MOF derived Co3O4/N-doped carbon nanotubes hybrids as efficient catalysts for sensitive detection of H2O2 and glucose  

作　　者：Yingnan Qin Yingjun Sun Yingjie Li Chunji Li Lei Wang Shaojun Guo 

机构地区：[1]College of Chemistry and Molecular Engineering,Qingdao University of Science and Technology,Qingdao 266042,China [2]Department of Materials Science and Engineering,Department of Biomedical Engineering,College of Engineering,Peking University,Beijing 100871,China

出　　处：《Chinese Chemical Letters》2020年第3期774-778,共5页中国化学快报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(NSFC)(Nos.51671003,21802003,21571112);Natural Science Foundation of Shandong Province(ZR2018BB031);the Shandong Taishan Scholar Program(H.W.);the China Postdoctoral Science Foundation(No.2017M610022);the start-up supports from Peking University;Young Thousand Talented Program。

摘　　要：Developing enzyme-free sensors with high sensitivity and selectivity for H2O2 and glucose is highly desirable for biological science.Especially,it is attractive to exploit noble-metal-free nanomaterials with large surface area and good conductivity as highly active and selective catalysts for molecular detection in enzyme-free sensors.Herein,we successfully fabricate hollow frameworks of Co3O4/N-doped carbon nanotubes(Co3O4/NCNTs)hybrids by the pyrolysis of metal-organic frameworks followed by calcination in the air.The as-prepared novel hollow Co3O4/NCNTs hybrids exhibit excellent electrochemical performance for H2O2 reduction in neutral solutions and glucose oxidation in alkaline solutions.As sensor electrode,the Co3O4/NCNTs show excellent non-enzymatic sensing ability towards H2O2 response with a sensitivity of 87.40μA(mmol/L)^-1 cm^-2,a linear range of 5.00μmol/L-11.00 mmol/L,and a detection limitation of 1μmol/L in H2O2 detection,and a good glucose detection performance with 5μmol/L.These excellent electrochemical performances endow the hollow Co3O4/NCNTs as promising alternative to enzymes in the biological applications.

关 键 词：ZIF-67 Co3O4/NCNTs HYBRIDS Enzyme-free sensor H2O2 GLUCOSE 

分 类 号：TB383.1[一般工业技术—材料科学与工程] O657.1[理学—分析化学]