高选择性CO2电降解到C2H4使用双站式Cu (II) 氨酸框架与Cu2O纳米颗粒通过协同-协奏策略相结合
Qizhe He1, Hongwei Li1, Zhuofeng Hu2
1School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang, 315211, China.
Angewandte Chemie (International ed. in English)
|June 5, 2024
概括
一种基于铜的新型催化剂增强了二氧化碳的电还原到乙烯. 这种协同协同的战略提高了CO的可用性,实现了可持续化学合成的高生产效率.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
背景情况:
- 低一氧化碳 (CO) 覆盖范围限制C2H4生产的并联电催化.
- 开发高效的二氧化碳电还原催化剂仍然是一个重大挑战.
研究的目的:
- 设计一个以铜为基础的复合催化剂,以有效地将二氧化碳电还原为C2H4.4.
- 为了研究双重活性站点的协同效应,以增强C-C合.
主要方法:
- 在碳纳米管 (CNT) 支架上使用Cu(II) 氨酸有机框架的模板定向聚合剂制造催化剂.
- 在分散的Cu2O纳米颗粒旁边,将原子分离的Cu(II) 和Cu(II) 双位结合起来.
- 使用操作式红外光谱和理论计算来验证性能.
主要成果:
- 复合催化剂表现出高法拉代效率 (FE_C2H4) 71.0%的二氧化碳转化为C2H4在-1.1V与RHE.
- 双重活性位点之间的协同效应增加了当地的CO可用性,增强了相邻的Cu2O纳米颗粒上的C-C合.
- 催化剂在报告的基于铜的双重催化剂中表现出最高的效率之一.
结论:
- 开发的协同协同策略有效地克服了CO2电子减排中的CO2覆盖范围限制.
- 基于铜的复合催化剂在生产C2H4方面表现出了卓越的性能.
- 这项工作为高效的电化学二氧化碳转化提供了一个有希望的途径.
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