Optical Sensor Assistant with Voltage Enrichment for Ultrasensitive Detection of Mercury Ions

被引：7
|
作者：
Zheng, Xuejian [1 ]
Zhang, Ling [1 ,2 ]
Huang, Luyi [1 ]
Li, Wei [1 ]
Ma, Chao [1 ]
Song, Ruirui [2 ]
Chen, Luyang [3 ]
Zeng, Heping [1 ]
机构：
[1] Univ Shanghai Sci & Technol, Shanghai Key Lab Modern Opt Syst, Engn Res Ctr Opt Instrument & Syst, Minist Educ Sch Opt Elect & Comp Engn, Shanghai 200093, Peoples R China
[2] Tsinghua Univ, Yangtze Delta Reg Inst, Jiaxing 314000, Zhejiang, Peoples R China
[3] East China Univ Sci & Technol, Key Lab Ultrafine Mat, Minist Educ, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China
来源：
ACS OMEGA | 2019年 / 4卷 / 04期
基金：
中国国家自然科学基金;
关键词：
ENHANCED RAMAN-SCATTERING; ELECTROCHEMICAL SENSOR; COLORIMETRIC DETECTION; CHARACTERISTIC LENGTH; HG2+; PRECONCENTRATION;
D O I：
10.1021/acsomega.8b03505
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Voltage enrichment-assisted surface-enhanced resonance Raman scattering (SERRS) was employed for monitoring mercury(II) ions based on a nanoporous gold (NPG)/aptamer hybrid sensor. The hybrid sensor based on the coordination chemistry of thymine-Hg2+-thymine interaction and an applied voltage that pushed mercury ions toward the NPG film improved both the speed and sensitivity of Hg2+ ion detection. The detection limit can reach 0.1 pM, even in the aqueous solution containing 13 metal ions, and the sensor also possesses a fine reproducibility and stability, promising great potential in real-time sensing applications.
引用
收藏
页码：6175 / 6179
页数：5
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