Development of multimodal photoenergy converters with photoluminescence and photocatalytic activity

Research Project

Project/Area Number	26790017
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Multi-year Fund
Research Field	Nanomaterials chemistry
Research Institution	National Institute of Advanced Industrial Science and Technology (2015) Keio University (2014)
Principal Investigator	Takeshita Satoru 国立研究開発法人産業技術総合研究所, 化学プロセス研究部門, 研究員 (90631705)
Project Period (FY)	2014-04-01 – 2016-03-31
Project Status	Completed (Fiscal Year 2015)
Budget Amount *help	¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000) Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000) Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords	蛍光体 / 光触媒 / ナノ材料 / 光物性
Outline of Final Research Achievements	Eu3+-doped YVO4 nanoparticles were prepared as a model compound of a multimodal photoenergy converter that shows photoluminescence and photocatalytic activity at the same time. The nanoparticles showed two photoenergy converting functions under UV irradiation: red photoluminescence corresponding to 4f → 4f transitions of Eu3+ and photocatalytic decomposition of methyl orange. These two photoenergy conversion modes have a competitive relation for the compositional range used in this work. The author also found that the dominant photoenergy conversion mode can be controlled by changing Eu3+ concentration and distribution.