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

文献类型：期刊论文

作者Zhang, Weimin1,2; Du, Jinhong1,2; Liu, Zhibo1; Zhang, Dingdong1; Wei, Qinwei1,2; Liu, Haichao1; Ma, Wei1,2; Ren, Wencai1,2; Cheng, Hui-Ming1,2,3
刊名CARBON
出版日期2019-12-01
卷号155页码:243-249
ISSN号0008-6223
DOI10.1016/j.carbon.2019.08.067
通讯作者Ren, Wencai(wcren@imr.ac.cn) ; Cheng, Hui-Ming(cheng@imr.ac.cn)
英文摘要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
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:000491864400029
资助机构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
源URL[http://ir.imr.ac.cn/handle/321006/136824]  
专题金属研究所_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.

入库方式： OAI收割

来源：金属研究所

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