缺陷铜铋复合氧化物高效电催化二氧化碳还原制备甲酸

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中图分类号：0643.3 文献标志码：A DOI：10.3969/j.issn.1003-9015.2025.02.017

Abstract：Inorder toimprove electrocatalyticreductioneficiencyofcarbondioxideto formicacidand mitigateatmosphericcarbon dioxide concentration，a series of composites containing diffrent ratios of copper-bismuth were prepared using the salt template method.The introduction of sodium chloride facilitated the formation of oxygen defects and enhanced the electrochemical performance of the catalysts. The Cu1Bi18.2Ox catalyst shows a formic acid Faradaic efficiency of 99.4%at -1.O V vs. RHE. Additionally， Cu1Bi18.2Ox exhibits the largest electrochemical active surface area and reduced charge transfer resistance，and maintains a formic acid Faradaic efciency above 95% （204号 after 34 hours ofoperation.This research provides new insights into theapplication of the salt-templatemethod for catalyst preparation and offrs an effective catalyst for the electrocatalytic reduction of carbon dioxide.

Key words：electrocatalytic reduction of carbon dioxide；formic acid；salt template method；copper oxide; bismuth oxide

1前言

由于化石燃料的大规模燃烧和人类活动造成的森林砍伐，大气中的二氧化碳（ CO2 ）浓度急剧上升，对生态环境构成了严重威胁。（剩余18110字）