A facile approach to prepare metalloporphyrin-based porous organic polymer for boosting hydrogen evolution activity.

Integration of metalloporphyrin moieties into the porous organic polymer (POP) framework via conjugated linkages can contribute to the hydrogen evolution reaction (HER) performance, due to the interpenetrated macrocyclic hollow channels, and the well-defined catalytic sites. Herein, a porous cobalt porphyrinic network (CoTPP-POP) with benzene linkages was designed and prepared for water reduction. CoTPP-POP exhibits the excellent HER performance with a low overpotential (150 mV at 10 mA cm−2), good long-term durability and remarkable Faradaic efficiency in acidic medium. The HER performance of CoTPP-POP is comparable to many previously reported non-noble electrocatalysts. This contribution demonstrates a facile approach to design other advanced systems for energy-related electrocatalysis. • A porous cobalt porphyrinic network (CoTPP-POP) with benzene linkages was designed. • CoTPP-POP exhibits relative low overpotential of 150 mV to reach 10 mA cm−2. • The effective HER activity is ascribed to a combination of mechanisms. [ABSTRACT FROM AUTHOR]