2013 Fiscal Year Final Research Report

Development of Diamond-shaped Particle Assemblies Using Magnetic Interaction

Research Project

Project/Area Number	24655185
Research Category	Grant-in-Aid for Challenging Exploratory Research
Allocation Type	Single-year Grants
Research Field	Inorganic industrial materials
Research Institution	Hokkaido University
Principal Investigator	OHTANI Bunsho 北海道大学, 触媒化学研究センター, 教授 (80176924)
Project Period (FY)	2012-04-01 – 2014-03-31
Keywords	ナノ粒子 / 粒子集積体 / 磁気粒子
Research Abstract	Preparation method for article assemblies of tetragonal shape using hollow core-shell (hcs) magnetic particles were investigated. First, as a model compound of hcs magnetic particles, titania-core silica-shell hcs particles were successfully prepared and checked their photocatalytic activity for organic synthetic reactions. Then, preparation of hcs magnetic particles through coating of magnetite iron oxide particles with amorphous carbon and silica followed by calcination for removal of carbon layer was tried to obtain hcs magnetic particles with magnetic core of particles assemblies, presumably due to strong magnetic interaction between iron oxide particles. Another strategy for hcs magnetic particles by preparation of non-magnetic hcs particles followed by magnetization was attempted and the latter magnetization reaction was confirmed. The preparation of non-magnetic hcs particles using non-magnetic hematite iron oxide particles was failed due to aggregation.

(4 results)