Issue 4, 2016

Photo-reduction assisted synthesis of MnO2/reduced graphene oxide/P25 for electrochemical detection of hydrogen peroxide

Abstract

In this work, we report the synthesis of MnO2/RGO (reduced graphene oxide)/P25 nanocomposites for a non-enzymatic hydrogen peroxide sensor. MnO2/RGO/P25 nanocomposites were synthesized with a photo-reduction approach and characterized by field emission scanning electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy and Raman spectroscopy. A non-enzymatic hydrogen peroxide sensor was fabricated by dropping MnO2/RGO/P25 nanocomposites on the surface of a glassy carbon electrode. Electrochemical measurements of the MnO2/RGO/P25 modified electrode were carried out on an electrochemical workstation. The as-prepared sensor exhibited high electrocatalytic activity, selectivity and stability towards the oxidation of H2O2. Under optimum conditions, the calibration curve for H2O2 determination was linear in the range from 1.0 × 10−6 to 4.0 × 10−3 M (R2 = 0.999) with a detection limit of 3 × 10−7 M (S/N = 3).

Graphical abstract: Photo-reduction assisted synthesis of MnO2/reduced graphene oxide/P25 for electrochemical detection of hydrogen peroxide

Article information

Article type
Paper
Submitted
07 Jul 2015
Accepted
17 Dec 2015
First published
22 Dec 2015

RSC Adv., 2016,6, 2632-2640

Author version available

Photo-reduction assisted synthesis of MnO2/reduced graphene oxide/P25 for electrochemical detection of hydrogen peroxide

S. Cui, Y. Li, D. Deng, L. Zeng, X. Yan, J. Qian and L. Luo, RSC Adv., 2016, 6, 2632 DOI: 10.1039/C5RA13275D

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