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高稳定的半导体多孔协调聚合物的模块化设计,用于氨的高效电合成

Ziqian Xue^1,2, Ming-Shui Yao³, Ken-Ichi Otake¹

¹Institute for Integrated Cell-Material Sciences, Kyoto University, Institute for Advanced Study, Kyoto University Yoshida, Ushinomiya-cho, Sakyo-ku, Kyoto, 606-8501, Japan.

Angewandte Chemie (International ed. in English)

|April 7, 2024

概括

研究人员开发了一种稳定,导电的多孔协调聚合物 (PCP) 用于电催化. 这种材料有效地将酸盐转化为氨,为电催化剂机制和结构-活性关系提供了洞察力.

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:

开发稳定,导电性多孔协调聚合物 (PCP) 对于理解电催化是必不可少的.
电化学不稳定性限制了大多数PCP作为电催化剂的使用.

研究的目的:

设计和合成一个电化学稳定,半导体PCP与集成电导率.
研究其作为酸盐还原反应 (NO3RR) 的模型电催化剂的性能.

主要方法:

模块化设计策略用于构建Fe-pyNDI.
三维电子衍射 (3D ED) 用于结构的确定.
理论和实验研究. 理论和实验研究.
在现场的X射线吸收光谱 (XAS).

主要成果:

Fe-pyNDI通过π堆叠柱表现出增强的结构稳定性和高效的电子传输.
在中性电解质中实现了NO3RR的高氨产量 (339.2 μmol h-1 cm-2) 和法拉第效率 (87%).
在与现场Fe3+减少到Fe2+的反应中证明了结构完整性.

结论:

开发的Fe-pyNDI作为NO3RR的高度稳定和高效的电催化剂.
模块化设计策略为创建先进的电催化材料提供了一条途径.
现场结构变化和活性物种识别为反应机制提供了洞察力.

关键词:

电导率电导率电导率电导率电合成氨氨的电解.在现场XAFSXAFS 模型电催化剂模型多孔协调聚合物/金属有机框架

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