Open AccessReview—Non-Enzymatic Hydrogen Peroxide Electrochemical Sensors Based on Reduced Graphene Oxide
Author(s) -
Hamed Shamkhalichenar,
JinWoo Choi
Publication year - 2020
Publication title -
journal of the electrochemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.258
H-Index - 271
eISSN - 1945-7111
pISSN - 0013-4651
DOI - 10.1149/1945-7111/ab644a
Subject(s) - graphene , amperometry , hydrogen peroxide , materials science , electrochemistry , oxide , nanotechnology , electrocatalyst , electrochemical gas sensor , electrode , computer science , chemistry , organic chemistry , metallurgy
The determination of hydrogen peroxide (H 2 O 2 ) plays a crucial role in many industrial applications as well as clinical diagnoses. Electrochemical sensing techniques can provide a rapid, accurate, and simple approach to determine the level of hydrogen peroxide accurately. Recently, reduced graphene oxide (rGO) has been employed extensively to develop amperometric sensors for sensitive and selective detection of H 2 O 2 because of its good catalytic activity, mass scalability, and cost-effectiveness. During the past decade, various reduction methods have been used to produce rGO for electrochemical sensing applications. Besides, these electrodes have been modified with functional materials to improve the response of the sensors. Depending on the used materials, characteristics and sensitivity of the sensors varied a lot. Also, the production method of rGO affects the performance of the electrochemical sensor and needs to be taken into account to correlate the results from the sensor with the physical and chemical properties of the sensing material. This article provides an insightful overview of the utilization of rGO in the developments of enzyme-free H 2 O 2 electrochemical sensors. This review includes the recent advances in the area from both rGO production method and electrocatalyst performance. Also, the challenges and prospects were discussed in this review.