Synthesis and characterisation of flame-sprayed superparamagnetic bare and silicacoated maghemite nanoparticles

Wey Yang Teoh, Dan Li, Cordelia Selomulya, Robert Woodward, Rose Amai

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

2 Citations (Scopus)


Flame Spray Pyrolysis (FSP) was used to synthesize γ-Fe 2O3 and SiO2/γ-Fe2O 3 nanoparticles of different sizes (dBET = 5-60 nm). Bare γ-Fe2O3 displays unique hexagonal/octagonal disc-shaped nanoparticles, while different morphology of SiO2/ γ-Fe2O3 nanoparticles could be produced by varying the ratio of silica and iron precursors during synthesis. The particles were predominantly superparamagnetic at room temperature. The understanding on how different nanostructures were formed was obtained through characterisation of their properties using Transmission Electron Microscopy, X-ray Diffraction, Atomic Force Microscopy, N2 adsorption, and Superconducting Quantum Interference Device magnetometer. The study is particularly useful in order to tailor the properties of these magnetic nanoparticles during synthesis for bio-related applications.

Original languageEnglish
Title of host publication2007 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2007, Technical Proceedings
Number of pages4
Publication statusPublished - 23 Aug 2007
EventNanotechnology Conference and Trade Show (Nanotech) 2007 - Santa Clara, United States of America
Duration: 20 May 200724 May 2007


ConferenceNanotechnology Conference and Trade Show (Nanotech) 2007
Abbreviated titleNSTI Nanotech 2007
Country/TerritoryUnited States of America
CitySanta Clara


  • Characterisation
  • Flame spray pyrolysis
  • Maghemite nanoparticles
  • Synthesis

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