Mo-Bi双金属硫化物纳米层片用于高效电化学催化CO_2制备甲醇的研究
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- 英文论文题名：Mo-Bi bimetallic chalcogenide nanosheets for highly efficient electrocatalytic reduction of carbon dioxide to methanol
- 论文作者：孙晓甫 ; 朱庆宫 ; 康欣晨 ; 刘会贞 ; 钱庆利 ; 张兆富 ; 韩布兴
- 英文论文作者：Xiaofu Sun ; Qinggong Zhu ; Xinchen Kang ; Huizhen Liu ; Qingli Qian ; Zhaofu Zhang ; Buxing Han ; Beijing National Laboratory for Molecular Sciences ; Institute of Chemistry ; Chinese Academy of Sciences
- 年：2016
- 作者机构：北京分子科学国家实验室中国科学院化学研究所分子科学中心;
- 论文关键词：二氧化碳 ; 离子液体 ; 电化学催化 ; 绿色化学 ; 甲醇
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十三分会：绿色化学
- 语种：中文
- 分类号：TQ223.121
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十三分会 ; 绿色化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：257k
- 原文格式：D
- 会议级别：全国
摘要
CO_2回收及利用具有能源、环境、经济多重意义,同时也是控制全球气候变暖的一项紧迫任务。电化学催化还原的方法可以在温和条件下使CO_2还原为一氧化碳、烃类、酸类、醇类等高附加值的精细化工产品。而电极材料是决定还原产物和效率的重要因素。本工作通过溶剂热的方法制备了Mo-Bi双金属硫化物纳米层片,采用SEM、TEM、XPS和DLS等手段对其结构性能进行了系统的研究。以碳纸为基底、Mo-Bi双金属硫化物纳米层片作为阴极电催化材料、1-丁基-3-甲基咪唑四氟硼酸盐的乙腈溶液作为电解质,可以高效催化转化CO_2为甲醇。结果表明,这一体系中甲醇的法拉第效率最高可以达到71.2%,同时甲醇的还原电流密度可达到12.1 mA cm~(-2)。其可能的反应路径为CO_2→CO_2~-→CO_(ad)→CHO_(ads)→CH_3O_(ads)→甲醇。
CO_2 is cheap,abundant and safe carbon resource,and its transformation into valuable chemicals and fuel has received much attention.Methanol is a very useful chemical.We carried out the first work to use Mo-Bi bimetallic chalcogenide as electrocatalyst for CO_2 reduction.By using the Mo-Bi BMC on carbon paper as electrode and l-butyl-3-methylimidazolium tetrafluoroborate in acetonitrile as 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.Detailed study indicates that the outstanding performance of the electrode resulted from the excellent synergistic effect of Mo and Bi for producing methanol.
CO_2 is cheap,abundant and safe carbon resource,and its transformation into valuable chemicals and fuel has received much attention.Methanol is a very useful chemical.We carried out the first work to use Mo-Bi bimetallic chalcogenide as electrocatalyst for CO_2 reduction.By using the Mo-Bi BMC on carbon paper as electrode and l-butyl-3-methylimidazolium tetrafluoroborate in acetonitrile as 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.Detailed study indicates that the outstanding performance of the electrode resulted from the excellent synergistic effect of Mo and Bi for producing methanol.
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