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

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish
Title of host publicationAdvances in Bioceramics and Porous Ceramics II - A Collection of Papers Presented at the 33rd International Conference on Advanced Ceramics and Composites
Pages105-112
Number of pages8
Edition6
Publication statusPublished - May 13 2010
EventAdvances in Bioceramics and Porous Ceramics II - 33rd International Conference on Advanced Ceramics and Composites - Daytona Beach, FL, United States
Duration: Jan 18 2009Jan 23 2009

Publication series

NameCeramic Engineering and Science Proceedings
Number6
Volume30
ISSN (Print)0196-6219

Other

OtherAdvances in Bioceramics and Porous Ceramics II - 33rd International Conference on Advanced Ceramics and Composites
CountryUnited States
CityDaytona Beach, FL
Period1/18/091/23/09

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

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    Hayakawa, S., Tsuru, K., Matsumoto, A., Osaka, A., Fujii, E., & Kawabata, K. (2010). Synthesis and characterization of wet chemically derived magnetite-hap hybrid nanoparticles. In Advances in Bioceramics and Porous Ceramics II - A Collection of Papers Presented at the 33rd International Conference on Advanced Ceramics and Composites (6 ed., pp. 105-112). (Ceramic Engineering and Science Proceedings; Vol. 30, No. 6).