Morphology and magnetic properties of iron oxide nanostructures synthesized with biogenic polyamines

Sangaraju Shanmugam, Takuya Nakanishi, Tetsuya Osaka

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

A facile and simple approach for the synthesis of nanosized iron oxide and oxyhydroxide using biogenic polyamines is described. At room temperature, the highly crystalline nanoparticles of magnetite (Fe3 O4) with average sizes of 44±2 and 37±1 nm were synthesized with spermine and spermidine, respectively. The magnetite nanoparticles formed by the biogenic polyamines exhibited a ferrimagnetic behavior at room temperature. When the same reaction was carried out at low temperature, crystalline nanorods of lepidocrocite (γ -FeOOH) with a high aspect ratio were formed. It was revealed that the lepidocrocite nanorods with an aspect ratio of 70 formed bundles, each of which consisted of several nanorods stacked together by the side on fashion. It was suggested that the nanorods are of single-crystalline nature and exhibit a superparamagnetic behavior at room temperature. As the reaction temperature increased from 40 to 70°C, the formation of magnetite nanotetrapods, nanorods, and nanoparticles was observed depending on the reaction temperatures. Magnetic properties of products were demonstrated to depend on the morphology, the degree of crystallinity, and the presence of amorphous oxyhydroxide.

Original languageEnglish
JournalJournal of the Electrochemical Society
Volume156
Issue number7
DOIs
Publication statusPublished - 2009

Fingerprint

Biogenic Polyamines
Iron oxides
iron oxides
nanorods
Nanostructures
Magnetic properties
Nanorods
magnetic properties
magnetite
Magnetite Nanoparticles
nanoparticles
Magnetite
Crystalline materials
room temperature
Temperature
Aspect ratio
Ferrosoferric Oxide
Nanoparticles
Magnetite nanoparticles
high aspect ratio

ASJC Scopus subject areas

  • Electrochemistry
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Renewable Energy, Sustainability and the Environment
  • Condensed Matter Physics

Cite this

Morphology and magnetic properties of iron oxide nanostructures synthesized with biogenic polyamines. / Shanmugam, Sangaraju; Nakanishi, Takuya; Osaka, Tetsuya.

In: Journal of the Electrochemical Society, Vol. 156, No. 7, 2009.

Research output: Contribution to journalArticle

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