INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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A new sulfur-doped source and synergistic effect with nitrogen for carbon dots produced from glucose |
Lige Fu(付丽歌)1, Yuehong Yin(殷月红)1, Guohua Cao(曹国华)1, Pingping Wu(武苹苹)1, Jian Wang(汪舰)1, Lingling Yan(闫玲玲)1, Baoqing Zhang(张宝庆)2, Ming Li(李明)1 |
1 School of Physics and Electronic Information, Henan Polytechnic University, Jiaozuo 454000, China; 2 School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China |
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Abstract The nitrogen and sulfur co-doped carbon dots (N, S-CDs) with increased luminescence were synthesized by a hydrothermal process in one green pot by using glucose, and a new sulfur-doping source of sodium sulfite was developed. The synergistic effect of the N and S groups was well discussed through the structure analysis of Fourier transform infrared spectra and x-ray photoelectron spectra. The surface states of N, S-CDs embody more complicated functional groups, and S element exists as -SSO3, -C-SO3, and SO42- groups due to the introduction of sodium sulfite. The sulfur-containing groups passivate the surface of the CDs, and the relatively high sulfur groups may reduce the non-radiation centers. The fluorescence is affected by the hydroxyl group of the solvent. The quenching of Fe3+ ion to fluorescence and the sensitivity of fluorescence to pH were also investigated.
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Received: 15 August 2019
Revised: 29 September 2019
Accepted manuscript online:
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PACS:
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81.05.U-
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(Carbon/carbon-based materials)
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81.07.-b
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(Nanoscale materials and structures: fabrication and characterization)
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42.70.-a
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(Optical materials)
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Fund: Project by the National Natural Science Foundation of China (Grant Nos. 51571085, 11805052, and 61705062), the Research Project for Basic and Forefront Technology of Henan Province, China (Grant No. 162300410219), and the Doctor Foundation of Henan Polytechnic University, China (Grant No. B2014049). |
Corresponding Authors:
Yuehong Yin, Guohua Cao
E-mail: yuehongyin@126.com;ghcao@hpu.edu.cn
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Cite this article:
Lige Fu(付丽歌), Yuehong Yin(殷月红), Guohua Cao(曹国华), Pingping Wu(武苹苹), Jian Wang(汪舰), Lingling Yan(闫玲玲), Baoqing Zhang(张宝庆), Ming Li(李明) A new sulfur-doped source and synergistic effect with nitrogen for carbon dots produced from glucose 2019 Chin. Phys. B 28 128102
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