Novel determination of hydrogen peroxide by electrochemically reduced graphene oxide grafted with aminothiophenol-Pd nanoparticles

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• 作者：Jung-Min YouAuthor Vitae ; Daekun KimAuthor Vitae ; Seul Ki KimAuthor Vitae ; Min-Su KimAuthor Vitae ; Hyoung Soon HanAuthor Vitae ; Seungwon Jeon ; ^{swjeon3380@naver.com}Author Vitae
• 关键词：Electrochemical biosensors ; Electrochemically reduced graphene oxide ; Aminothiophenol ; Palladium nanoparticles ; Hydrogen peroxide
• 刊名：Sensors and Actuators B: Chemical
• 出版年：2013
• 出版时间：1 March, 2013
• 年：2013
• 卷：178
• 期：Complete
• 页码：450-457
• 全文大小：1589 K

文摘

Graphene oxide (GO) has functionalized with aminothiophenol (ATP) and covalently bonded to the palladium (Pd) nanoparticles (NPs) via sulfur atom. The GO-ATP-Pd was electrochemically reduced to graphene oxide (ERGO) at a potential range of 0 to ?1.5 V, and was used in electrochemical biosensing for hydrogen peroxide (H₂O₂). The ERGO-ATP-Pd-modified electrode showed the advantages of excellent electrocatalytic activity toward H₂O₂ in PBS solution. The ERGO-ATP-Pd was characterized by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), energy dispersive X-ray spectroscopy (EDS) and electrochemical impedance spectroscopy (EIS). Cyclic voltammetry (CV) and chronoamperometry (CA) were used to characterize the performance of the biosensor. The proposed H₂O₂ biosensor exhibited a wide linear range from 0.1 ¦ÌM to 10 mM, and a low detection limit of 0.016 ¦ÌM (S/N = 3), with a fast response time of less than 10 s. The biosensor, therefore, demonstrated excellent capability for the analysis of H₂O₂.