Continuous synthesis of magnetite nanoparticles in supercritical methanol

Bambang Veriansyah, Jae Duck Kim, Byoung Koun Min, Jaehoon Kim

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Magnetite (Fe3O4) nanoparticles are synthesized continuously in supercritical methanol (scMeOH) without using reducing agents at 30 MPa, 400 °C and a residence time of 38 s. XRD analysis reveals that particles synthesized in scMeOH retain magnetite crystalline structure while particles synthesized in supercritical water retain hematite (α-Fe 2O3) crystalline structure. The scMeOH acts both as a reaction medium and a reducing agent. The magnetite nanoparticles are spherical in shape with an average diameter of 21 ± 2 nm, as measured using SEM and TEM. The saturation magnetization of the magnetite nanoparticle is 76.6 emu/g. Crown

Original languageEnglish
Pages (from-to)2197-2200
Number of pages4
JournalMaterials Letters
Volume64
Issue number20
DOIs
Publication statusPublished - 2010 Oct 31

Fingerprint

Magnetite Nanoparticles
Magnetite nanoparticles
Reducing Agents
magnetite
Methanol
methyl alcohol
Reducing agents
Ferrosoferric Oxide
Crystalline materials
nanoparticles
Saturation magnetization
synthesis
Hematite
Magnetite
Transmission electron microscopy
Scanning electron microscopy
Water
hematite
saturation
magnetization

Keywords

  • Magnetic materials
  • Magnetite
  • Nanomaterials
  • Supercritical methanol

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Continuous synthesis of magnetite nanoparticles in supercritical methanol. / Veriansyah, Bambang; Kim, Jae Duck; Min, Byoung Koun; Kim, Jaehoon.

In: Materials Letters, Vol. 64, No. 20, 31.10.2010, p. 2197-2200.

Research output: Contribution to journalArticle

Veriansyah, Bambang ; Kim, Jae Duck ; Min, Byoung Koun ; Kim, Jaehoon. / Continuous synthesis of magnetite nanoparticles in supercritical methanol. In: Materials Letters. 2010 ; Vol. 64, No. 20. pp. 2197-2200.
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