Journal of Solid State Electrochemistry

, Volume 17, Issue 1, pp 167–173

A method based on electrodeposition of reduced graphene oxide on glassy carbon electrode for sensitive detection of theophylline

Original Paper

DOI: 10.1007/s10008-012-1867-4

Cite this article as:
Cui, F. & Zhang, X. J Solid State Electrochem (2013) 17: 167. doi:10.1007/s10008-012-1867-4

Abstract

Graphene nanosheets were directly electrodeposited onto a glassy carbon electrode (GCE) from the electrolyte solution containing graphene oxide (GO); the resulting electrode (ED-GO/GCE) was characterized with scanning electron microscopy. A simple and rapid electrochemical method was developed for the determination of theophylline (TP), based on the excellent properties of ED-GO film. The result indicated that ED-GO film-modified GCE exhibited efficient electrocatalytic oxidation for TP with relatively high sensitivity and stability. The electrochemical behavior of TP at ED-GO/GCE was investigated in detail. Under the optimized conditions, the oxidation peak current was proportional to the TP concentration in the range of 8.0 × 10−7 to 6.0 × 10−5 mol L−1 with the detection limit of 1.0 × 10−7 mol L−1 (S/N = 3). The proposed method was successfully applied to green tea samples with satisfactory results.

Keywords

Electrodeposition Graphene Theophylline Electrochemical sensor 

Supplementary material

10008_2012_1867_MOESM1_ESM.doc (28 kb)
ESM 1(DOC 27.5 kb)

Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  1. 1.School of Chemistry and Chemical EngineeringShandong UniversityJinanChina

Personalised recommendations