, Coll Sci, Dept Chem, 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. |
入库方式: OAI收割
来源:金属研究所
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