Nanocomposites of monodisperse nanoparticles embedded in high-K oxide matrices ? a general preparation strategy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00427372" target="_blank" >RIV/68378271:_____/14:00427372 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388980:_____/14:00427372

Výsledek na webu

<a href="http://dx.doi.org/10.1039/c3ra44840a" target="_blank" >http://dx.doi.org/10.1039/c3ra44840a</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c3ra44840a" target="_blank" >10.1039/c3ra44840a</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Nanocomposites of monodisperse nanoparticles embedded in high-K oxide matrices ? a general preparation strategy

Popis výsledku v původním jazyce

We present a general approach, which enables preparation of multifunctional nanocomposites of monodisperse nanoparticles embedded in oxide matrices. The two-step route has been successfully applied to nanocomposites composed of CoFe2O4 nanoparticles embedded in high-K oxide matrices (ZrO2, Al2O3, TiO2). First, hydrophobic CoFe2O4 nanoparticles were produced by hydrothermal synthesis and then their incorporation in the oxide matrix was completed by the sol?gel method using the corresponding alcoxides. The as-prepared samples were annealed at temperatures ranging from 200 to 700 °C and characterized in detail by several methods. The particle size does not change with the annealing temperature, while the amorphous matrices crystallize at temperatures above 400 °C. At higher annealing temperatures, partial decomposition of the CoFe2O4 occurs. The proposed method allows preparation of nanocomposites constituted of uniform nanoparticles embedded in the favored oxide matrix.

Název v anglickém jazyce

Nanocomposites of monodisperse nanoparticles embedded in high-K oxide matrices ? a general preparation strategy

Popis výsledku anglicky

We present a general approach, which enables preparation of multifunctional nanocomposites of monodisperse nanoparticles embedded in oxide matrices. The two-step route has been successfully applied to nanocomposites composed of CoFe2O4 nanoparticles embedded in high-K oxide matrices (ZrO2, Al2O3, TiO2). First, hydrophobic CoFe2O4 nanoparticles were produced by hydrothermal synthesis and then their incorporation in the oxide matrix was completed by the sol?gel method using the corresponding alcoxides. The as-prepared samples were annealed at temperatures ranging from 200 to 700 °C and characterized in detail by several methods. The particle size does not change with the annealing temperature, while the amorphous matrices crystallize at temperatures above 400 °C. At higher annealing temperatures, partial decomposition of the CoFe2O4 occurs. The proposed method allows preparation of nanocomposites constituted of uniform nanoparticles embedded in the favored oxide matrix.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

—

Projekt

<a href="/cs/project/GAP108%2F10%2F1250" target="_blank" >GAP108/10/1250: Multifunkční nanočástice: pokročilé metody přípravy a studium jejich fyzikálních vlastností</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

RSC Advances

ISSN

2046-2069

e-ISSN

—

Svazek periodika

4

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

5113-5121

Kód UT WoS článku

000329254100047

EID výsledku v databázi Scopus

—