碳量子点/纳米金复合物的合成及其对重金属离子的特异性检测  

Synthesis of carbon quantum dots/gold nanocomposites and its application in the detection of heavy metal ions

作　　者：林志诚 纪林彤 蒋力豪 胡娟 林建原[1] 陈亮 白春节[1] 董文洁 LIN Zhicheng;JI Lintong;JIANG Lihao;HU Juan;LIN Jianyuan;CHEN Liang;BAI Chunjie;DONG Wenjie(Zhejiang Wanli University,Ningbo 315100,China)

机构地区：[1]浙江万里学院,浙江宁波315100

出　　处：《印染助剂》2024年第11期21-25,共5页Textile Auxiliaries

基　　金：浙江省“生物工程”一流学科(A类)(KF2024003,CX2023018);宁波市特色农产品质量安全检测与控制重点实验室开放课题(KF202309);2023年浙江省大学生科技创新活动计划暨新苗人才计划(2023R419005);国家级大学生创新创业训练计划项目(202210876046,202110876035,S202310876023,S202310876091)。

摘　　要：碳量子点/纳米金复合物用于检测印染废水中的铅离子。碳量子点/纳米金优化合成条件为:温度180℃,时间6 h。对合成的碳量子点/纳米金复合物进行红外光谱、紫外光谱、X射线光电子能谱结构表征。加入谷胱甘肽后,碳点会发生红色-蓝色-红色的颜色变化,可用于铅离子(Pb^(2+))的可视分析。铅离子的线性回归方程为:y=-42.07x+302.43,R^(2)=0.9941,检出限为0.19μg/L。将该碳量子点/纳米金复合物用于印染废水中Pb^(2+)的快速检测,加标回收率为95.5%~101.6%,方法简便、快捷。Carbon quantum dots/gold nanocomposites were used to detect lead ions in printing and dye⁃ing wastewater.The optimum synthesis conditions of carbon quantum dots/gold nanoparticles were as fol⁃lows:temperature 180℃,time 6 h.The structure of the synthesized carbon quantum dots nano-gold was characterized by infrared,ultraviolet and X-ray photoelectron spectroscopy.After glutathione was added,the carbon points undergo a red-blue-red color change,which could be used for visual analysis of lead ions(Pb^(2+)).The linear equation was y=-42.07x+302.43,R^(2)=0.9941,and the detection limit was 0.19μg/L.The recoveries were 95.5%-101.6%,indicating that the method was simple and quick.

关 键 词：碳量子点 纳米金 谷胱甘肽 Pb^(2+) 

分 类 号：O657[理学—分析化学]