Development of Catalytic Hydrogen Evolution Systems Using Organic Nanoparticles

2015 Fiscal Year Final Research Report

• Project/Area Number: 26620154
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Energy-related chemistry
• Research Institution: Osaka University
• Principal Investigator: Ohkubo Kei 大阪大学, 工学(系)研究科(研究院), 教授 (00379140)
• Co-Investigator(Renkei-kenkyūsha): FUKUZUMI Shunichi 大阪大学, 大学院工学研究科, 名誉教授 (40144430)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 光触媒 / 電子移動 / レーザー光 / ナノカーボン / フラーレン / ナノチューブ / 一重項酸素 / 水素発生

Outline of Final Research Achievements

Metal-free photocatalytic hydrogen evolution occurred efficiently in benzene containing single-walled carbon nanotubes under laser irradiation at 532 nm with an extremely high turnover number of 2 000 000 and a high quantum yield of 130%.
Laser pulse irradiation of a deaerated aqueous solution containing the solid state lithium ion-encapsulated fullerene resulted in the formation of highly dispersed nano-aggregates (Li+@C60)n. Photoirradiation of an O2-saturated D2O solution containing (Li+@C60)n gave singlet oxygen with 55% quantum yield, leading to efficient double-stranded DNA cleavage.
In conclusion, highly dispersed nanocarbons have new catalytic properties for hydrogen evolution and singlet oxygen generation.

Free Research Field

有機光触媒