Nanoscopic Cobalt Ferrite by Sonolysis of M(acac)3 Complexes

D 2008

Nanoscopic Cobalt Ferrite by Sonolysis of M(acac)3 Complexes

OSTŘÍŽEK, Petr, Jiří PINKAS, Radek ZBOŘIL, Zdeněk MORAVEC, Petr BEZDIČKA et. al.

Basic information

Original name

Nanoscopic Cobalt Ferrite by Sonolysis of M(acac)3 Complexes

Name in Czech

Příprava nanoskopického kobaltnatého ferritu sonolýzou komplexů M(acac)3

Authors

OSTŘÍŽEK, Petr (203 Czech Republic), Jiří PINKAS (203 Czech Republic, guarantor), Radek ZBOŘIL (203 Czech Republic), Zdeněk MORAVEC (203 Czech Republic) and Petr BEZDIČKA (203 Czech Republic)

Edition

1. vyd. Basancon, Francie, 11 th Meeting of the European Society of Sonochemistry, p. 181-182, 2 pp. 2008

Publisher

UTINAM Universite de Franche-Comte

Other information

Language

English

Type of outcome

Stať ve sborníku

Field of Study

10402 Inorganic and nuclear chemistry

Country of publisher

France

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 2.796

RIV identification code

RIV/00216224:14310/08:00026052

Organization unit

Faculty of Science

ISSN

Keywords in English

Sonochemistry; Iron; Cobalt; Oxides; Ferrite; Nanoparticles

Abstract

ORIG CZ

V originále

We examined the sonochemical synthesis of CoFe2O4. Composite nanoscopic particles consisting of Co-Fe oxide particles and an organic matrix were prepared by sonolysis of mixtures of 2,4-pentanedionato complexes, M(acac)n, M = Fe, Co; n = 2, 3. The XRD results showed that phase pure CoFe2O4 samples were prepared with a molar content of Co:Fe from 1:1.3 to 1:2.0. Addition of variable amounts of water was found to facilitate the decomposition of precursor complexes. That allowed control of the organics content and the BET surface area of the oxide nanoparticles. Powders with specific surface area as high as 218 m2 g-1 were obtained. FE-SEM was used to examine particle shape, size, and size distribution with an estimated diameter of 20-30 nm. Variable temperature XRD also revealed the spinel crystallization on heating. A small particle size below 20 nm of the crystalline CoFe2O4 is retained up to 600 oC.

In Czech

Studium přípravy nanoskopického kobaltnatého ferritu CoFe2O4 sonolýzou komplexů M(acac)n, M = Fe, Co; n = 2, 3.

Links

MSM0021622410, plan (intention)

Name: Fyzikální a chemické vlastnosti pokročilých materiálů a struktur

Investor: Ministry of Education, Youth and Sports of the CR, Physical and chemical properties of advanced materials and structures

Citovat

OSTŘÍŽEK, Petr, Jiří PINKAS, Radek ZBOŘIL, Zdeněk MORAVEC and Petr BEZDIČKA. Nanoscopic Cobalt Ferrite by Sonolysis of M(acac)3 Complexes. In 11 th Meeting of the European Society of Sonochemistry. 1st ed. Basancon, Francie: UTINAM Universite de Franche-Comte, 2008, p. 181-182. ISSN 1350-4177.

@inproceedings{768957,
   author = {Ostřížek, Petr and Pinkas, Jiří and Zbořil, Radek and Moravec, Zdeněk and Bezdička, Petr},
   address = {Basancon, Francie},
   booktitle = {11 th Meeting of the European Society of Sonochemistry},
   edition = {1},
   keywords = {Sonochemistry; Iron; Cobalt; Oxides; Ferrite; Nanoparticles},
   language = {eng},
   location = {Basancon, Francie},
   pages = {181-182},
   publisher = {UTINAM Universite de Franche-Comte},
   title = {Nanoscopic Cobalt Ferrite by Sonolysis of M(acac)3 Complexes},
   year = {2008}
}

TY  - JOUR
ID  - 768957
AU  - Ostřížek, Petr - Pinkas, Jiří - Zbořil, Radek - Moravec, Zdeněk - Bezdička, Petr
PY  - 2008
TI  - Nanoscopic Cobalt Ferrite by Sonolysis of M(acac)3 Complexes
PB  - UTINAM Universite de Franche-Comte
CY  - Basancon, Francie
KW  - Sonochemistry
KW  - Iron
KW  - Cobalt
KW  - Oxides
KW  - Ferrite
KW  - Nanoparticles
N2  - We examined the sonochemical synthesis of CoFe2O4. Composite nanoscopic particles consisting of Co-Fe oxide particles and an organic matrix were prepared by sonolysis of mixtures of 2,4-pentanedionato complexes, M(acac)n, M = Fe, Co; n = 2, 3. The XRD results showed that phase pure CoFe2O4 samples were prepared with a molar content of Co:Fe from 1:1.3 to 1:2.0. Addition of variable amounts of water was found to facilitate the decomposition of precursor complexes. That allowed control of the organics content and the BET surface area of the oxide nanoparticles. Powders with specific surface area as high as 218 m2 g-1 were obtained. FE-SEM was used to examine particle shape, size, and size distribution with an estimated diameter of 20-30 nm. Variable temperature XRD also revealed the spinel crystallization on heating. A small particle size below 20 nm of the crystalline CoFe2O4 is retained up to 600 oC.
ER  -

OSTŘÍŽEK, Petr, Jiří PINKAS, Radek ZBOŘIL, Zdeněk MORAVEC and Petr BEZDIČKA. Nanoscopic Cobalt Ferrite by Sonolysis of M(acac)3 Complexes. In \textit{11 th Meeting of the European Society of Sonochemistry}. 1st ed. Basancon, Francie: UTINAM Universite de Franche-Comte, 2008, p.~181-182. ISSN~1350-4177.

Detailed Information on Publication Record