Efficient hydrogen generation of a cobalt porphyrin-bridged covalent triazine polymer

Yuqin Dou; Xin Yang; Qi Wang; Zhaodi Yang; Aijian Wang; Long Zhao; Weihua Zhu

doi:10.1016/j.jcis.2023.04.082

Efficient hydrogen generation of a cobalt porphyrin-bridged covalent triazine polymer

J Colloid Interface Sci. 2023 Aug 15:644:256-263. doi: 10.1016/j.jcis.2023.04.082. Epub 2023 Apr 24.

Authors

Yuqin Dou¹, Xin Yang¹, Qi Wang¹, Zhaodi Yang², Aijian Wang³, Long Zhao¹, Weihua Zhu¹

Affiliations

¹ School of Chemistry & Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
² College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin 150040, PRChina. Electronic address: yangzhaodi@163.com.
³ School of Chemistry & Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China. Electronic address: wajujs@ujs.edu.cn.

PMID: 37120874
DOI: 10.1016/j.jcis.2023.04.082

Abstract

Hydrogen production obtained by electrocatalytic water splitting exhibits great promise in addressing both energy shortage and environmental contamination. Herein, we prepared a novel cobalt porphyrin (CoTAPP)-bridged covalent triazine polymer (CoTAPPCC) by covalently linking CoTAPP with cyanuric chloride (CC) for catalytic hydrogen evolution reaction (HER). Both experimental techniques and density functional theory (DFT) calculations were used to evaluate the correlation of HER activity with molecular structures. Benefiting from the strong electronic interactions between the CC unit and the CoTAPP moiety, a standard current density at 10 mA cm^-2 is obtained for CoTAPPCC with a low overpotential of 150 mV in acid, which is comparable to or better than the best records reported previously. Additionally, a competitive HER activity in basic medium is obtained for CoTAPPCC. The strategy reported herein is valuable for designing and developing porphyrin-based efficient HER electrocatalysts.

Keywords: Covalent triazine polymer; Electronic interaction; Hydrogen evolution reaction; Metal porphyrin.