In-situ decorated cobalt phosphide cocatalyst on Hittorf's phosphorus triggering efficient photocatalytic hydrogen production

Abiduweili Sikandaier, Yukun Zhu*, Dongjiang Yang*

Chin. J. Struct. Chem., 2024, 43: 100242. DOI: 10.1016/j.cjsc.2024.100242

February 2024

ABSTRACT

Hittorf's phosphorus (HP) is a promising visible-light-driven photocatalyst, yet the slow charge migration capacity and sluggish surface reaction kinetics have limited its photocatalytic hydrogen evolution reaction (HER) efficiency. In this work, cobalt phosphide (CoP2) modified rod-like HP (HP/CoP2) composite was designed and synthesized by a template-assisted chemical vapor deposition strategy. The optimal HP/CoP2 composite yields a HER rate reaching 13.1 μmol h1 through pure water splitting under visible light irradiation, which is approximately 4 times higher than that of HP using Pt as cocatalyst (3.3 μmol h1). It was experimentally indicated that the accelerated photogenerated charge transfer and promoted surface HER kinetics in the composite gave rise to the superior photocatalytic HER performance.


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