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在Cu-foam@mesh催化剂上通过气演变促进酸盐到氨的电转换

Yuzhen Wang^1,2, Abhijit Dutta^1,3, Anna Iarchuk^1,3

¹Department of Chemistry, Biochemistry and Pharmaceutical Science, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland.

ACS catalysis

|June 21, 2023

概括

演化反应 (HER) 通过在多孔的铜泡催化剂中产生对流流来促进酸盐的减少. 这克服了大规模运输的限制,使得氨的生产率高.

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:

进化反应 (HER) 通常是电催化中的寄生虫副作用反应.
对于将酸盐减少为氨 (N2RR),需要高效的电催化剂.
大众运输的限制阻碍了多孔催化剂的高反应速率.

研究的目的:

开发一种有效的电化学酸盐转化为氨的催化剂.
研究HER在孔催化剂中减轻质量运输限制中的作用.
为了提高酸盐还原反应 (NO3-RR) 的性能.

主要方法:

使用动态气泡模板方法制造多孔Cu泡催化剂.
电化学表征包括潜在静电电解.
操作视频检查,观察反应条件下的催化剂行为.

主要成果:

多孔Cu泡作为电化学酸盐转化为氨的有效催化剂.
气体演变的HER产生了对流流,增强了酸盐质量转移到3D催化剂结构中的作用.
对于NO3-RR,实现的部分电流密度超过1A cm-2.

结论:

可以利用HER来改善多孔电催化剂中的质量传输.
由HER介导的运输效应显著提高了酸盐降解性能.
这一策略为从酸盐中高速电化学氨基合成提供了一条途径.

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相关概念视频

Catalysis

Catalysis

The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.