Increasing Solar Absorption of Atomically Thin 2D Carbon Nitride Sheets for Enhanced Visible-Light Photocatalysis

doi:10.1002/adma.201807540

IMR OpenIR

	Increasing Solar Absorption of Atomically Thin 2D Carbon Nitride Sheets for Enhanced Visible-Light Photocatalysis
	Wang, Yong 1,2; Du, Peipei 3; Pan, Hongzhe 4; Fu, Lin 1,2; Zhang, Yu 1,2; Chen, Jie 1,2; Du, Youwei 1,2; Tang, Nujiang 1,2; Liu, Gang 3,5
通讯作者	Tang, Nujiang(tangnujiang@nju.edu.cn) ; Liu, Gang(gangliu@imr.ac.cn)
	2019-08-22
发表期刊	ADVANCED MATERIALS
ISSN	0935-9648
页码	8
摘要	Atomically thin 2D carbon nitride sheets (CNS) are promising materials for photocatalytic applications due to their large surface area and very short charge-carrier diffusion distance from the bulk to the surface. However, compared to their bulk counterpart, CNS' applications always suffer from an enlarged bandgap and thus narrowed solar absorption range. Here, an approach to significantly increase solar absorption of the atomically thin CNS via fluorination followed by thermal defluorination is reported. This approach can greatly increase the visible-light absorption of CNS by extending the absorption edge up to 578 nm. The modulated CNS loaded with Pt cocatalyst as a photocatalyst shows a superior photocatalytic hydrogen production activity under visible-light irradiation to Pt-CNS. Combining experimental characterization with theoretical calculations shows that this approach can introduce cyano groups into the framework of CNS as well as the accompanied nitrogen vacancies at the edges, which leads to both narrowing the bandgap and changing the charge distribution. This study will provide an effective strategy to increase solar absorption of carbon-nitride-based photocatalysts for solar energy conversion applications.
关键词	2D materials carbon nitride fluorination and defluorination photocatalysts visible light
资助者	State Key Program for Basic Research ; National Natural Science Foundation of China
DOI	10.1002/adma.201807540
收录类别	SCI
语种	英语
资助项目	State Key Program for Basic Research[2017YFA0206304] ; National Natural Science Foundation of China[51572122] ; National Natural Science Foundation of China[51825204] ; National Natural Science Foundation of China[51572266]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000483162200001
出版者	WILEY-V C H VERLAG GMBH
引用统计	被引频次：239[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/321006/135323
专题	中国科学院金属研究所
通讯作者	Tang, Nujiang; Liu, Gang
作者单位	1.Nanjing Univ, Natl Lab Solid State Microstruct, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Jiangsu, Peoples R China 2.Nanjing Univ, Jiangsu Prov Key Lab Nanotechnol, Nanjing 210093, Jiangsu, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 4.Linyi Univ, Sch Phys & Elect Engn, Linyi 276005, Shandong, Peoples R China 5.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yong,Du, Peipei,Pan, Hongzhe,et al. Increasing Solar Absorption of Atomically Thin 2D Carbon Nitride Sheets for Enhanced Visible-Light Photocatalysis[J]. ADVANCED MATERIALS,2019:8.
APA	Wang, Yong.,Du, Peipei.,Pan, Hongzhe.,Fu, Lin.,Zhang, Yu.,...&Liu, Gang.(2019).Increasing Solar Absorption of Atomically Thin 2D Carbon Nitride Sheets for Enhanced Visible-Light Photocatalysis.ADVANCED MATERIALS,8.
MLA	Wang, Yong,et al."Increasing Solar Absorption of Atomically Thin 2D Carbon Nitride Sheets for Enhanced Visible-Light Photocatalysis".ADVANCED MATERIALS (2019):8.