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Metal organic frameworks (MOFs) have found diverse applications in electrocatalysis and electrochemical sensing, owing to the presence of both metallic nodes and organic networks. Here, we electrosynthesized cobalt benzene tricarboxylate MOF inside an open carbon nanopipette (CNP) to produce a CNP-CoMOF nanoelectrode whose response is determined by Co(II)/Co(III)nodes attached to its porous nanostructure. Steady-state voltammograms of ferrocenemethanol at CNP-CoMOF nanoelectrodes exhibit a sigmoidal shape with a well-defined plateau current. A linear calibration curve obtained for the hydrogen peroxide oxidation suggests that CNP–CoMOF nanoelectrodes are potentially useful as nanosensors for peroxide free from interference of dissolved dioxygen.more » « less
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