Nanofabrication of a Solid-State, Mesoporous Nanoparticle Composite for Efficient Photocatalytic Hydrogen Generation

Yusuke Yamada, Hideyuki Tadokoro, Masood Naqshbandi, John Canning, Maxwell J. Crossley, Tomoyoshi Suenobu, Shunichi Fukuzumi

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

Room-temperature self-assembly was used to fabricate a periodic array of uniformly sized Al3+-doped SiO2 nanoparticles (Al−SiO2NPs, 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−SiO2NPs 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 H2 evolution.

Original languageEnglish
Pages (from-to)521-525
Number of pages5
JournalChemPlusChem
Volume81
Issue number6
DOIs
StatePublished - 1 Jun 2016

Keywords

  • mesocrystals
  • mesoporous materials
  • nanoparticles
  • photocatalysts
  • self-assembly

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