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Appl. Sci. 2018, 8(6), 848; https://doi.org/10.3390/app8060848

Flexible Hydrogen Peroxide Sensors Based on Platinum Modified Free-Standing Reduced Graphene Oxide Paper

1
School of Environmental and Materials Engineering, College of Engineering, Shanghai Polytechnic University, 2360 Jinhai Road, Shanghai 201209, China
2
Shanghai Innovation Institute for Materials, Shanghai 200444, China
*
Author to whom correspondence should be addressed.
Received: 9 April 2018 / Revised: 12 May 2018 / Accepted: 14 May 2018 / Published: 23 May 2018
(This article belongs to the Section Nanotechnology and Applied Nanosciences)
Full-Text   |   PDF [2333 KB, uploaded 23 May 2018]   |  

Abstract

In this article, we report a facile method to fabricate free-standing reduced graphene oxide paper (rGOP) by vacuum filtration. Pt nanoparticles were electrodeposited on reduced graphene oxide paper to construct a sensitive and flexible hydrogen peroxide (H2O2) sensor. The properties of Pt/rGOP were characterized by scanning electron microscopy, energy dispersive X-ray, X-ray photoelectron spectroscopy and Raman spectroscopy. The electrochemical characterizations of the resulting sensor were carried out by cyclic voltammetry, chronoamperometry and electrochemical impedance spectroscopy. The Pt/rGOP hybrid electrode had an excellent electrochemical property, with superb electrocatalytic activity, a large electrochemical active surface area, flexibility and high stability. The linear ranges of the as-prepared sensor for H2O2 detection were divided into two linear sections: 0.2 μmol/L to 2.0 mmol/L and 2.0 to 8.5 mmol/L, with a detection limit of 100 nmol/L (S/N = 3) and a response time of less than 5 s. The proposed sensor has great potential to become a reliable and flexible tool in biosensor and point-of-care medical devices. View Full-Text
Keywords: reduced graphene oxide paper; hydrogen peroxide; electrodeposition; Pt nanoparticles; biosensor reduced graphene oxide paper; hydrogen peroxide; electrodeposition; Pt nanoparticles; biosensor
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Song, R.-M.; Li, Z.-H.; Wei, P.-J.; Zhao, X.-L.; Chen, C.; Zhu, Z.-G. Flexible Hydrogen Peroxide Sensors Based on Platinum Modified Free-Standing Reduced Graphene Oxide Paper. Appl. Sci. 2018, 8, 848.

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