通过将Cu NP纳入胺酸框架,通过协同电催化增强将CO2电还原改为碳化合物
Ping Shao1,2, Yu-Mei Wan2, Luocai Yi2
1College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350108, P. R. China.
Small (Weinheim an der Bergstrasse, Germany)
|September 30, 2023
概括
这项研究引入了一种新的Cu@BIF-144(Zn) 协同催化剂,用于高效的电催化二氧化碳减排. 这种催化剂增强了生产有价值的多电子转移产品 (如甲和乙烯) 的选择性和活性.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 催化剂是一种催化剂.
背景情况:
- 由于产品的高价值,电催化二氧化碳减少到多电子转移产品正受到越来越多的关注.
- 双重催化剂提供了一种分离反应步骤以提高效率的策略.
研究的目的:
- 合成和描述一种新的Cu@BIF-144(Zn) 协同催化剂,用于减少二氧化碳.
- 为了研究BIF-144 (((Zn) 主体和Cu纳米粒子之间的协同作用.
- 提高多电子转移产品的选择性和活性.
主要方法:
- 使用BIF-144 (Zn) 作为Cu2+离子的主体合成Cu@BIF-144 (Zn) 复合物.
- 在现场电化学还原Cu2+到Cu纳米粒子 (NP).
- 电化学评估二氧化碳还原反应 (CO2 RR) 的性能.
主要成果:
- Cu@BIF-144(Zn) 催化剂对减少多电子转移产品的二氧化碳具有增强的选择性和活性.
- 甲 (CH4) 的最大法拉戴克效率 (FE) 在-1.6V与RHE相比达到41.8%.
- 乙烯 (C2H4) 的最大FE在-1.5V与RHE相比达到12.9%.
结论:
- 双重催化剂Cu@BIF-144(Zn) 在主机和客机组件之间表现出协同效应.
- 催化剂的微环境,由 Zn 催化中心调节,促进了 CO2 的深度减排.
- 这种催化剂设计有效地提高了电催化二氧化碳的减少到有价值的多电子转移产品.
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