The effect of type and concentration of modifier in supercritical carbon dioxide on crystallization of nanocrystalline titania thin films

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10388400" target="_blank" >RIV/00216208:11320/18:10388400 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985858:_____/18:00481564 RIV/61989100:27710/18:10239704

Výsledek na webu

<a href="https://doi.org/10.1016/j.supflu.2017.10.012" target="_blank" >https://doi.org/10.1016/j.supflu.2017.10.012</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.supflu.2017.10.012" target="_blank" >10.1016/j.supflu.2017.10.012</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The effect of type and concentration of modifier in supercritical carbon dioxide on crystallization of nanocrystalline titania thin films

Popis výsledku v původním jazyce

Nanostructured TiO2 anatase thin films were directly prepared using supercritical carbon dioxide (scCO(2)) modified by organic solvent and water in two step processing. Organic solvent used as scCO(2) modifier at 30 MPa and 40 degrees C in the first step of processing was in the second step changed to water with simultaneous temperature increase to 150 degrees C which caused anatase thin films crystallization. The effect of the type of modifier (water, methanol, ethanol and acetone), concentration of modifier (5-40 wt.%) in scCO(2) and the amount of scCO(2) (50-200 g) passed through the high pressure column as well as the type of substrate (soda-lime glass and monocrystalline Si) on microstructure and purity of TiO2 thin films were examined in both steps of processing. The prepared thin films were characterized with respect to their (micro)structural properties by Raman spectroscopy as well as X-ray diffraction, to their wettability by contact angle measurements and to their morphology by high resolution transmission electron microscopy.

Název v anglickém jazyce

The effect of type and concentration of modifier in supercritical carbon dioxide on crystallization of nanocrystalline titania thin films

Popis výsledku anglicky

Nanostructured TiO2 anatase thin films were directly prepared using supercritical carbon dioxide (scCO(2)) modified by organic solvent and water in two step processing. Organic solvent used as scCO(2) modifier at 30 MPa and 40 degrees C in the first step of processing was in the second step changed to water with simultaneous temperature increase to 150 degrees C which caused anatase thin films crystallization. The effect of the type of modifier (water, methanol, ethanol and acetone), concentration of modifier (5-40 wt.%) in scCO(2) and the amount of scCO(2) (50-200 g) passed through the high pressure column as well as the type of substrate (soda-lime glass and monocrystalline Si) on microstructure and purity of TiO2 thin films were examined in both steps of processing. The prepared thin films were characterized with respect to their (micro)structural properties by Raman spectroscopy as well as X-ray diffraction, to their wettability by contact angle measurements and to their morphology by high resolution transmission electron microscopy.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Projekt

<a href="/cs/project/GA14-23274S" target="_blank" >GA14-23274S: Nekonvenční příprava nanostrukturovaných oxidů kovů pomocí přetlakových a superkritických tekutin</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název periodika

Journal of Supercritical Fluids

ISSN

0896-8446

e-ISSN

—

Svazek periodika

133

Číslo periodika v rámci svazku

March

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

211-217

Kód UT WoS článku

000426234000026

EID výsledku v databázi Scopus

2-s2.0-85032872745