Monodisperse MFe2O4 (M = Fe, Co, Mn) Nanoparticles

Shouheng Sun; Hao Zeng; David B. Robinson; Simone Raoux; Philip M. Rice; Shan X. Wang; Guanxiong Li

doi:10.1021/ja0380852

Monodisperse MFe₂O₄ (M = Fe, Co, Mn) Nanoparticles

Shouheng Sun
, Hao Zeng
, David B. Robinson
, Simone Raoux
, Philip M. Rice
, Shan X. Wang
, Guanxiong Li

Physics

IBM
Stanford University

Research output: Contribution to journal › Article › peer-review

3545 Scopus citations

Abstract

High-temperature solution phase reaction of iron(III) acetylacetonate, Fe(acac)₃, with 1,2-hexadecanediol in the presence of oleic acid and oleylamine leads to monodisperse magnetite (Fe₃O₄) nanoparticles. Similarly, reaction of Fe(acac)₃ and Co(acac) ₂ or Mn(acac)₂ with the same diol results in monodisperse CoFe₂O₄ or MnFe₂O₄ nanoparticles. Particle diameter can be tuned from 3 to 20 nm by varying reaction conditions or by seed-mediated growth. The as-synthesized iron oxide nanoparticles have a cubic spinel structure as characterized by HRTEM, SAED, and XRD. Further, Fe₃O₄ can be oxidized to Fe₂O₃, as evidenced by XRD, NEXAFS spectroscopy, and SQUID magnetometry. The hydrophobic nanoparticles can be transformed into hydrophilic ones by adding bipolar surfactants, and aqueous nanoparticle dispersion is readily made. These iron oxide nanoparticles and their dispersions in various media have great potential in magnetic nanodevice and biomagnetic applications.

Original language	English
Pages (from-to)	273-279
Number of pages	7
Journal	Journal of the American Chemical Society
Volume	126
Issue number	1
DOIs	https://doi.org/10.1021/ja0380852
State	Published - Jan 14 2004

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@article{b7c7804e56d346dab117973b42b9ac54,

title = "Monodisperse MFe2O4 (M = Fe, Co, Mn) Nanoparticles",

abstract = "High-temperature solution phase reaction of iron(III) acetylacetonate, Fe(acac)3, with 1,2-hexadecanediol in the presence of oleic acid and oleylamine leads to monodisperse magnetite (Fe3O4) nanoparticles. Similarly, reaction of Fe(acac)3 and Co(acac) 2 or Mn(acac)2 with the same diol results in monodisperse CoFe2O4 or MnFe2O4 nanoparticles. Particle diameter can be tuned from 3 to 20 nm by varying reaction conditions or by seed-mediated growth. The as-synthesized iron oxide nanoparticles have a cubic spinel structure as characterized by HRTEM, SAED, and XRD. Further, Fe3O4 can be oxidized to Fe2O3, as evidenced by XRD, NEXAFS spectroscopy, and SQUID magnetometry. The hydrophobic nanoparticles can be transformed into hydrophilic ones by adding bipolar surfactants, and aqueous nanoparticle dispersion is readily made. These iron oxide nanoparticles and their dispersions in various media have great potential in magnetic nanodevice and biomagnetic applications.",

author = "Shouheng Sun and Hao Zeng and Robinson, \{David B.\} and Simone Raoux and Rice, \{Philip M.\} and Wang, \{Shan X.\} and Guanxiong Li",

year = "2004",

month = jan,

day = "14",

doi = "10.1021/ja0380852",

language = "English",

volume = "126",

pages = "273--279",

journal = "Journal of the American Chemical Society",

issn = "0002-7863",

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T1 - Monodisperse MFe2O4 (M = Fe, Co, Mn) Nanoparticles

AU - Sun, Shouheng

AU - Zeng, Hao

AU - Robinson, David B.

AU - Raoux, Simone

AU - Rice, Philip M.

AU - Wang, Shan X.

AU - Li, Guanxiong

PY - 2004/1/14

Y1 - 2004/1/14

N2 - High-temperature solution phase reaction of iron(III) acetylacetonate, Fe(acac)3, with 1,2-hexadecanediol in the presence of oleic acid and oleylamine leads to monodisperse magnetite (Fe3O4) nanoparticles. Similarly, reaction of Fe(acac)3 and Co(acac) 2 or Mn(acac)2 with the same diol results in monodisperse CoFe2O4 or MnFe2O4 nanoparticles. Particle diameter can be tuned from 3 to 20 nm by varying reaction conditions or by seed-mediated growth. The as-synthesized iron oxide nanoparticles have a cubic spinel structure as characterized by HRTEM, SAED, and XRD. Further, Fe3O4 can be oxidized to Fe2O3, as evidenced by XRD, NEXAFS spectroscopy, and SQUID magnetometry. The hydrophobic nanoparticles can be transformed into hydrophilic ones by adding bipolar surfactants, and aqueous nanoparticle dispersion is readily made. These iron oxide nanoparticles and their dispersions in various media have great potential in magnetic nanodevice and biomagnetic applications.

AB - High-temperature solution phase reaction of iron(III) acetylacetonate, Fe(acac)3, with 1,2-hexadecanediol in the presence of oleic acid and oleylamine leads to monodisperse magnetite (Fe3O4) nanoparticles. Similarly, reaction of Fe(acac)3 and Co(acac) 2 or Mn(acac)2 with the same diol results in monodisperse CoFe2O4 or MnFe2O4 nanoparticles. Particle diameter can be tuned from 3 to 20 nm by varying reaction conditions or by seed-mediated growth. The as-synthesized iron oxide nanoparticles have a cubic spinel structure as characterized by HRTEM, SAED, and XRD. Further, Fe3O4 can be oxidized to Fe2O3, as evidenced by XRD, NEXAFS spectroscopy, and SQUID magnetometry. The hydrophobic nanoparticles can be transformed into hydrophilic ones by adding bipolar surfactants, and aqueous nanoparticle dispersion is readily made. These iron oxide nanoparticles and their dispersions in various media have great potential in magnetic nanodevice and biomagnetic applications.

UR - https://www.scopus.com/pages/publications/0345868487

U2 - 10.1021/ja0380852

DO - 10.1021/ja0380852

M3 - Article

AN - SCOPUS:0345868487

SN - 0002-7863

VL - 126

SP - 273

EP - 279

JO - Journal of the American Chemical Society

JF - Journal of the American Chemical Society

IS - 1

ER -

Monodisperse MFe₂O₄ (M = Fe, Co, Mn) Nanoparticles

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