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Nanofabrication of a Solid‐State, Mesoporous Nanoparticle Composite for Efficient Photocatalytic Hydrogen Generation
Author(s) -
Yamada Yusuke,
Tadokoro Hideyuki,
Naqshbandi Masood,
Canning John,
Crossley Maxwell J.,
Suenobu Tomoyoshi,
Fukuzumi Shunichi
Publication year - 2016
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.201600148
Subject(s) - photocatalysis , chemistry , mesoporous material , catalysis , nanoparticle , hydrogen production , chemical engineering , molecule , photochemistry , ion , water splitting , nanotechnology , inorganic chemistry , materials science , organic chemistry , engineering
Room‐temperature self‐assembly was used to fabricate a periodic array of uniformly sized Al 3+ ‐doped SiO 2 nanoparticles (Al−SiO 2 NPs, 20–30 nm). The uniform mesoporous structure was suitable for uniformly incorporating and distributing Pt nanoparticles (PtNPs), which were used as hydrogen‐evolution catalysts in artificial photosynthetic systems, without agglomeration during the catalytic reaction. When the surfaces of the Al−SiO 2 NPs were covered with an organic photocatalyst (2‐phenyl‐4‐(1‐naphthyl)quinolinium ion, QuPh + ‐NA), each PtNP was surrounded by multiple QuPh + ‐NA ions. The structure allowed the PtNP to receive multiple electrons from QuPh . ‐NA molecules, which were generated by reduction of the photoexcited state of QuPh + ‐NA ions (QuPh . ‐NA . + ) with β‐dihydronicotinamide adenine dinucleotide (NADH), thereby resulting in efficient photocatalytic H 2 evolution.