金属卟啉咔咯分子结构对氧气还原反应机理的影响  

Structural effects of metal porphyrins and metal corroles on the mechanisms of the oxygen reduction reaction

作　　者：王致萌 李夏亮 曹睿 Zhimeng Wang;Xialiang Li;Rui Cao(Key Laboratory of Applied Surface and Colloid Chemistry,Ministry of Education,School of Chemistry and Chemical Engineering,Shaanxi Normal University,Xi’an 710119,China)

机构地区：[1]陕西师范大学化学化工学院,应用表面与胶体化学教育部重点实验室,西安710119

出　　处：《中国科学：化学》2024年第10期1689-1699,共11页SCIENTIA SINICA Chimica

基　　金：国家自然科学基金(22325202,22171176和22102092);中央高校基本科研业务费;陕西师范大学科研经费资助。

摘　　要：氧气还原反应(ORR)过程涉及氧气结合、电子转移、质子转移、中间体的转变,面临着动力学缓慢和选择性差的问题.因此,需要根据不同的反应路径设计出更高效、廉价的ORR催化剂.金属卟啉和咔咯分子催化剂具有较高的催化活性,可以通过设计不同的分子结构,调控催化剂的活性和选择性.其丰富的光谱特征有助于辨别ORR中产生的中间体,研究ORR反应的机理.本文综述了金属卟啉和咔咯的几种结构效应对ORR反应机理的调控作用.对这些结构效应的进一步了解,有助于设计高效的ORR分子催化剂.The oxygen reduction reaction(ORR)involves several key steps,such as O_(2)binding,electron transfer,protonation,and O–O bond cleavage.Due to the sluggish kinetics of ORR,efficient and inexpensive catalysts are required according to different reaction paths.In addition to high activities,metal porphyrins and metal corroles have the benefits of studying the ORR reaction mechanisms and structure-function relationships because their structures can be systematically modified.Their rich and characteristic spectroscopic features are crucial for probing and identifying reaction intermediates.This review summarizes several structural effects of metal porphyrins and corroles on regulating the ORR reaction mechanism.Further understanding of these structural effects will be of great value for the rational design of efficient ORR molecular catalysts.

关 键 词：氧还原 金属卟啉 金属咔咯 反应机理 电催化 

分 类 号：O643.36[理学—物理化学] TQ031[理学—化学]