Recent Advances of Electrochemical Sensors Based on Oxygen-Functionalized Graphene
Graphene,known for its excellent electrical conductivity and unique physical and chemical proper-ties,has found widespread application in the field of electrochemical sensors.Although the introduction of oxy-gen-containing functional groups in graphene oxide reduces its conductivity,an increasing number of studies have shown that these functional groups play a crucial role in improving electrocatalytic activity,enhancing anti-pollution capabilities,and promoting functionalization,all of which are vital for the performance of electro-chemical sensors.This article comprehensively reviews the progress in the application of single and multi-lay-ered graphene carbon structures with oxygen-containing functional groups(collectively referred to as oxygen-functionalized graphene,GO)in electrochemical sensing in recent years.The paper first introduces the basic properties of GO related to electrocatalysis,anti-fouling,and functionalization,including structure,types of sur-face functional groups,conductivity,hydrophilicity and hydrophobicity,interaction with biomolecules,and the electrochemical window.It then delves into how these properties collectively affect the performance and mecha-nisms of electrocatalytic activity,anti-pollution,and functionalization.Following this,the article discusses the classification of applications for electrochemical sensors based on GO.Finally,it looks forward to the future de-velopment of GO in the electrochemical sensing field.Electrochemical sensors based on GO are expected to show significant potential in the analysis of biological samples,in vivo testing,and wearable devices.
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