Constructing CdSe QDs modified porous g-C3N4 heterostructures for visible light photocatalytic hydrogen production | |
Zhang, Zheng2; Kang, Yuyang3,4; Yin, Li-Chang3,4; Niu, Ping1; Zhen, Chao3,4; Chen, Runze3,5; Kang, Xiangdong3,4; Wu, Fayu2; Liu, Gang3,4 | |
刊名 | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY |
2021-12-30 | |
卷号 | 95页码:167-171 |
关键词 | CdSe QDs Heterostructure Photocatalytic water splitting |
ISSN号 | 1005-0302 |
DOI | 10.1016/j.jmst.2021.02.068 |
通讯作者 | Kang, Yuyang(yykang@imr.ac.cn) ; Wu, Fayu(fayuwu@ustl.edu.cn) ; Liu, Gang(gangliu@imr.ac.cn) |
英文摘要 | Constructing heterostructures with narrow-band-gap semiconductors is a promising strategy to extend light absorption range of graphitic carbon nitride (g-C 3 N 4 ) and simultaneously promote charge separation for its photocatalytic activity improvement. However, its highly localized electronic states of g-C 3 N 4 hinder photo-carrier migration through bulk towards heterostructure interfaces, resulting in low charge carrier separation efficiency of solid bulk g-C 3 N 4 -based heterostructures. Herein, porous g-C 3 N 4 (PCN) material with greatly shortened migration distance of photo-carriers from bulk to surface was used as an effective substrate to host CdSe quantum dots to construct type II heterostructure of CdSe/PCN for photocatalytic hydrogen production. The homogeneous modification of the CdSe quantum dots throughout the whole bulk of PCN together with proper band alignments between CdSe and PCN enables the effective separation of photo-generated charge carriers in the heterostructure. Consequently, the CdSe/PCN heterostructure photocatalyst gives the greatly enhanced photocatalytic hydrogen production activity of 192.3 mu mol h -1 , which is 4.4 and 8.1 times that of CdSe and PCN, respectively. This work provides a feasible strategy to construct carbon nitride-based heterostructure photocatalysts for boosting visible light driven water splitting performance. (c) 2021 Published by Elsevier Ltd on behalf of Chinese Society for Metals. |
资助项目 | National Nat-ural Science Foundation of China[52002377] ; National Nat-ural Science Foundation of China[51825204] ; National Nat-ural Science Foundation of China[21633009] ; China Postdoctoral Science Foundation[2020M681003] ; China Postdoctoral Science Foundation[2020TQ0327] ; Natural Science Founda-tion of Liaoning Province[2020BS009] |
WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
语种 | 英语 |
出版者 | JOURNAL MATER SCI TECHNOL |
WOS记录号 | WOS:000733965200006 |
资助机构 | National Nat-ural Science Foundation of China ; China Postdoctoral Science Foundation ; Natural Science Founda-tion of Liaoning Province |
内容类型 | 期刊论文 |
源URL | [http://ir.imr.ac.cn/handle/321006/173841] |
专题 | 金属研究所_中国科学院金属研究所 |
通讯作者 | Kang, Yuyang; Wu, Fayu; Liu, Gang |
作者单位 | 1.Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China 2.Univ Sci & Technol Liaoning, Sch Mat & Met, Anshan 114051, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 4.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 5.Northeastern Univ, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Zheng,Kang, Yuyang,Yin, Li-Chang,et al. Constructing CdSe QDs modified porous g-C3N4 heterostructures for visible light photocatalytic hydrogen production[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2021,95:167-171. |
APA | Zhang, Zheng.,Kang, Yuyang.,Yin, Li-Chang.,Niu, Ping.,Zhen, Chao.,...&Liu, Gang.(2021).Constructing CdSe QDs modified porous g-C3N4 heterostructures for visible light photocatalytic hydrogen production.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,95,167-171. |
MLA | Zhang, Zheng,et al."Constructing CdSe QDs modified porous g-C3N4 heterostructures for visible light photocatalytic hydrogen production".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 95(2021):167-171. |
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