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Membrane-Modified Metal Triazole Complexes for the Electrocatalytic Reduction of Oxygen and Carbon Dioxide

机译:膜修饰的金属三唑配合物用于电催化还原氧气和二氧化碳

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摘要

In this manuscript, an electrochemical architecture is designed that controls the kinetics of proton transfer to metal triazole complexes for electrocatalytic O2 and CO2 reduction. Self-assembled monolayers of these catalysts are attached to a glassy carbon electrode and covered with a lipid monolayer containing proton carriers, which acts as a proton-permeable membrane. The O2 reduction voltammograms on carbon are similar to those obtained on membrane-modified Au electrodes, which through the control of proton transfer rates, can be used to improve the selectivity of O2 reduction. The improved voltage stability of the carbon platforms allows for the investigation of a CO2 reduction catalyst inside a membrane. By controlling proton transfer kinetics across the lipid membrane, it is found that the relative rates of H2, CO, and HCOOH production can be modulated. It is envisioned that the use of these membrane-modified carbon electrodes will aid in understanding catalytic reactions involving the transfer of multiple protons and electrons.
机译:在此手稿中,设计了一种电化学体系结构,该体系结构控制质子转移到金属三唑配合物中的动力学,以进行电催化O2和CO2还原。这些催化剂的自组装单层附着在玻璃碳电极上,并被含有质子载体的脂质单层覆盖,该质子载体充当质子可渗透膜。碳上的O2还原伏安图类似于在膜修饰的Au电极上获得的氧伏安图,通过控制质子转移速率,可用于提高O2还原的选择性。碳平台的改进的电压稳定性允许研究膜内部的CO 2还原催化剂。通过控制跨脂质膜的质子转移动力学,发现可以调节H2,CO和HCOOH产生的相对速率。可以预见,使用这些膜修饰的碳电极将有助于理解涉及多个质子和电子转移的催化反应。

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