High-performance non-enzymatic glucose sensor based on Co_(3)O_(4)/rGO nanohybrid  

作　　者：Ling-Yun Xiong You-Joong Kim Won-Cheol Seo Han-Kyu Lee Woo-Chul Yang Wan-Feng Xie 

机构地区：[1]Department of Physics,Dongguk University,Seoul,04620,South Korea [2]School of Electronics and Information,Industry Joint Center for Ocean Observation and Broadband Communication,Qingdao University,Qingdao,266071,China

出　　处：《Rare Metals》2023年第9期3046-3053,共8页稀有金属（英文版）

基　　金：financially supported by the National Research Foundation of Korea(NRF)grant funded by the Korean government(MSIT)(Nos.2021H1D3A2A01100019 and 2022R1F1074441);supported by the Brain Pool Program funded by the Ministry of Science and ICT through the National Research Foundation of Korea(No.2021H1D3A2A01100019)。

摘　　要：There has been substantial interest in designing and fabricating electrochemical non-enzyme sensors for glucose detection with a focus on the nanocomposites used between metal oxide and the two-dimensional material.In this work,Co_(3)O_(4)/reduced graphene oxide(rGO)nanocomposite was obtained and used as a modified electrochemical electrode for the detection of trace glucose.According to the results,the electrocatalytic performances of Co_(3)O_(4)nanoparticles for the oxidation of glucose were substantially enhanced with the addition of a small amount of r GO.Specifically,the Co_(3)O_(4)/r GO modified electrode exhibited a sensitivity of 82μA·mmol^(-1)·cm^(-2),a detection limit of 50μmol·L^(-1)(signal noise ratio(S/N)=3),and a fast response time of about 1 s under optimal conditions.The enhanced performances of the Co_(3)O_(4)/r GO modified electrode are attributable to the high absorption oxygen(O_(Ads))and synergistic effect between Co_(3)O_(4)and r GO.The results indicate that Co_(3)O_(4)/r GO nanocomposite is a promising candidate for being used as the active material in real-world electrochemical biosensors.

关 键 词：Co_(3)O_(4) Reduced graphene oxide(rGO) GLUCOSE ELECTROCATALYTIC 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TP212[自动化与计算机技术—检测技术与自动化装置]