Controlled Substrate Transport to Electrocatalyst Active Sites for Enhanced Selectivity in the Carbon Dioxide Reduction Reaction
Controlled Substrate Transport to Electrocatalyst Active Sites for Enhanced Selectivity in the Carbon Dioxide Reduction Reaction
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DOI：
10.1080/02603594.2019.1628025
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发表时间：
2019-06
影响因子：
5.4
通讯作者：
Ying-shu Liu;K. Leung;Samuel E. Michaud;Taylor L. Soucy;Charles C. L. McCrory
中科院分区：
文献类型：
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作者：
Ying-shu Liu;K. Leung;Samuel E. Michaud;Taylor L. Soucy;Charles C. L. McCrory
将CO2选择性电化学还原为增值产品是就地储存作为化学燃料的间歇性能源和将工业CO2废物再循环为工业原料的有用策略。本文综述了近年来在固体材料和离散分子体系中，通过调节底物输送和局部催化剂环境来提高CO2还原反应的反应和产物选择性方面的一些研究进展。我们讨论了最近的研究，主要集中在：(1)使用纳米结构和介孔固体电催化剂来调节活性位点附近的局部pH和CO2浓度；(2)在电催化剂表面涂上多孔涂层来直接控制底物到电催化剂表面的输送；(3)使用聚合物包封来修饰分子电催化剂周围的配位环境，以提高活性和减少CO2的选择性。我们认为，增加对控制底物输送的研究，以提高二氧化碳还原反应的反应和产物选择性，是设计新的电催化系统的一个很有前途的策略，可以选择性和有效地将二氧化碳转化为增值产品。图形抽象
The selective electrochemical reduction of CO2 to value-added products is a useful strategy for the local storage of intermittent energy sources as chemical fuels and the recycling of industrial CO2 waste into industrial feedstocks. This review highlights some of the recent research focused specifically on modulating substrate delivery and local catalyst environment to enhance reaction and product selectivity in the CO2 reduction reaction by both solid-state materials and discrete molecular systems. We discuss recent studies that focus on (1) using nanostructured and mesoporous solid-state electrocatalysts to modulate local pH and CO2 concentrations near active sites, (2) coating electrocatalysts with porous overlayers to directly control substrate delivery to the electrocatalyst surface, and (3) using polymer encapsulation to modify the coordination environment surrounding molecular electrocatalysts to enhance activity and selectivity for CO2 reduction. We believe that increased research in controlling substrate delivery to enhance reaction and product selectivity for the CO2 reduction reaction is a promising strategy for designing new electrocatalytic systems for the selective and efficient conversion of CO2 to value-added products. Graphical abstract