Studies on effective use of β-ray emitter fixed in titanium dioxide nanoparticles

Research Project

Project/Area Number	22656186
Research Category	Grant-in-Aid for Challenging Exploratory Research
Allocation Type	Single-year Grants
Research Field	Catalyst/Resource chemical process
Research Institution	The University of Tokushima
Principal Investigator	MIYOSHI Hirokazu 徳島大学, アイソトープ総合センター, 教授 (90229906)
Project Period (FY)	2010 – 2012
Project Status	Completed (Fiscal Year 2012)
Budget Amount *help	¥3,050,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥450,000) Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000) Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000) Fiscal Year 2010: ¥1,100,000 (Direct Cost: ¥1,100,000)
Keywords	β線 / 酸化チタンナノ粒子 / 光酸化電流 / トリチウム / 色素増感 / 表面準位 / 酸化チタン / ナノ粒子 / 光応答 / チオニン / ナイルブルー
Research Abstract	Tritium, which is a beta-emitter, was encapsulated in titanium dioxide particles. Photooxidative current of an ITO electrode modified by tritium encapsulated titanium dioxide increased comparing with that of titanium oxide without tritium. The similar results were observed even in a photosensitization with thionine dye. These indicated an beta-ray effect thathad an absorption of a sub-band in a visible region. The photooxidative current was stabilized by using titanium dioxide nanoparticles using Nafion.