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Integration of Plasmonic Effects and Schottky Junctions into Metal–Organic Framework Composites: Steering Charge Flow for Enhanced Visible‐Light Photocatalysis
Author(s) -
Xiao JuanDing,
Han Lili,
Luo Jun,
Yu ShuHong,
Jiang HaiLong
Publication year - 2018
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201711725
Subject(s) - photocatalysis , materials science , nanorod , schottky barrier , surface plasmon resonance , visible spectrum , metal organic framework , semiconductor , plasmon , absorption (acoustics) , photochemistry , noble metal , photoinduced charge separation , catalysis , optoelectronics , nanotechnology , metal , composite material , nanoparticle , chemistry , artificial photosynthesis , biochemistry , adsorption , diode , metallurgy
A wide range of light absorption and rapid electron–hole separation are desired for efficient photocatalysis. Herein, on the basis of a semiconductor‐like metal–organic framework (MOF), a Pt@MOF/Au catalyst with two types of metal–MOF interfaces integrates the surface plasmon resonance excitation of Au nanorods with a Pt‐MOF Schottky junction, which not only extends the light absorption of the MOF from the UV to the visible region but also greatly accelerates charge transfer. The spatial separation of Pt and Au particles by the MOF further steers the formation of charge flow and expedites the charge migration. As a result, the Pt@MOF/Au presents an exceptionally high photocatalytic H 2 production rate by water splitting under visible light irradiation, far superior to Pt/MOF/Au, MOF/Au and other counterparts with similar Pt or Au contents, highlighting the important role of each component and the Pt location in the catalyst.