Production of carbon dots during the liquid phase exfoliation of MoS2 quantum dots

doi:10.1016/j.carbon.2019.08.067

IMR OpenIR

	Production of carbon dots during the liquid phase exfoliation of MoS2 quantum dots
	Zhang, Weimin 1,2; Du, Jinhong 1,2; Liu, Zhibo 1; Zhang, Dingdong 1; Wei, Qinwei 1,2; Liu, Haichao 1; Ma, Wei 1,2; Ren, Wencai 1,2; Cheng, Hui-Ming 1,2,3
通讯作者	Ren, Wencai(wcren@imr.ac.cn) ; Cheng, Hui-Ming(cheng@imr.ac.cn)
	2019-12-01
发表期刊	CARBON
ISSN	0008-6223
卷号	155 页码:243-249
摘要	N-methyl-2-pyrrolidone (NMP) has been widely used as a solvent for preparing two-dimensional quantum dots (2D-QDs) by probe sonication. Here we found that carbon dots (CDs) are simultaneously produced by the carbonization of NMP when preparing MoS2 QDs in a NMP solvent by probe sonication. These two kinds of QDs are similar in color, crystal structure, excitation wavelength dependent photoluminescence (PL), and have overlaps in their absorption spectra and coincidence of PL peaks. As a result, the co-production of CDs has not previously been recognized. The CDs show strong optical interactions with the MoS2 QDs, which leads to a dramatic decrease in the fluorescence intensity of the CDs/MoS2 QDs. Moreover, we found that the carbonization also occurs for the commonly used organic solvents. These findings suggest that associated production of CDs should be considered when preparing 2D-QDs by probe sonication, and the resulting hybrid CDs/2D-QDs will provide opportunities to design their properties and uses. (C) 2019 Elsevier Ltd. All rights reserved.
资助者	Ministry of Science and Technology of China ; National Science Foundation of China ; Postdoctoral Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Liaoning Revitalization Talents Program ; Economic, Trade and Information Commission of Shenzhen Municipality for the 2017 Graphene Manufacturing Innovation Center Project
DOI	10.1016/j.carbon.2019.08.067
收录类别	SCI
语种	英语
资助项目	Ministry of Science and Technology of China[2016YFA0200101] ; National Science Foundation of China[51325205] ; National Science Foundation of China[51290273] ; National Science Foundation of China[51572265] ; National Science Foundation of China[51861135201] ; Postdoctoral Science Foundation of China[2018M630309] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB30000000] ; Liaoning Revitalization Talents Program[XLYC1808013] ; Economic, Trade and Information Commission of Shenzhen Municipality for the 2017 Graphene Manufacturing Innovation Center Project[201901171523]
WOS研究方向	Chemistry ; Materials Science
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary
WOS记录号	WOS:000491864400029
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：14[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/321006/136825
专题	中国科学院金属研究所
通讯作者	Ren, Wencai; Cheng, Hui-Ming
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 3.Tsinghua Univ, Shenzhen Geim Graphene Ctr, Tsinghua Berkeley Shenzhen Inst, 1001 Xueyuan Rd, Shenzhen 518055, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Weimin,Du, Jinhong,Liu, Zhibo,et al. Production of carbon dots during the liquid phase exfoliation of MoS2 quantum dots[J]. CARBON,2019,155:243-249.
APA	Zhang, Weimin.,Du, Jinhong.,Liu, Zhibo.,Zhang, Dingdong.,Wei, Qinwei.,...&Cheng, Hui-Ming.(2019).Production of carbon dots during the liquid phase exfoliation of MoS2 quantum dots.CARBON,155,243-249.
MLA	Zhang, Weimin,et al."Production of carbon dots during the liquid phase exfoliation of MoS2 quantum dots".CARBON 155(2019):243-249.