通过Fe-P原子对促进质子合电子转移,以提高电化学CO2减排2
Qiao Zhang1, Hsin Jung Tsai2, Fuhua Li3
1The Institute for Advanced Studies, Wuhan University, Wuhan, 430072, P. R. China.
Angewandte Chemie (International ed. in English)
|September 4, 2023
概括
一种新型的铁原子对催化剂 (Fe1/PNG) 显著提高了二氧化碳的减少到二氧化碳,实现了工业规模的性能. 这一突破解决了单原子催化剂的局限性,通过增强质子合电子转移动力学.
科学领域:
- 催化剂是一种催化剂.
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
背景情况:
- 单原子催化剂在减少二氧化碳方面表现有前途,但受到缓慢的质子合电子转移 (PCET) 动力学的限制.
- 二氧化碳转换的工业可扩展性需要克服这些动力瓶.
研究的目的:
- 开发一种催化剂,加速PCET步骤,以提高CO2转化为CO的转化率.
- 研究原子对催化剂在二氧化碳电还原中的协同效应.
主要方法:
- 制造一个Fe-P原子配对催化剂在配合的石墨层 (Fe1/PNG).
- 在膜电极组件中的电化学评估.
- 操作技术和密度函数理论 (DFT) 用于机械学研究.
主要成果:
- Fe1/PNG实现了工业CO电流密度为1A/cm2,在2.5V时具有超过90%的法拉代效率 (FECO).
- 在CO电流下,性能超过了单原子Fe1/NG催化剂的300%以上.
- DFT和操作研究揭示了P原子在促进水解离和CO2化中的作用.
结论:
- Fe-P原子对策略有效地加速PCET,克服了单原子催化剂的局限性.
- 这种方法为增强二氧化碳减排活动和选择性提供了一条途径.
- 原子对催化剂为调节催化性能提供了一种多功能策略.
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