在联吡啶共价有机框架上构建单原子位点用于选择性电化学生产羟基自由基。

Constructing single atom sites on bipyridine covalent organic frameworks for selective electrochemical production of HO.

作者信息

Huang Shaoda, Zhang Bingyan, Sun Huimin, Hu Hongyin, Wang Jinyan, Duan Fang, Zhu Han, Du Mingliang, Lu Shuanglong

机构信息

Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi, Jiangsu 214122, P. R. China.

School of Materials Science and Engineering, Natural Sciences and Science Education in National Institute of Education, Nanyang Technological University, Singapore, 637616, Singapore.

出版信息

Chem Commun (Camb). 2023 Aug 24;59(69):10424-10427. doi: 10.1039/d3cc02948d.

DOI:10.1039/d3cc02948d

PMID:37555232

Abstract

We developed a series of single atom catalysts (SACs) anchored on bipyridine-rich COFs. By tuning the active metal center, the optimal Py-Bpy-COF-Zn shows the highest selectivity of 99.1% and excellent stability toward HO production oxygen reduction, which can be attributed to the high *OOH dissociation barrier indicated by the theoretical calculations. As a proof of concept, it acts as a cathodic catalyst in a homemade Zn-air battery, together with efficient wastewater treatment.

摘要

我们开发了一系列锚定在富含联吡啶的共价有机框架（COFs）上的单原子催化剂（SACs）。通过调整活性金属中心，最优的Py-Bpy-COF-Zn对析氧反应显示出99.1%的最高选择性和优异的稳定性，这可归因于理论计算表明的高*OOH解离能垒。作为概念验证，它在自制的锌空气电池中作为阴极催化剂，同时还能实现高效的废水处理。