Rapid synthesis of monodispersed α-Fe2O3 nanoparticles from Fe(NO3)3 solution by microwave irradiation

Hiroaki Katsuki, Atsunori Shiraishi, Sridhar Komarneni, Wan Jin Moon, Shoichi Toh, Kenji Kaneko

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Monodispersed α-Fe2O3 nanoparticles were prepared at 100°, 120°, and 140°C using 0.02, 0.05, and 0.1 M-Fe(NO3)3-9H2O solutions by microwave-hydrothermal (M-H) and conventional-hydrothermal(C-H) reactions. Compared to the formation of monodispersed α-Fe2O3 particles using the C-H reaction, the M-H reaction led to increased rate of formation by 3 times at 120°C and 5 times at 140°C from 0.1 M-Fe(NO 3)3 solutions. α-Fe2O3 nanoparticles of 23-25 nm in diameter were obtained from 0.02 M solution at 100°C after treatment for 4 h by applying microwaves, which led to the formation of smaller sized particles with a narrow particle size distribution. The coagulation of nano-sized single crystals of 5 to 6 nm in diameter was enhanced by increasing the concentration of Fe(NO3)3 solutions.

Original languageEnglish
Pages (from-to)384-387
Number of pages4
JournalJournal of the Ceramic Society of Japan
Volume112
Issue number1307
DOIs
Publication statusPublished - Jan 1 2004

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Microwave irradiation
Nanoparticles
microwaves
nanoparticles
irradiation
Microwaves
synthesis
coagulation
Coagulation
particle size distribution
Particle size analysis
Particles (particulate matter)
Single crystals
single crystals

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Cite this

Rapid synthesis of monodispersed α-Fe2O3 nanoparticles from Fe(NO3)3 solution by microwave irradiation. / Katsuki, Hiroaki; Shiraishi, Atsunori; Komarneni, Sridhar; Moon, Wan Jin; Toh, Shoichi; Kaneko, Kenji.

In: Journal of the Ceramic Society of Japan, Vol. 112, No. 1307, 01.01.2004, p. 384-387.

Research output: Contribution to journalArticle

Katsuki, Hiroaki ; Shiraishi, Atsunori ; Komarneni, Sridhar ; Moon, Wan Jin ; Toh, Shoichi ; Kaneko, Kenji. / Rapid synthesis of monodispersed α-Fe2O3 nanoparticles from Fe(NO3)3 solution by microwave irradiation. In: Journal of the Ceramic Society of Japan. 2004 ; Vol. 112, No. 1307. pp. 384-387.
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