Restructuring of Cu2O to Cu2O@Cu-Metal–Organic Frameworks for Selective Electrochemical Reduction of CO2 | doi.page

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Restructuring of Cu₂O to Cu₂O@Cu-Metal–Organic Frameworks for Selective Electrochemical Reduction of CO₂

ACS Applied Materials & Interfaces2019Vol. 11(10), pp. 9904–9910

Citations Over TimeTop 10% of 2019 papers

Xinyi Tan, Chang Yu, Changtai Zhao, Huawei Huang, Xiuchao Yao, Xiaotong Han, Wei Guo, Song Cui, Hongling Huang, Jieshan Qiu

Abstract

Electrochemical reduction of carbon dioxide to hydrocarbons, driven by renewable power sources, is a fascinating and clean way to remedy greenhouse gas emission as a result of overdependence on fossil fuels and produce value-added fine chemicals. The Cu-based catalysts feature unique superiorities; nevertheless, achieving high hydrocarbon selectivity is still inhibited and remains a great challenge. In this study, we report on a tailor-made multifunction-coupled Cu-metal-organic framework (Cu-MOF) electrocatalyst by time-resolved controllable restructuration from Cu₂O to Cu₂O@Cu-MOF. The restructured electrocatalyst features a time-responsive behavior and is equipped with high specific surface area for strong adsorption capacity of CO₂ and abundant active sites for high electrocatalysis activity based on the as-produced MOF on the surface of Cu₂O, as well as the accelerated charge transfer derived from the Cu₂O core in comparison with the Cu-MOF. These intriguing characteristics finally lead to a prominent performance towards hydrocarbons, with a high hydrocarbon Faradaic efficiency (FE) of 79.4%, particularly, the CH₄ FE as high as 63.2% (at -1.71 V). This work presents a novel and efficient strategy to configure MOF-based materials in energy and catalysis fields, with a focus on big surface area, high adsorption ability, and much more exposed active sites.

Citations Over TimeTop 10% of 2019 papers

Abstract

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