Metal‐Organic‐Framework‐Based Electrochemical Nanosensor for Hydrogen Peroxide
Metal‐Organic‐Framework‐Based Electrochemical Nanosensor for Hydrogen Peroxide
复制标题
基于金属有机框架的过氧化氢电化学纳米传感器
DOI：
10.1002/celc.202200373
复制
发表时间：
2022
期刊：
影响因子：
4
通讯作者：
Mirkin, Michael V.
中科院分区：
文献类型：
--
作者：
Hesari, Mahdi;Jia, Rui;Mirkin, Michael V.
金属有机骨架（MOFs）的电化学应用是目前人们非常关注的问题。由于暴露在溶液中的表面积很大，mof是潜在的有用的电极材料，用于检测球内分析物，如活性氧。在此，我们将三羧酸铜苯MOF （HKUST‐1）电沉积到开放式碳纳米管（CNP）的腔中，以制备CNP‐MOF纳米电极。与导电金属或碳电极不同，cnp - mof的电化学响应依赖于多孔纳米结构中Cu(I)/Cu（II）节点的氧化/还原。然而，对于简单的氧化还原介质，如二茂铁乙醇，已经记录了具有明确平台电流的s型稳态伏安图。过氧化氢还原的线性校准曲线表明cnp - mof可以作为过氧化氢的纳米传感器。
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.