Restructuring of Cu 2 O to Cu 2 O@Cu-Metal-Organic Frameworks for Selective Electrochemical Reduction of CO 2

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

Research output: Contribution to journalArticlepeer-review

180 Scopus citations

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 Cu 2 O to Cu 2 O@Cu-MOF. The restructured electrocatalyst features a time-responsive behavior and is equipped with high specific surface area for strong adsorption capacity of CO 2 and abundant active sites for high electrocatalysis activity based on the as-produced MOF on the surface of Cu 2 O, as well as the accelerated charge transfer derived from the Cu 2 O 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 CH 4 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.
Original languageEnglish (US)
Pages (from-to)9904-9910
Number of pages7
JournalACS Applied Materials and Interfaces
Volume11
Issue number10
DOIs
StatePublished - Mar 13 2019
Externally publishedYes

ASJC Scopus subject areas

  • General Materials Science

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