Investigation of radiofrequency induced release kinetics from magnetic hollow silica microspheres

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F12%3A43893583" target="_blank" >RIV/60461373:22340/12:43893583 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.micromeso.2012.04.019" target="_blank" >http://dx.doi.org/10.1016/j.micromeso.2012.04.019</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.micromeso.2012.04.019" target="_blank" >10.1016/j.micromeso.2012.04.019</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Investigation of radiofrequency induced release kinetics from magnetic hollow silica microspheres

Popis výsledku v původním jazyce

Composite hollow silica microspheres containing embedded iron oxide nanoparticles for radiofrequency heating have been synthesised by a soft templating route. The influence of nanoparticle concentration on the microspheres size distribution, shell thickness, and heating rate was investigated. The structure of the hollow microspheres was characterised by SEM, confocal microscopy and BET analysis, and the temperature-dependence of release kinetics of a model substance (vitamin B12) from the microspheres was measured by time-resolved UV/Vis spectrophotometry. A mathematical model of the release process, based on simultaneous diffusion and adsorption/desorption of the solute in the mesoporous shell, has been developed and used to evaluate the dependence ofthe effective diffusivity in the mesoporous silica shell on temperature and preparation conditions.

Název v anglickém jazyce

Investigation of radiofrequency induced release kinetics from magnetic hollow silica microspheres

Popis výsledku anglicky

Composite hollow silica microspheres containing embedded iron oxide nanoparticles for radiofrequency heating have been synthesised by a soft templating route. The influence of nanoparticle concentration on the microspheres size distribution, shell thickness, and heating rate was investigated. The structure of the hollow microspheres was characterised by SEM, confocal microscopy and BET analysis, and the temperature-dependence of release kinetics of a model substance (vitamin B12) from the microspheres was measured by time-resolved UV/Vis spectrophotometry. A mathematical model of the release process, based on simultaneous diffusion and adsorption/desorption of the solute in the mesoporous shell, has been developed and used to evaluate the dependence ofthe effective diffusivity in the mesoporous silica shell on temperature and preparation conditions.

Druh

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

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

<a href="/cs/project/GD104%2F08%2FH055" target="_blank" >GD104/08/H055: Transportní a reakční procesy v komplexních vícefázových systémech</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Microporous and mesoporous materials

ISSN

1387-1811

e-ISSN

—

Svazek periodika

159

Číslo periodika v rámci svazku

neuveden

Stát vydavatele periodika

BE - Belgické království

Počet stran výsledku

7

Strana od-do

119-125

Kód UT WoS článku

000305917700018

EID výsledku v databázi Scopus

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