Synthesis and microstructure of cobalt ferrite nanoparticles
Identifieur interne : 000078 ( PascalFrancis/Checkpoint ); précédent : 000077; suivant : 000079Synthesis and microstructure of cobalt ferrite nanoparticles
Auteurs : L. Ajroudi [France, Tunisie] ; S. Villain [France] ; V. Madigou [France] ; N. Mliki [Tunisie] ; Ch. Leroux [France]Source :
- Journal of crystal growth [ 0022-0248 ] ; 2010.
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- topic : Cobalt.
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Abstract
Cobalt ferrites (CoxFe3-xO4) nanoparticles with various compositions were synthesized by a new non-aqueous synthesis method. The cobalt ferrites were characterized by X-ray diffraction and transmission electron microscopy coupled with energy dispersive spectroscopy. The nanoparticles are highly crystallized with a homogeneous chemical composition. The particle size varies from 4 up to 7.5 nm, depending on the cobalt content. The smallest particles, with a size of 4 nm, are obtained for high cobalt content. These particles also have the highest micro-structural strain. Catalytic measurements were realized using Fourier transform infrared spectroscopy. The lowest activation energy and the highest conversion rate are obtained for Co1.8Fe2.4O4 in the 400-500 °C temperature range.
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R, BP 20132</s1><s2>83957 La Garde</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Provence-Alpes-Côte d'Azur</region><settlement type="city">La Garde</settlement></placeName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>LMOP, Physics Department, Faculty of Sciences of Tunis</s1><s2>2092 Tunis</s2><s3>TUN</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Tunisie</country><placeName><settlement type="city">Tunis</settlement><region nuts="2">Gouvernorat de Tunis</region></placeName></affiliation></author><author><name sortKey="Villain, S" sort="Villain, S" uniqKey="Villain S" first="S." last="Villain">S. Villain</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>IM2NP (UMR-CNRS 6242), Université du Sud Toulon-Var (USTV), Bât. R, BP 20132</s1><s2>83957 La Garde</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Provence-Alpes-Côte d'Azur</region><settlement type="city">La Garde</settlement></placeName></affiliation></author><author><name sortKey="Madigou, V" sort="Madigou, V" uniqKey="Madigou V" first="V." last="Madigou">V. Madigou</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>IM2NP (UMR-CNRS 6242), Université du Sud Toulon-Var (USTV), Bât. R, BP 20132</s1><s2>83957 La Garde</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Provence-Alpes-Côte d'Azur</region><settlement type="city">La Garde</settlement></placeName></affiliation></author><author><name sortKey="Mliki, N" sort="Mliki, N" uniqKey="Mliki N" first="N." last="Mliki">N. 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Ajroudi</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>IM2NP (UMR-CNRS 6242), Université du Sud Toulon-Var (USTV), Bât. R, BP 20132</s1><s2>83957 La Garde</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Provence-Alpes-Côte d'Azur</region><settlement type="city">La Garde</settlement></placeName></affiliation><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>LMOP, Physics Department, Faculty of Sciences of Tunis</s1><s2>2092 Tunis</s2><s3>TUN</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Tunisie</country><placeName><settlement type="city">Tunis</settlement><region nuts="2">Gouvernorat de Tunis</region></placeName></affiliation></author><author><name sortKey="Villain, S" sort="Villain, S" uniqKey="Villain S" first="S." last="Villain">S. Villain</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>IM2NP (UMR-CNRS 6242), Université du Sud Toulon-Var (USTV), Bât. R, BP 20132</s1><s2>83957 La Garde</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Provence-Alpes-Côte d'Azur</region><settlement type="city">La Garde</settlement></placeName></affiliation></author><author><name sortKey="Madigou, V" sort="Madigou, V" uniqKey="Madigou V" first="V." last="Madigou">V. Madigou</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>IM2NP (UMR-CNRS 6242), Université du Sud Toulon-Var (USTV), Bât. R, BP 20132</s1><s2>83957 La Garde</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Provence-Alpes-Côte d'Azur</region><settlement type="city">La Garde</settlement></placeName></affiliation></author><author><name sortKey="Mliki, N" sort="Mliki, N" uniqKey="Mliki N" first="N." last="Mliki">N. Mliki</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>LMOP, Physics Department, Faculty of Sciences of Tunis</s1><s2>2092 Tunis</s2><s3>TUN</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>Tunisie</country><placeName><settlement type="city">Tunis</settlement><region nuts="2">Gouvernorat de Tunis</region></placeName></affiliation></author><author><name sortKey="Leroux, Ch" sort="Leroux, Ch" uniqKey="Leroux C" first="Ch." last="Leroux">Ch. Leroux</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>IM2NP (UMR-CNRS 6242), Université du Sud Toulon-Var (USTV), Bât. R, BP 20132</s1><s2>83957 La Garde</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Provence-Alpes-Côte d'Azur</region><settlement type="city">La Garde</settlement></placeName></affiliation></author></analytic><series><title level="j" type="main">Journal of crystal growth</title><title level="j" type="abbreviated">J. cryst. growth</title><idno type="ISSN">0022-0248</idno><imprint><date when="2010">2010</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Journal of crystal growth</title><title level="j" type="abbreviated">J. cryst. growth</title><idno type="ISSN">0022-0248</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Activation energy</term><term>Chemical composition</term><term>Cobalt</term><term>Dispersive spectrometry</term><term>Fourier transform spectroscopy</term><term>Microstructure</term><term>Nanoparticles</term><term>Nanostructured materials</term><term>Particle size</term><term>Temperature dependence</term><term>Transmission electron microscopy</term><term>XRD</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Microstructure</term><term>Nanoparticule</term><term>Nanomatériau</term><term>Diffraction RX</term><term>Microscopie électronique transmission</term><term>Spectrométrie dispersive</term><term>Composition chimique</term><term>Dimension particule</term><term>Cobalt</term><term>Spectrométrie transformée Fourier</term><term>Energie activation</term><term>Dépendance température</term><term>Ferrite de cobalt</term><term>CoxFe3-xO4</term><term>8107</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Cobalt</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Cobalt ferrites (Co<sub>x</sub>Fe<sub>3-x</sub>O<sub>4</sub>) nanoparticles with various compositions were synthesized by a new non-aqueous synthesis method. The cobalt ferrites were characterized by X-ray diffraction and transmission electron microscopy coupled with energy dispersive spectroscopy. The nanoparticles are highly crystallized with a homogeneous chemical composition. The particle size varies from 4 up to 7.5 nm, depending on the cobalt content. The smallest particles, with a size of 4 nm, are obtained for high cobalt content. These particles also have the highest micro-structural strain. Catalytic measurements were realized using Fourier transform infrared spectroscopy. The lowest activation energy and the highest conversion rate are obtained for Co<sub>1.8</sub>Fe<sub>2.4</sub>O<sub>4</sub> in the 400-500 °C temperature range.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0022-0248</s0></fA01><fA02 i1="01"><s0>JCRGAE</s0></fA02><fA03 i2="1"><s0>J. cryst. growth</s0></fA03><fA05><s2>312</s2></fA05><fA06><s2>16-17</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Synthesis and microstructure of cobalt ferrite nanoparticles</s1></fA08><fA11 i1="01" i2="1"><s1>AJROUDI (L.)</s1></fA11><fA11 i1="02" i2="1"><s1>VILLAIN (S.)</s1></fA11><fA11 i1="03" i2="1"><s1>MADIGOU (V.)</s1></fA11><fA11 i1="04" i2="1"><s1>MLIKI (N.)</s1></fA11><fA11 i1="05" i2="1"><s1>LEROUX (Ch.)</s1></fA11><fA14 i1="01"><s1>IM2NP (UMR-CNRS 6242), Université du Sud Toulon-Var (USTV), Bât. R, BP 20132</s1><s2>83957 La Garde</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ></fA14><fA14 i1="02"><s1>LMOP, Physics Department, Faculty of Sciences of Tunis</s1><s2>2092 Tunis</s2><s3>TUN</s3><sZ>1 aut.</sZ><sZ>4 aut.</sZ></fA14><fA20><s1>2465-2471</s1></fA20><fA21><s1>2010</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>13507</s2><s5>354000193808240330</s5></fA43><fA44><s0>0000</s0><s1>© 2010 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>44 ref.</s0></fA45><fA47 i1="01" i2="1"><s0>10-0379730</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Journal of crystal growth</s0></fA64><fA66 i1="01"><s0>NLD</s0></fA66><fC01 i1="01" l="ENG"><s0>Cobalt ferrites (Co<sub>x</sub>Fe<sub>3-x</sub>O<sub>4</sub>) nanoparticles with various compositions were synthesized by a new non-aqueous synthesis method. The cobalt ferrites were characterized by X-ray diffraction and transmission electron microscopy coupled with energy dispersive spectroscopy. The nanoparticles are highly crystallized with a homogeneous chemical composition. The particle size varies from 4 up to 7.5 nm, depending on the cobalt content. The smallest particles, with a size of 4 nm, are obtained for high cobalt content. These particles also have the highest micro-structural strain. Catalytic measurements were realized using Fourier transform infrared spectroscopy. 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Ajroudi</name></region><name sortKey="Leroux, Ch" sort="Leroux, Ch" uniqKey="Leroux C" first="Ch." last="Leroux">Ch. Leroux</name><name sortKey="Madigou, V" sort="Madigou, V" uniqKey="Madigou V" first="V." last="Madigou">V. Madigou</name><name sortKey="Villain, S" sort="Villain, S" uniqKey="Villain S" first="S." last="Villain">S. Villain</name></country><country name="Tunisie"><region name="Gouvernorat de Tunis"><name sortKey="Ajroudi, L" sort="Ajroudi, L" uniqKey="Ajroudi L" first="L." last="Ajroudi">L. Ajroudi</name></region><name sortKey="Mliki, N" sort="Mliki, N" uniqKey="Mliki N" first="N." last="Mliki">N. Mliki</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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