Issue 9, 2013

Synthesis of graphenenanosheets with incorporated silver nanoparticles for enzymeless hydrogen peroxide detection

Abstract

Herein, we report on the production of poly(diallydimethylammonium chloride) (PDDA) functionalized reduced graphene oxide (PDDA-rGO) with the use of PDDA as a reducing and stabilizing agent. Atomic force microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy were used to characterize the resulting PDDA-rGO nanosheets. The PDDA-rGO nanosheets could be modified with Ag nanoparticles (AgNPs) by direct adsorption of preformed, negatively charged AgNPs. It was found that the AgNPs were distributed uniformly on the PDDA-rGO nanosheets and the obtained PDDA-rGO/AgNPs nanocomposites exhibited prominent electrocatalytic activity for the detection of hydrogen peroxide (H2O2) with a wide linear range from 100 μM to 41 mM (r = 0.997) and a rapid response upon the addition of H2O2. The detection limit was estimated to be 35 μM. Furthermore, the fabricated nonenzymatic H2O2 electrochemical sensor demonstrated excellent stability and reproducibility.

Graphical abstract: Synthesis of graphene nanosheets with incorporated silver nanoparticles for enzymeless hydrogen peroxide detection

Supplementary files

Article information

Article type
Paper
Submitted
27 Nov 2012
Accepted
07 Mar 2013
First published
07 Mar 2013

Anal. Methods, 2013,5, 2298-2304

Synthesis of graphene nanosheets with incorporated silver nanoparticles for enzymeless hydrogen peroxide detection

X. Liu, X. Xu, H. Zhu and X. Yang, Anal. Methods, 2013, 5, 2298 DOI: 10.1039/C3AY26458K

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