水回流法提取煤基碳点及其荧光性能应用研究  

Research on the extraction of coal-based carbon dots by water reflux method and their fluorescence properties

作　　者：刘雅雯 董付涛 安迪娜·艾萨江 韩荣[2] 冯剑 任铁真 Liu Yawen;Dong Futao;Ankira Aysajan;Han Rong;Feng Jian;Ren Tiezhen(State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources,Key Laboratory of Coal Clean Conversion&Chemical Engineering Process(Xinjiang Uyghur Autonomous Region),School of Chemical Engineering and Technology,Xinjiang University,Urumqi 830046;Xinjiang Industry Technical College,Urumqi 830021)

机构地区：[1]省部共建碳基能源资源化学与利用国家重点实验室,煤炭清洁转化与化工过程新疆维吾尔自治区重点实验室,新疆大学化工学院,乌鲁木齐830046 [2]新疆轻工职业技术学院,乌鲁木齐830021

出　　处：《化工新型材料》2024年第S01期412-417,共6页New Chemical Materials

基　　金：国家级大学生创新训练计划项目(202210755030)。

摘　　要：通过水回流法从3种煤中提取出了煤基碳点,对水溶剂回流时间与用量进行了工艺优化,所制备碳点具有蓝色荧光特征,通过红外表征确认了煤基碳点表面具有O—H、C O、C—H等官能团,通过时间分辨荧光光谱计算出煤基碳点的荧光寿命为2.2μs。同时探究了3种煤基碳点在离子检测中的实际应用,它们作为荧光探针在与Fe^(3+)或Cu ^(2+)结合时会发生荧光淬灭,并且反应迅速,其中CCD-W1对Fe^(3+)和Cu^(2+)的检出限最低,检出限分别为0.16μmol/L和0.10μmol/L。In this paper,coal-based carbon dots were extracted from three kinds of coals by water reflux method,and the reflux time and dosage of water solvent were optimized.The prepared carbon dots had blue fluorescence characteristics.It was confirmed by FT-IR spectrum that the surface of coal-based carbon dots had O—H,C O,C—H and other functional groups.The fluorescence lifetime of the coal-based carbon dots was calculated as 2.2μs through time-resolved fluorescence spectroscopy.At the same time,the practical application of three coal-based carbon dots in ion detection was explored.As fluorescent probes,their fluorescence would quench when combined with Fe^(3+)or Cu^(2+),and the reaction was rapid.Among them,CCD-W1 had the lowest detection limits for Fe^(3+)and Cu^(2+),which were 0.16μmol/L and 0.10μmol/L,respectively.

关 键 词：煤炭 水回流法 碳点 荧光探针 FE3+ 和Cu 2+ 检测 

分 类 号：TQ536[化学工程—煤化学工程]