Facile preparation of nanosized MoP as cocatalyst coupled with g-C3N4 by surface bonding state for enhanced photocatalytic hydrogen production

By Cheng Cheng, Shichao Zong, Jinwen Shi, Fei Xue, Yazhou Zhang, X. Guan, Botong Zheng, Junkai Deng, Liejin Guo. 2020

194 citations recorded by the source corpus.

Abstract In this work, nanosized MoP was synthetized in a novel phosphorization process at a relatively low temperature under an ambient-air atmosphere and then assembled with g-C3N4 to form MoP/g-C3N4 coupled photocatalyst by a mixing and heat-treating method. Significantly, the obtained noble-metal-free MoP/g-C3N4 photocatalyst showed superior photocatalytic H2-production activity and excellent stability than most reported noble-metal-free cocatalysts modified g-C3N4. The optimal MoP/g-C3N4 photocatalyst possessed a H2-production activity of 3868 μmol h−1 gcat−1 and the corresponding AQY reached 21.6 % at 405 nm. The incorporation of nanosized MoP into g-C3N4 could broaden the absorption range of visible light, built a conducive highway (Mo(δ+)−N(δ−) bond) for electrons to transfer from g-C3N4 to MoP, which improved the separation and transportation efficiency of charge carriers, and reduce the energy barrier for hydrogen evolution reaction. This work provided a reliable guideline for designing novel and simple synthetic method for cocatalyst and then constructing cocatalyst/photocatalyst coupled structure.

Subfields: Materials Chemistry, Renewable Energy, Sustainability and the Environment

View Paper: https://www.semanticscholar.org/paper/0f83b66ceb9e729ef58243d80e1c92aad343edf7