清华大学罗三中团队报道了重氮磷烯的有机催化析氢反应。相关研究成果于2024年9月11日发表在国际顶尖学术期刊《美国化学会杂志》。

电化学析氢反应（HER）目前被认为是获得清洁能源的一种有前景的方法。目前使用的电催化剂主要基于过渡金属。

该文中，研究人员展示了一种二氮磷烯（N-杂环膦（NHP））型小分子有机催化剂，可以以130 mA·cm^-2的最大电流密度、354 mV的过电位和90%的法拉第效率催化HER。

机理研究证实了NHP的Heyrovsky型工艺过程，而其氢化性和芳香性有利于氢气释放和催化剂再生。

附：英文原文

Title: Organocatalytic Hydrogen Evolution Reaction by Diazaphospholenes

Author: Kaini Xu, Yu-Shan Zhang, Bing Zhong, Long Zhang, Jin-Dong Yang, Sanzhong Luo

Issue&Volume: September 11, 2024

Abstract: The electrochemical hydrogen evolution reaction (HER) is currently recognized as a prospective way to obtain clean energy. The electrocatalysts used currently are dominantly based on transition metals. In this work, we have demonstrated a diazaphospholene (N-heterocyclic phosphine (NHP))-type small molecular organocatalyst that can catalyze the HER with a maximum current density of 130 mA·cm–2, an overpotential of 354 mV, and a faradaic efficiency of 90%. Mechanistic studies verify a Heyrovsky-type process with NHP, whereas its hydricity and aromaticity favor hydrogen release and catalyst regeneration.

DOI: 10.1021/jacs.4c10302

Source: https://pubs.acs.org/doi/abs/10.1021/jacs.4c10302