Development of photocatalysts with functionally-separated multi-layered structures and their kinetic investigation

2014 Fiscal Year Final Research Report

• Project/Area Number: 25810112
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Energy-related chemistry
• Research Institution: The University of Tokyo
• Principal Investigator: HISATOMI Takashi 東京大学, 工学(系)研究科(研究院), 助教 (00637481)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 光触媒 / コアシェル構造 / ドーピング / 太陽エネルギー / 水素 / 水分解 / 半導体物性 / 触媒・化学プロセス

Outline of Final Research Achievements

This project aimed at preparation of doped SrTiO3 photocatalysts that were more active than the commonly-used Rh-doped SrTiO3 by designing functional multilayer structures consisting of highly-crystalline core and light absorber shell. SrTiO3:La,Rh that showed the photocatalytic hydrogen evolution activity equal to or higher than SrTiO3:Rh was produced by applying well-crystalline SrTiO3 as the core and SrTiO3 enriched with LaRhO3 content as the shell. It was demonstrated that immobilizing a hydrogen evolution photocatalyst and an oxygen evolution photocatalyst on the same conductive layer upgraded the activity of the photocatalytic system in the water splitting reaction via the two-step photoexcitation.

Free Research Field

半導体上での水の分解反応