在完全结合的共价有机框架上具有不对称的协调环境的单原子,用于高效的电催化
Ziqi Zhang1, Zhe Zhang1, Cailing Chen2
1State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, 130012, P. R. China.
Nature communications
|March 23, 2024
概括
本研究引入了一个新的--2 (Pt-N2) 协调部位在2D共价有机框架 (COF) 中,用于高效的演化反应 (HER) 电催化,提供增强的导电性和稳定性.
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:
- 两维 (2D) 共价有机框架 (COF) 是有前途的电催化剂,因为它们的独特结构和高表面积.
- 开发高效和稳定的电催化剂用于演化反应 (HER) 对于清洁能源技术至关重要.
研究的目的:
- 在二维COF中构建一个新的,非热力学稳定的Pt-N2协调活性位点.
- 用单原子 (Pt) 为 HER 开发一种导电,无热解的电催化剂.
- 研究设计的单原子催化剂的催化机制和结构-活性关系.
主要方法:
- 将 (Pt) 单个原子电化学修改为2D COF.
- 在现场表征.
- 理论上的计算. 理论上的计算.
主要成果:
- 成功合成了一种富含的石墨烯模拟COF,它具有独特的Pt-N2协调环境,而不是典型的Pt-N4.
- Pt-N2协调优化了Pt位点与H*中间体的结合能量,增强了HER活性.
- 支持COF在酸性介质中改善了电子传输和结构稳定性,证明了导电性和耐用性.
结论:
- 开发的具有Pt单个原子和Pt-N2协调的2D COF是HER的有效,导电性和稳定的电催化剂.
- 该研究提供了关于单原子催化剂用于电催化物的结构-活性关系的见解.
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