Molybdenum–Bismuth Bimetallic Chalcogenide Nanosheets for Highly Efficient Electrocatalytic Reduction of Carbon Dioxide to Methanol |
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Authors: | Xiaofu Sun Dr. Qinggong Zhu Xinchen Kang Prof. Dr. Huizhen Liu Dr. Qingli Qian Dr. Zhaofu Zhang Prof. Dr. Buxing Han |
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Affiliation: | Beijing National Laboratory for Molecular Sciences, Key Laboratory of Colloid and Interface and Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Beijing, China |
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Abstract: | Methanol is a very useful platform molecule and liquid fuel. Electrocatalytic reduction of CO2 to methanol is a promising route, which currently suffers from low efficiency and poor selectivity. Herein we report the first work to use a Mo‐Bi bimetallic chalcogenide (BMC) as an electrocatalyst for CO2 reduction. By using the Mo‐Bi BMC on carbon paper as the electrode and 1‐butyl‐3‐methylimidazolium tetrafluoroborate in MeCN as the electrolyte, the Faradaic efficiency of methanol could reach 71.2 % with a current density of 12.1 mA cm?2, which is much higher than the best result reported to date. The superior performance of the electrode resulted from the excellent synergistic effect of Mo and Bi for producing methanol. The reaction mechanism was proposed and the reason for the synergistic effect of Mo and Bi was discussed on the basis of some control experiments. This work opens a way to produce methanol efficiently by electrochemical reduction of CO2. |
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Keywords: | bimetallic chalcogenides carbon dioxide electrocatalysis nanosheets ionic liquids |
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