Graphene nanosheets modified glassy carbon electrode as a highly sensitive and selective voltammetric sensor for rutin

Haijun Du, Jianshan Ye, Jiaqi Zhang, Xiaodan Huang, Chengzhong Yu

Research output: Contribution to journalArticlepeer-review

50 Scopus citations

Abstract

Graphene nanosheets modified glassy carbon electrode (GNs/GCE) was fabricated as voltammetric sensor for rutin with good sensitivity, selectivity and reproducibility. The sensor exhibits an adsorption-controlled, reversible twoproton and two electron transfer reaction for the oxidation of rutin with a peak-to-peak separation (ΔEp) of 26 mV as revealed by cyclic voltammetry. Moreover, the redox peak current increased about 14 times than that on bare glassy carbon electrode (GCE). The linear response of the sensor is from 1×10-7 to 1×10-5 M with a detection limit of 2.1 × 10-8 M (S/N = 3). The method was successfully applied to determine rutin in tablets with satisfied recovery.

Original languageEnglish
Pages (from-to)2399-2406
Number of pages8
JournalElectroanalysis
Volume22
Issue number20
DOIs
StatePublished - Oct 2010
Externally publishedYes

Keywords

  • Electrocatalysis
  • Graphene nanosheets
  • Rutin
  • Sensors
  • Stripping differential pulse voltammetry

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