Construction of multifunctional electrochemical sensor based on electroactivity-adjustable poly (ionic liquids)/reduced graphene oxide

Ming-Hua Jing; Xi-Ming Song; Da-Wei Fang; Ling Zhang; Qian Zhang

doi:10.1016/j.talanta.2018.12.101

Construction of multifunctional electrochemical sensor based on electroactivity-adjustable poly (ionic liquids)/reduced graphene oxide

Talanta. 2019 May 15:197:277-283. doi: 10.1016/j.talanta.2018.12.101. Epub 2019 Jan 2.

Authors

Ming-Hua Jing¹, Xi-Ming Song², Da-Wei Fang¹, Ling Zhang³, Qian Zhang⁴

Affiliations

¹ College of Chemistry, Liaoning University, Shenyang 110036, China; Institute of Rare and Scattered Elements, College of Chemistry, Liaoning University, Shenyang 110036, China.
² College of Chemistry, Liaoning University, Shenyang 110036, China.
³ College of Chemistry and Chemical Engineering, Shenyang Normal University, Shenyang 110034, China. Electronic address: lingzhangsynu@foxmail.com.
⁴ College of Chemistry, Liaoning University, Shenyang 110036, China. Electronic address: zhangq@lnu.edu.cn.

PMID: 30771935
DOI: 10.1016/j.talanta.2018.12.101

Abstract

In this article, a novel electroactivity-adjustable poly (ionic liquids)/reduced graphene oxide (PIL-GP) was developed and utilized for the fabrication of multifunctional, high stable electrochemical sensors. The structure, morphology and surface charge properties of PIL-GP have been systematically studied. And the selective detection performance of dopamine (DA) on PIL-GP modified glassy carbon electrode (GCE) were further explored by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). More importantly, by virtue of the anion exchange property of PIL, electroactive Fe(CN)₆^3-/PIL-GP/GCE and Polyoxometalates (PWA)/PIL-GP/GCE were easily fabricated and their electrochemical detection performance of ascorbic acid (AA) and bromate were investigated respectively. The results showed that PIL-GP/GCE based electrochemical sensors provided higher sensitivity, lower detection limits and outstanding anti-interference ability in certain detection system. It was indicated that this general approach to construct electroactivity-adjustable sensors with various electroactive anions possessed a broad application prospect.

Keywords: Anion exchange; Electroactivity-adjustable; Electrochemical sensor; Graphene; Poly ionic liquid.