Synthesis and characterization of wet chemically derived magnetite-hap hybrid nanoparticles

S. Hayakawa, K. Tsuru, A. Matsumoto, A. Osaka, E. Fujii, K. Kawabata

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

A new type of hyperthermia or magnetic resonance imaging materials with bone-bonding ability was explored within the framework of magnetic-bone mineral composite ceramics. That is, hydroxyapatite (HAp) nanoparticles, hybridized with ferrous (Fe2+) and ferric (Fe3+) ions (Fe(II) and Fe(III)), were synthesized through the wet chemical procedure, and characterized in terms of crystal structures, magnetic properties and protein adsorption properties. The as-synthesized particles derived from precursor solutions with FeCl2 consisted of hydroxyapatite (JCPDS 09-0432) (20-30 nm in size) and magnetite (JCPDS 19-0629) (2-5 nm in size). They showed super-paramagnetic behavior, yet their saturation magnetization increased with the content of Fe(II) in the solutions up to 4.3 emu/g. From TEM observations, the HAp particles were rod-like, by which the magnetite particles that seemed spherical rather than showing cubic morphology, were surrounded. The particles from the solutions with Fe(III) gave only HAp, and hence Fe(III) was considered to form an amorphous phase. Moreover, Fe(III) incorporation suppressed HAp crystal growth.

本文言語英語
ホスト出版物のタイトルAdvances in Bioceramics and Porous Ceramics II - A Collection of Papers Presented at the 33rd International Conference on Advanced Ceramics and Composites
ページ105-112
ページ数8
6
出版ステータス出版済み - 5 13 2010
イベントAdvances in Bioceramics and Porous Ceramics II - 33rd International Conference on Advanced Ceramics and Composites - Daytona Beach, FL, 米国
継続期間: 1 18 20091 23 2009

出版物シリーズ

名前Ceramic Engineering and Science Proceedings
番号6
30
ISSN(印刷版)0196-6219

その他

その他Advances in Bioceramics and Porous Ceramics II - 33rd International Conference on Advanced Ceramics and Composites
国/地域米国
CityDaytona Beach, FL
Period1/18/091/23/09

All Science Journal Classification (ASJC) codes

  • セラミックおよび複合材料
  • 材料化学

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