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Efficient Visible‐Light‐Driven Hydrogen Generation on g‐C 3 N 4 Coupled with Iron Phosphide
Author(s) -
Sun Zhichao,
Fujitsuka Mamoru,
Shi Chuan,
Zhu Mingshan,
Wang Anjie,
Majima Tetsuro
Publication year - 2019
Publication title -
chemphotochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.13
H-Index - 18
ISSN - 2367-0932
DOI - 10.1002/cptc.201800260
Subject(s) - photocatalysis , phosphide , hydrogen production , visible spectrum , photoluminescence , materials science , hydrogen , water splitting , irradiation , transition metal , absorption (acoustics) , photochemistry , noble metal , metal , optoelectronics , chemistry , catalysis , physics , metallurgy , biochemistry , organic chemistry , nuclear physics , composite material
Transition metal phosphides as promising noble metal free cocatalysts are gaining increasing interest for hydrogen generation and other energy conversion reactions. The present study reports a new Fe 2 P/g‐C 3 N 4 hybrid for efficient photocatalytic hydrogen generation by water splitting under visible light irradiation. The H 2 production rate obtained using this system is approximately 15 times higher than that obtained using pure g‐C 3 N 4 , and is comparable with that of Pt/g‐C 3 N 4 under the same conditions. According to detailed studies using UV/Vis diffuse reflectance and photoluminescence spectroscopies as well as photoelectrochemical measurements, the reason for the high efficiency of the Fe 2 P/g‐C 3 N 4 hybrid is due to a highly effective separation and low recombination rate of photogenerated electrons and holes rather than absorption under visible light. The present study reports a promising non‐toxic photocatalyst with low cost and high natural abundance for improving photocatalytic H 2 generation.