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Hydrogen Production from Hydrophobic Ruthenium Dye-Sensitized TiO2 Photocatalyst Assisted by Vesicle Formation

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Title: Hydrogen Production from Hydrophobic Ruthenium Dye-Sensitized TiO2 Photocatalyst Assisted by Vesicle Formation
Authors: Higashida, Yusuke Browse this author
Takizawa, Shin-ya Browse this author →KAKEN DB
Yoshida, Masaki Browse this author →KAKEN DB
Kato, Masako Browse this author →KAKEN DB
Kobayashi, Atsushi Browse this author
Keywords: photocatalysis
dye sensitization
H-2 production
Issue Date: 7-Jun-2023
Publisher: American Chemical Society
Journal Title: ACS applied materials & interfaces
Volume: 15
Issue: 22
Start Page: 27277
End Page: 27284
Publisher DOI: 10.1021/acsami.3c02340
Abstract: Dye-sensitizedH(2) evolution photocatalysts have attractedconsiderable attention as promising systems for the photochemicalgeneration of H-2 from water. In this study, to mimic thereaction field of natural photosynthesis artificially, we synthesizeda hydrophobic Ru-(II) dye-sensitized Pt-TiO2 nanoparticlephotocatalyst, RuC ( 9 )@Pt-TiO2 (RuC ( 9 ) = [Ru-(dC(9)bpy)(2)(H(4)dmpbpy)](2+); dC(9)bpy = 4,4 '-dinonyl-2,2 '-bipyridine, H(4)dmpbpy= 4,4 '-dimethyl phosphonic acid-2,2 '-bipyridine), andintegrated it into 1,2-dipalmitoyl-sn-glycero-3-phosphocholine(DPPC) lipid bilayer vesicle membranes. The photocatalytic H-2 production activity in 0.5 M l-ascorbic acid aqueous solutionenhanced by more than three times in the presence of DPPC vesicles(apparent quantum yield = 2.11%), whereas such a significant enhancementwas hardly observed when the vesicle formation was omitted. Theseresults indicate that the highly dispersed state of the hydrophobic RuC ( 9 )@Pt-TiO2 nanoparticlesin the DPPC bilayer vesicles is a key factor in achieving enhancedphotocatalytic H-2 production activity in aqueous solution.
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials & Interfaces , copyright © 2023 American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
Type: article (author version)
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 小林 厚志

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