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

doi:10.1002/cplu.201600148

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

Chempluschem. 2016 Jun;81(6):521-525. doi: 10.1002/cplu.201600148. Epub 2016 May 20.

Authors

Yusuke Yamada¹, Hideyuki Tadokoro², Masood Naqshbandi³, John Canning⁴, Maxwell J Crossley³, Tomoyoshi Suenobu², Shunichi Fukuzumi^{5

6}

Affiliations

¹ Department of Applied Chemistry and Bioengineering, Graduate School of Engineering, Osaka City University, Osaka, 558-8585, Japan.
² Department of Material and Life Science, Graduate School of Engineering, ALCA and SENTAN, Japan Science and Technology Agency (JST), Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871, Japan.
³ School of Chemistry, The University of Sydney, Sydney, NSW, 2006, Australia.
⁴ Interdisciplinary Photonics Laboratories, School of Chemistry, The University of Sydney, Sydney, NSW, 2006, Australia.
⁵ Department of Chemistry and Nano Science, Ewha Womans University, Seoul, 120-750, Republic of Korea.
⁶ Faculty of Science and Engineering, Meijo University, Shiogamaguchi, Tenpaku-ku, Nagoya, Aichi, 468-0073, Japan.

PMID: 31968919
DOI: 10.1002/cplu.201600148

Abstract

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

Keywords: mesocrystals; mesoporous materials; nanoparticles; photocatalysts; self-assembly.

Abstract

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