Functionalization of cellulose carbon dots with different elements(N,B and S)for mercury ion detection and anti-counterfeit applications

作     者：Xiaoning Li Quanyu Shi Meng Li Ningxin Song Yumeng Xiao Huining Xiao Tony D.James Lei Feng Xiaoning Li;Quanyu Shi;Meng Li;Ningxin Song;Yumeng Xiao;Huining Xiao;Tony D.James;Lei Feng

作者机构：Second Affiliated Hospital of Dalian Medical UniversityDalian 116023China Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants ControlDepartment of Environmental Science and EngineeringNorth China Electric Power UniversityBaoding 071003China Department of Chemical Engineering and Limerick Pulp&Paper CentreUniversity of New Brunswick15 Dineen DriveFredericton NB E3B 5A3Canada Department of ChemistryUniversity of BathBath BA27AYUnited Kingdom School of Chemistry and Chemical EngineeringHenan Normal UniversityXinxiang 453007China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2024年第35卷第7期

页      面：355-359页

核心收录：

学科分类：082803[工学-农业生物环境与能源工程] 081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0828[工学-农业工程] 070302[理学-分析化学] 0804[工学-仪器科学与技术] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China(Nos.52370110 and 21607044) supported by the Fundamental Research Funds for the Central Universities(No.2023MS146) the Open Research Fund of the School of Chemistry and Chemical Engineering,Henan Normal University for support(Nos.2020ZD01 and 2021YB07) 

主　　题：Carbon dots Functional groups Hg^(2+)detection Mechanism Anti-counterfeiting 

摘      要：Mercury ion(Hg^(2+)),as one of the most toxic heavy metal ions,accumulates easily in the environment,which can generate potential hazards to the ecosystem and human *** effectively detect and remove Hg^(2+),we fabricated four types of carbon dots(CDs)using carboxymethyl nanocellulose as a carbon source doped with different elements using a hydrothermal *** the CDs exhibited a strong fluorescence emission,excitation-dependent emission and possessed good water ***,the four fluorescent CDs were used for Hg^(2+)recognition in aqueous solution,where the CDs-N exhibited better sensitivity and selectivity for Hg^(2+)detection,with a low limit of detection of 8.29×10^(-6)mol/*** was determined that the fluorescence quenching could be ascribed to a photoinduced charge-transfer processes between Hg^(2+)and the *** addition,the CDs-N were used as a smart invisible ink for anticounterfeiting,information encryption and ***,the CDs-N were immersed into a cellulose(CMC)-based hydrogel network to prepare fluorescent hydrogels capable of simultaneously detecting and adsorbing Hg^(2+).We anticipate that this research will open possibilities for a green method to synthesize fluorescent CDs for metal ion detection and fluorescent ink production.