过氧化氢
纳米传感器
金属有机骨架
电化学
氧化还原
电解质
纳米结构
化学工程
电化学气体传感器
化学
无机化学
纳米技术
材料科学
电极
有机化学
物理化学
吸附
工程类
作者
Mahdi Hesari,Rui Jia,Michael V. Mirkin
标识
DOI:10.1002/celc.202200373
摘要
Abstract Electrochemical applications of metal organic frameworks (MOFs) are of considerable current interest. Due to the large surface area exposed to solution, MOFs are potentially useful electrode materials for sensing inner‐sphere analytes, such as reactive oxygen species. Herein, we electrodeposited copper benzene tricarboxylate MOF (HKUST‐1) into the cavity of an open carbon nanopipette (CNP) to produce a CNP‐MOF nanoelectrode. Unlike electronically conductive metal or carbon electrodes, the electrochemical response of CNP–MOFs relies on oxidation/reduction of Cu(I)/Cu(II) nodes in the porous nanostructure. Nevertheless, sigmoidal steady‐state voltammograms with a well‐defined plateau current have been recorded for simple redox mediators, for example, ferrocenemethanol. A linear calibration curve obtained for the hydrogen peroxide reduction suggests that CNP–MOFs can potentially be useful as nanosensors for peroxide.
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