Preparation of Nitrogen-doped Carbon Dots from Coke Powder as a Fluorescent Chemosensor for Selective and Sensitive Detection of Cr (Ⅵ)

作     者：MENG Juan LI Shiqian DING Ling ZHOU Chuang JIANG Rui ZHANG Qingtian CHENG Zhengzai GAUTHIER Mario HU Ya WU Lin 孟娟;LI Shiqian;丁玲;ZHOU Chuang;JIANG Rui;ZHANG Qingtian;CHENG Zhengzai;GAUTHIER Mario;HU Ya;伍林

作者机构：School of Chemistry and Chemical EngineeringHubei Provincial Key Laboratory for New Processes of Ironmaking and Steel makingWuhan University of Science and TechnologyWuhan 430081China Fujian Universities and Colleges Engineering Research Center of Modern Facility Agriculture of Fujian UniversityFujian Polytechnic Normal UniversityFuqing 350300China Chemistry DepartmentUniversity of WaterlooWaterlooOntarioN2L 3G1Canada 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2022年第37卷第6期

页      面：1096-1104页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 080202[工学-机械电子工程] 070302[理学-分析化学] 0703[理学-化学] 0802[工学-机械工程] 

基　　金：by the National Nature Science Foundation of China(61904130) the Open Fund of the Fujian Universities and Colleges Engineering Research Center of Modern Facility Agriculture of Fujian University(G2-KF2002) the Opening Project of Key Laboratory of Optoelectronic Chemical Materials and Devices,Ministry of Education,Jianghan University(JDGD202017) the Open Fund of the Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steel Making(Wuhan University of Science and Technology)of China(KF-20-5) the Fund of Hangzhou Meishi Technology Co.,Ltd of China(2021420112000081) the Key Research and Development Program of Hubei Province(2020BAB084) the Program(BG20190227001)of High-end Foreign Experts of the State of the State Administration of Foreign Experts Affairs(SAFEA) 

主　　题：carbon dots nitrogen doping preparation fluorescence detection Cr(Ⅵ) 

摘      要：The nitrogen-doped carbon dots(N-CDs)were prepared by using coke powder as carbon source and one-step hydrothermal *** N-CDs were studied as a fluorescent chemosensor for determining Cr(Ⅵ)in *** selective,sensitive,reproducibility and stability of as-prepared N-CDs were *** morphology,composition and properties of N-CDs were characterized by a series of *** fluorescence quenching of N-CDs by Cr(Ⅵ)was *** experimental results reveal that the obtained N-CDs have great hydrophilicity and strong luminescence properties,which demonstrates the successful doping of nitrogen into the *** surface-active groups and emission wavelength range of CDs increase due to the electronegativity and electron donor effect of doping N ***,the N-CDs exhibit good photochemical properties for the detection of Cr(Ⅵ),including a wide linear range from 0.3 to 200μM(R^(2)=0.9935)and a low detection limit of 0.10μM at the signal-to-noise ratio of 3(S/N=3).Moreover,the N-CDs as a sensor was used successfully for Cr(Ⅵ)detection in real water samples with recovery rates of 99.9%-110.6%.This sensor also shows highly reproducibility and *** N-CDs fluorescent chemical sensor may be a potential candidate for applying in the field of other fluorescent chemical sensing,catalysis,photoelectric devices and other fields.