Cobalt-containing core-shell nanoparticles on the surface of poly(tetrafluoroethylene) microgranules
(2006) In Inorganic Materials 42(9). p.1012-1019- Abstract
Cobalt-containing nanoparticles have been prepared via thermal decomposition of cobalt acetate on the surface of poly(tetrafluoroethylene) (PTFE) microgranules forming a fluidized bed over the surface of hot mineral oil. Using transmission electron microscopy, the average size of the cobalt-containing nanoparticles has been determined to be 3.6 nm. The composition and structure of the nanoparticles have been determined by x-ray diffraction, extended x-ray absorption fine structure spectroscopy, and electron paramagnetic resonance, and the magnetic properties of the synthesized nanomaterial have been studied. The results indicate that the nanoparticles have a core-shell structure, with a metallic cobalt core (≲ 10 vol%) and a shell... (More)
Cobalt-containing nanoparticles have been prepared via thermal decomposition of cobalt acetate on the surface of poly(tetrafluoroethylene) (PTFE) microgranules forming a fluidized bed over the surface of hot mineral oil. Using transmission electron microscopy, the average size of the cobalt-containing nanoparticles has been determined to be 3.6 nm. The composition and structure of the nanoparticles have been determined by x-ray diffraction, extended x-ray absorption fine structure spectroscopy, and electron paramagnetic resonance, and the magnetic properties of the synthesized nanomaterial have been studied. The results indicate that the nanoparticles have a core-shell structure, with a metallic cobalt core (≲ 10 vol%) and a shell consisting of three phases: Co 3O 4 (≲ 80%) and small amounts of CoO and CoF 2 (≲ 10%). The fluoride phase results from the interaction of the nanoparticles with surface fluorine atoms of the PTFE microgranules.
(Less)
- author
- Yurkov, G. Yu
; Baranov, D. A.
LU
; Kozinkin, A. V. ; Koksharov, Yu A. ; Nedoseikina, T. I. ; Shvachko, O. V. ; Moksin, S. A. and Gubin, S. P.
- publishing date
- 2006-09
- type
- Contribution to journal
- publication status
- published
- in
- Inorganic Materials
- volume
- 42
- issue
- 9
- pages
- 8 pages
- publisher
- Pleiades Publishing
- external identifiers
-
- scopus:33749420946
- ISSN
- 0020-1685
- DOI
- 10.1134/S0020168506090159
- language
- English
- LU publication?
- no
- id
- 724b035f-de4c-4c51-8b15-89f6d85d3dfb
- date added to LUP
- 2023-01-20 21:24:54
- date last changed
- 2023-02-15 02:41:25
@article{724b035f-de4c-4c51-8b15-89f6d85d3dfb, abstract = {{<p>Cobalt-containing nanoparticles have been prepared via thermal decomposition of cobalt acetate on the surface of poly(tetrafluoroethylene) (PTFE) microgranules forming a fluidized bed over the surface of hot mineral oil. Using transmission electron microscopy, the average size of the cobalt-containing nanoparticles has been determined to be 3.6 nm. The composition and structure of the nanoparticles have been determined by x-ray diffraction, extended x-ray absorption fine structure spectroscopy, and electron paramagnetic resonance, and the magnetic properties of the synthesized nanomaterial have been studied. The results indicate that the nanoparticles have a core-shell structure, with a metallic cobalt core (≲ 10 vol%) and a shell consisting of three phases: Co <sub>3</sub>O <sub>4</sub> (≲ 80%) and small amounts of CoO and CoF <sub>2</sub> (≲ 10%). The fluoride phase results from the interaction of the nanoparticles with surface fluorine atoms of the PTFE microgranules.</p>}}, author = {{Yurkov, G. Yu and Baranov, D. A. and Kozinkin, A. V. and Koksharov, Yu A. and Nedoseikina, T. I. and Shvachko, O. V. and Moksin, S. A. and Gubin, S. P.}}, issn = {{0020-1685}}, language = {{eng}}, number = {{9}}, pages = {{1012--1019}}, publisher = {{Pleiades Publishing}}, series = {{Inorganic Materials}}, title = {{Cobalt-containing core-shell nanoparticles on the surface of poly(tetrafluoroethylene) microgranules}}, url = {{http://dx.doi.org/10.1134/S0020168506090159}}, doi = {{10.1134/S0020168506090159}}, volume = {{42}}, year = {{2006}}, }