Surface modification of γ-Fe2O3 nanoparticles with aminopropylsilyl groups and interparticle linkage with α,ω- dicarboxylic acids

Hironori Iida, Takuya Nakanishi, Tetsuya Osaka

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An investigation was carried out on the surface modification of γ-Fe2O3 nanoparticles with aminopropylsilyl (APS) groups in 3-aminopropyltriethoxysilane and the interparticle linkage with α,ω-dicarboxylic acids (succinic acid and suberic acid) through the terminal amino groups of APS moiety at the surface of γ-Fe 2O3 nanoparticles. It was demonstrated that the change in interparticle distance caused by these surface modifications influences the magnetic property of the composites. When γ-Fe2O3 nanoparticles were modified with APS groups, coercivity increased and when they were further modified with α,ω-dicarboxylic acids, the larger decrease in coercivity was observed with the longer dicarboxylic acid.

Original languageEnglish
Pages (from-to)855-859
Number of pages5
JournalElectrochimica Acta
Issue number5
Publication statusPublished - 2005 Nov 10



  • Interparticle linkage
  • Magnetic interaction
  • Magnetic nanoparticle
  • Nanocomposite
  • Surface modification

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

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