Oxygen Evolution Electrocatalysis of a Single MOF-derived Composite Nanoparticle on the tip of a Nanoelectrode

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dc.contributor.authorAiyappa, Harshitha Barike
dc.contributor.authorWilde, Patrick
dc.contributor.authorQuasT, Thomas
dc.contributor.authorMasa, Justus
dc.contributor.authorAndronescu, Corina
dc.contributor.authorSchuhmann, Wolfgang
dc.date.accessioned2022-11-16T09:31:51Z
dc.date.available2022-11-16T09:31:51Z
dc.date.issued2019
dc.description.abstractDetermination of the intrinsic electrocatalytic activity of nanomaterials by means of macroelectrode techniques is compromised by ensemble and film effects. Here, a unique “particle on a stick” approach is used to grow a single metal–organic framework (MOF; ZIF-67) nanoparticle on a nanoelectrode surface which is pyrolyzed to generate a cobalt/nitrogen-doped carbon (CoN/C) composite nanoparticle that exhibits very high catalytic activity towards the oxygen evolution reaction (OER) with a current density of up to 230 mA cm−2 at 1.77 V (vs. RHE), and a high turnover frequency (TOF) of 29.7 s−1 at 540 mV overpotential. Identical location transmission electron microscopy (IL-TEM) analysis substantiates the “self-sacrificial” template nature of the MOF, while post-electrocatalysis studies reveal agglomeration of Co centers within the CoN/C composite during the OER. “Single-entity” electrochemical analysis allows for deriving the intrinsic electrocatalytic activity and furnishes insight into the transient behavior of the electrocatalyst under reaction conditions.en_US
dc.identifier.citationAiyappa, H. B., Wilde, P., Quast, T., Masa, J., Andronescu, C., Chen, Y. T., ... & Schuhmann, W. (2019). Oxygen Evolution Electrocatalysis of a Single MOF‐Derived Composite Nanoparticle on the Tip of a Nanoelectrode. Angewandte Chemie International Edition, 58(26), 8927-8931.https://doi.org/10.1002/anie.201903283en_US
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/5268
dc.language.isoenen_US
dc.publisherAngewandte Chemie International Editionen_US
dc.titleOxygen Evolution Electrocatalysis of a Single MOF-derived Composite Nanoparticle on the tip of a Nanoelectrodeen_US
dc.typeArticleen_US
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