METHOD OF AEROSOL SYNTHESIS OF CORE-SHELL NANOPARTICLES AND REFINE CONDITIONS OF ITS APPLICABILITY

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F17%3A10237697" target="_blank" >RIV/61989100:27360/17:10237697 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27640/17:10237697 RIV/61989100:27710/17:10237697 RIV/61989100:27740/17:10237697

Výsledek na webu

<a href="https://www.nanocon.eu/files/uploads/01/NANOCON2016_conference_proceedings_content.pdf" target="_blank" >https://www.nanocon.eu/files/uploads/01/NANOCON2016_conference_proceedings_content.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

METHOD OF AEROSOL SYNTHESIS OF CORE-SHELL NANOPARTICLES AND REFINE CONDITIONS OF ITS APPLICABILITY

Popis výsledku v původním jazyce

In this work we generalized and specified aerosol synthesis method of core-shell nanoparticles. This synthesis method was used with success in our previous publication about preparation of photocatalytic core-shell SiZnS nanoparticles. Reaction of two precursors takes place on the surface of carrier nanoparticles and leads to formation of photoactive shell. Likewise, in other microemulsion methods, desired thickness of shell is achieved by limiting the extent of reaction. Unlike to the conventional microemulsion methods, both precursors are dissolved in a same solvent. In our method of application aerosol synthesis, the carrier particles are dispersed in aqueous solution of the first precursor with a suitable concentration. This dispersion, which contains dispersed particles, is converted into a form of aerosol microdroplets in ultrasonic nebulizer. After that the aerosol is injected by air flow on the surface of a vigorously stirred solution containing the second precursor, which is in excess. The reaction near surface of carrier particles is largely heterogeneous and the shell growth is limited by an amount of the first precursor located in the aerosol droplet. Desired coating thickness is achieved by setting the initial parameters such as size and concentration of carrier nanoparticles and concentration of the first precursor. This work follows our previous publication, generalizes aerosol synthesis technology of core-shell nanostructures and discusses its prediction formulas accuracy.

Název v anglickém jazyce

METHOD OF AEROSOL SYNTHESIS OF CORE-SHELL NANOPARTICLES AND REFINE CONDITIONS OF ITS APPLICABILITY

Popis výsledku anglicky

In this work we generalized and specified aerosol synthesis method of core-shell nanoparticles. This synthesis method was used with success in our previous publication about preparation of photocatalytic core-shell SiZnS nanoparticles. Reaction of two precursors takes place on the surface of carrier nanoparticles and leads to formation of photoactive shell. Likewise, in other microemulsion methods, desired thickness of shell is achieved by limiting the extent of reaction. Unlike to the conventional microemulsion methods, both precursors are dissolved in a same solvent. In our method of application aerosol synthesis, the carrier particles are dispersed in aqueous solution of the first precursor with a suitable concentration. This dispersion, which contains dispersed particles, is converted into a form of aerosol microdroplets in ultrasonic nebulizer. After that the aerosol is injected by air flow on the surface of a vigorously stirred solution containing the second precursor, which is in excess. The reaction near surface of carrier particles is largely heterogeneous and the shell growth is limited by an amount of the first precursor located in the aerosol droplet. Desired coating thickness is achieved by setting the initial parameters such as size and concentration of carrier nanoparticles and concentration of the first precursor. This work follows our previous publication, generalizes aerosol synthesis technology of core-shell nanostructures and discusses its prediction formulas accuracy.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

21001 - Nano-materials (production and properties)

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název statě ve sborníku

NANOCON 2016 : conference proceedings : October 19-21, 2016, Brno, Česko

ISBN

978-80-87294-71-0

ISSN

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e-ISSN

neuvedeno

Počet stran výsledku

6

Strana od-do

811-816

Název nakladatele

Tanger

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

19. 10. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000410656100141