Pyrolyzed cobalt porphyrin-based conjugated mesoporous polymers as bifunctional catalysts for hydrogen production and oxygen evolution in water

Hongxing Jia; Yuchuan Yao; Yuyue Gao; Dapeng Lu; Pingwu Du

doi:10.1039/c6cc06972j

Pyrolyzed cobalt porphyrin-based conjugated mesoporous polymers as bifunctional catalysts for hydrogen production and oxygen evolution in water

Chem Commun (Camb). 2016 Nov 10;52(92):13483-13486. doi: 10.1039/c6cc06972j.

Authors

Hongxing Jia¹, Yuchuan Yao¹, Yuyue Gao¹, Dapeng Lu¹, Pingwu Du¹

Affiliation

¹ Key Laboratory of Materials for Energy Conversion, Chinese Academy of Sciences, Department of Materials Science and Engineering, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), University of Science and Technology of China (USTC), 96 Jinzhai Road, Hefei, Anhui Province 230026, P. R. China. [email protected].

PMID: 27791208
DOI: 10.1039/c6cc06972j

Abstract

In this present study, a series of cobalt porphyrin-based conjugated mesoporous polymers (CoP-nph-CMP, n = 2, 3, 4) were fabricated as catalyst precursors to generate bifunctional catalysts via pyrolysis (CoP-nph-CMP-800, n = 2, 3, 4) for both the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER). Among these catalysts, CoP-2ph-CMP-800 exhibited the best catalytic activity with quite a low overpotential for both the OER (η = 370 mV for 10 mA cm^-2) and the HER (η = 360 mV for 10 mA cm^-2). Moreover, their excellent bifunctional catalytic performance was also explored in the overall water splitting test (η = 760 mV for 10 mA cm^-2).