调整二氧化碳减排反应选择性 双单原子电催化剂与受控协调环境的选择性
Saswati Santra1,2, Verena Streibel1,2, Laura I Wagner1,2
1Walter Schottky Institute, Technical University of Munich, 85748, Garching, Germany.
ChemSusChem
|January 15, 2024
概括
调节双单原子催化剂 (SAC) 的协调环境,精确控制电催化二氧化碳还原反应 (CO2RR) 的产物. 氧气协调的Bi SACs产生酸,而协调的Bi SACs产生一氧化碳.
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:
- 控制电催化二氧化碳减排反应 (CO2RR) 中的产品选择性对于可持续的化学生产至关重要.
- 单原子催化剂 (SAC) 为定制的催化活性和选择性提供可调节的协调环境.
- 连接SAC协调环境与CO2RR的选择性控制的系统证据仍然有限.
研究的目的:
- 调查 (Bi) SAC协调环境对CO2RR产品选择性的影响.
- 为了证明双 SAC 中的结构-活动关系,以控制 CO2RR 途径.
主要方法:
- 在碳黑上支持的两种不同的 (Bi) 单原子催化剂 (SAC) 的合成.
- 合成的Bi SACs的协调环境的表征.
- 对每个Bi SAC的CO2RR活性和产品选择性的电催化评估.
主要成果:
- 氧气协调的Bi SAC选择性地产生酸 (HCOOH).
- 用协调的Bi SAC选择性地产生一氧化碳 (CO).
- 一致的支持材料证实了协调环境是选择性控制的主要因素.
结论:
- 在CO2RR.中证明了Bi SACs在CO2RR.中具有明确的结构-活动关系.
- 展示了通过工程SAC原子协调来控制CO2RR产品分布的能力.
- 通过反应路径调整,突出了SACs在目标化工原料生产中的潜力.
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