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

Xuejian Zheng, Ling Zhang, Luyi Huang, Wei Li, Chao Ma, Ruirui Song, Luyang Chen, Heping Zeng

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

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-Hg 2+ -thymine interaction and an applied voltage that pushed mercury ions toward the NPG film improved both the speed and sensitivity of Hg 2+ 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.

Original languageEnglish
Pages (from-to)6175-6179
Number of pages5
JournalACS Omega
Volume4
Issue number4
DOIs
StatePublished - 2 Apr 2019
Externally publishedYes

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