Continuous synthesis of magnetite nanoparticles in supercritical methanol

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

doi:10.1016/j.matlet.2010.07.018

Continuous synthesis of magnetite nanoparticles in supercritical methanol

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

GREEN SCHOOL (Graduate School of Energy and Environment)

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

40 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 language	English
Pages (from-to)	2197-2200
Number of pages	4
Journal	Materials Letters
Volume	64
Issue number	20
DOIs	https://doi.org/10.1016/j.matlet.2010.07.018
Publication status	Published - 2010 Oct 31

Keywords

Magnetic materials
Magnetite
Nanomaterials
Supercritical methanol

ASJC Scopus subject areas

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

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10.1016/j.matlet.2010.07.018

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title = "Continuous synthesis of magnetite nanoparticles in supercritical methanol",

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",

keywords = "Magnetic materials, Magnetite, Nanomaterials, Supercritical methanol",

author = "Bambang Veriansyah and Kim, {Jae Duck} and Min, {Byoung Koun} and Jaehoon Kim",

note = "Funding Information: This research was supported by Nano R&D program through the Korea Science and Engineering Foundation funded by the Ministry of Education, Science and Technology ( 2008-2002344 ). The authors acknowledge the Korea Research Council of Fundamental Science and Technology (KRCF) and the Korea Institute of Science and Technology (KIST) for {\textquoteleft}National Agenda Program (NAP){\textquoteright} for additional support.",

year = "2010",

month = oct,

day = "31",

doi = "10.1016/j.matlet.2010.07.018",

language = "English",

volume = "64",

pages = "2197--2200",

journal = "Materials Letters",

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T1 - Continuous synthesis of magnetite nanoparticles in supercritical methanol

AU - Veriansyah, Bambang

AU - Kim, Jae Duck

AU - Min, Byoung Koun

AU - Kim, Jaehoon

N1 - Funding Information: This research was supported by Nano R&D program through the Korea Science and Engineering Foundation funded by the Ministry of Education, Science and Technology ( 2008-2002344 ). The authors acknowledge the Korea Research Council of Fundamental Science and Technology (KRCF) and the Korea Institute of Science and Technology (KIST) for ‘National Agenda Program (NAP)’ for additional support.

PY - 2010/10/31

Y1 - 2010/10/31

N2 - 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

AB - 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

KW - Magnetic materials

KW - Magnetite

KW - Nanomaterials

KW - Supercritical methanol

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U2 - 10.1016/j.matlet.2010.07.018

DO - 10.1016/j.matlet.2010.07.018

M3 - Article

AN - SCOPUS:77955081793

SN - 0167-577X

VL - 64

SP - 2197

EP - 2200

JO - Materials Letters

JF - Materials Letters

IS - 20

ER -

Continuous synthesis of magnetite nanoparticles in supercritical methanol

Abstract

Keywords

ASJC Scopus subject areas

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