NDLI: Visible light-induced water splitting in an aqueous suspension of a plasmonic Au/TiO<sub>2</sub> photocatalyst with metal co-catalysts

Content Provider	Royal Society of Chemistry (RSC)
Author	Tanaka, A. Hosokawa, S. Tanaka, T. Teramura, K. Kominami, H.
Copyright Year	2017
Abstract	We found that plasmonic Au particles on titanium(IV) oxide (TiO2) act as a visible-light-driven photocatalyst for overall water splitting free from any additives. This is the first report showing that surface plasmon resonance (SPR) in a suspension system effectively induces overall water splitting. Modification with various types of metal nanoparticles as co-catalysts enhanced the evolution of H2 and O2. Among these, Ni-modified Au/TiO2 exhibited 5-times higher rates of H2 and O2 evolution than those of Ni-free Au/TiO2. We succeeded in designing a novel solar energy conversion system including three elemental technologies, charge separation with light harvest and an active site for O2 evolution (plasmonic Au particles), charge transfer from Au to the active site for H2 production (TiO2), and an active site for H2 production (Ni cocatalyst), by taking advantage of a technique for fabricating size-controlled Au and Ni nanoparticles. Water splitting occurred in aqueous suspensions of Ni-modified Au/TiO2 even under irradiation of light through an R-62 filter.
Starting Page	2574
Ending Page	2580
Page Count	7
File Format	HTM / HTML PDF
ISSN	20416520
Volume Number	8
Issue Number	4
Journal	Chemical Science
DOI	10.1039/c6sc05135a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Subscribed
Subject Keyword	Water splitting Oxygen AWS Elemental Photocatalysis Active site Solar energy Titanium Surface plasmon resonance Surface plasmon
Content Type	Text
Resource Type	Article
Subject	Chemistry

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