Amine-Functionalized Fe2O3-SiO2 Core-Shell Nanoparticles with Tunable Sizes

Yun Teng, Chengpeng Jiang, Antonio Ruotolo, Philip W.T. Pong

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


Iron oxide magnetic nanoparticles (MNPs) coated with uniform silica shell were synthesized through thermal decomposition and inverse microemulsion methods. The iron oxide MNPs were further coated with silica shells through hydrolysis reaction. For the resulting core-shell MNPs, size regulation of both the magnetic core and the porous shell were achieved, enabling the modulation of their magnetic properties and magnetic interactions. Core-shell MNPs were finally functionalized with amine groups, and immobilized on gold surface due to charge-neutral amine/gold interactions. It was observed that the immobilization process was enhanced under external magnetic field.

Original languageEnglish (US)
Article number7776953
Pages (from-to)69-77
Number of pages9
JournalIEEE Transactions on Nanotechnology
Issue number1
StatePublished - Jan 2018
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering


  • Core-shell nanoparticle
  • Magnetic nanoparticle
  • Nanoparticle functionalization
  • Nanoparticle size control


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