biostudies-literature00460Kang XChinese Academy of SciencesNational Natural Science Foundation of China266-273https://www.ebi.ac.uk/biostudies/studies/S-EPMC5952524biostudies-literatureUnknown7(1)Highly efficient electrochemical reduction of CO₂ to CH₄ is of great importance, but is challenging. Herein, Zn-1,3,5-benzenetricarboxylic acid metal-organic frameworks (Zn-BTC MOFs) deposited on carbon paper (CP) were used as cathodes in electrochemical reduction of CO₂ using ionic liquids (ILs) as the electrolytes, which was the first work on combination of a MOF electrode and an pure IL electrolyte in the electrochemical reduction of CO₂. It was found that the efficiency of the reaction depended strongly on the morphology of the Zn-MOFs. Compared with the commonly used metal electrodes, the electrochemical reaction showed much higher selectivity to CH₄ and current density, and the overpotentials for CH₄ is much lower. The excellent combination of the MOF cathodes and ILs opens a way for reduction of CO₂ to CH₄ effectively.Chemical scienceHighly efficient electrochemical reduction of CO₂ to CH₄ in an ionic liquid using a metal-organic framework cathode.PMC59525242132106321133009KJCX2.YW.H3021403253U1232203Kang XLiu ZHan BHu JZhang JSun XZhu Q46falseHighly efficient electrochemical reduction of CO₂ to CH₄ in an ionic liquid using a metal-organic framework cathode.Highly efficient electrochemical reduction of CO₂ to CH₄ is of great importance, but is challenging. Herein, Zn-1,3,5-benzenetricarboxylic acid metal-organic frameworks (Zn-BTC MOFs) deposited on carbon paper (CP) were used as cathodes in electrochemical reduction of CO₂ using ionic liquids (ILs) as the electrolytes, which was the first work on combination of a MOF electrode and an pure IL electrolyte in the electrochemical reduction of CO₂. It was found that the efficiency of the reaction depended strongly on the morphology of the Zn-MOFs. Compared with the commonly used metal electrodes, the electrochemical reaction showed much higher selectivity to CH₄ and current density, and the overpotentials for CH₄ is much lower. The excellent combination of the MOF cathodes and ILs opens a way for reduction of CO₂ to CH₄ effectively.2016-01-01T00:00:00Z2016 Jan2024-11-20T08:48:30.062Z2019-03-26T23:40:30ZS-EPMC59525242986198110.1039/c5sc03291a