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Single Pt Atoms Confined into a Metal–Organic Framework for Efficient Photocatalysis
Author(s) -
Fang Xinzuo,
Shang Qichao,
Wang Yu,
Jiao Long,
Yao Tao,
Li Yafei,
Zhang Qun,
Luo Yi,
Jiang HaiLong
Publication year - 2018
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201705112
Subject(s) - photocatalysis , materials science , metal organic framework , photochemistry , photocatalytic water splitting , ultrafast laser spectroscopy , electron transfer , photosensitizer , water splitting , noble metal , density functional theory , hydrogen , chemical physics , hydrogen production , spectroscopy , acceptor , dispersion (optics) , metal , nanotechnology , catalysis , chemistry , computational chemistry , biochemistry , adsorption , quantum mechanics , metallurgy , physics , organic chemistry , optics , condensed matter physics
It is highly desirable yet remains challenging to improve the dispersion and usage of noble metal cocatalysts, beneficial to charge transfer in photocatalysis. Herein, for the first time, single Pt atoms are successfully confined into a metal–organic framework (MOF), in which electrons transfer from the MOF photosensitizer to the Pt acceptor for hydrogen production by water splitting under visible‐light irradiation. Remarkably, the single Pt atoms exhibit a superb activity, giving a turnover frequency of 35 h −1 , ≈30 times that of Pt nanoparticles stabilized by the same MOF. Ultrafast transient absorption spectroscopy further unveils that the single Pt atoms confined into the MOF provide highly efficient electron transfer channels and density functional theory calculations indicate that the introduction of single Pt atoms into the MOF improves the hydrogen binding energy, thus greatly boosting the photocatalytic H 2 production activity.