Detection of lead Using Thioglycolic Acid Capped ZnSe and ZnSe@ZnS core-shell Quantum Dots

摘要：

　　Herein,we proffer a sensitive and selective sensor using ZnSe and ZnSe@ZnS quantum dots(QDs),for detection of toxic metal ions at nm level.It has been found that the TGA capped ZnSe and ZnSe@ZnS QDs were apparently sensitive to Pb2+ions as perceptible from their fluorescence quenching measurements.However,in case of few common heavy metal ions such as Zn2+,Co2+,Fe2+,,Mg2+,Cu2+,Ni2+and Cd2+ions,negligible quenching compared to Pb2+ions was noted.Hence,we have successfully detected Pb2+ions in aqueous solutions based on the photoluminescence(PL)spectroscopy.The observed linearity range was from 10 NM to 100 nM for both Pb2+ions.An alternative QD based sensor for the spectroscopic detection,and concentration quantification of Pb2+ions is proposed.Keywords: Quantum dots,Photoluminescence,Metal ions,Thioglycolic acid,Core-shell QDs.

作者: Irshad Ahmad Mir Qixiao Lu Yuelin Xie Ling Zhu Xinzhong Wang

作者单位: Shenzhen Key Laboratory of Flexible Memory Materials and Devices,College of Electronic Science and T School of Electronic Communication and Technology,Shenzhen Institute of Information Technology,Shenz

会议类型: 国际会议

会议名称: The 2nd International Symposium on Application of Materials Science and Energy Materials (SAMSE 2018) 第二届材料科学应用与能源材料国际研讨会2018年

会议地点: 上海

会议语种:英文

页码: 1-4

在线出版日期: 2018-12-17（万方平台首次上网日期，不代表论文的发表时间）