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MoP 4 Nanoparticles as a Novel and Efficient Cocatalyst for Enhanced Photocatalytic Hydrogen Evolution
Author(s) -
Liu Xing,
Jiang Yanqiu,
Li Yudong,
Wang Zhe,
Li Junzhuo,
Huo Hang,
Lin Kaifeng,
Du Yunchen
Publication year - 2019
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201901476
Subject(s) - photocatalysis , nanorod , phosphide , noble metal , nanoparticle , catalysis , materials science , hydrogen production , hydrogen , charge carrier , chemical engineering , nanotechnology , photochemistry , metal , chemistry , optoelectronics , biochemistry , organic chemistry , engineering , metallurgy
Abstract In this work, MoP 4 nanoparticles were in situ loaded onto CdS nanorods (CdS NRs) via vapor‐solid phase synthesis and the composite of MoP 4 /CdS proved to be active for photocatalytic hydrogen evolution under visible‐light irradiation, in which MoP 4 nanoparticles can work as a novel and efficient cocatalyst. MoP 4 /CdS can achieve a much higher hydrogen evolution rate of 494.5 μmol h −1 than that of the pristine CdS NRs (22.6 times), and even higher than of the noble metal Pt (2.0 %) loaded on CdS NRs, indicating that MoP 4 nanoparticles can replace noble metals as a potential cocatalyst with ultra‐high catalytic activity. Based on the structural and photoelectrical characterization results, the catalytic mechanism of MoP 4 /CdS was proposed. The enhanced photocatalytic activity of MoP 4 /CdS is attributed to the promoted charge separation, low hydrogen evolution over‐potential, a long average lifetime for photogenerated carriers and enhanced abilities to inhibit electron‐hole pair recombination. In the field, this work provides guidance for the design and preparation of novel and efficient cocatalyst of phosphide.