Titania aerogels with tailored nano and microstructure: comparison of lyophilization and supercritical drying

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F17%3AA1801M2J" target="_blank" >RIV/61988987:17310/17:A1801M2J - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388980:_____/17:00474951 RIV/67985858:_____/17:00474951

Výsledek na webu

<a href="http://dx.doi.org/10.1515/pac-2016-1031" target="_blank" >http://dx.doi.org/10.1515/pac-2016-1031</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1515/pac-2016-1031" target="_blank" >10.1515/pac-2016-1031</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Titania aerogels with tailored nano and microstructure: comparison of lyophilization and supercritical drying

Popis výsledku v původním jazyce

Structure and phase composition of titania aerogels can be substantially influenced simply bythe process of drying their parent water colloid suspensions prepared by the reaction of hydrogen peroxidewith suspension of precipitates obtained by neutralization of solution of titanyl sulfate with ammonia. Twomethods of drying are compared: (1) lyophilization of fast frozen material immersed in liquid nitrogen, and(2) critical point drying using supercritical CO2 under high pressure. Both methods of drying lead to yellowtitanium peroxide aerogels consisting of nanometer-sized blocks. While lyophilization leads to foils consistingof nano-sized crystalline nuclei of peroxo-polytitanic acid dispersed in predominantly amorphous material,the critical point drying provides rather bulk highly porous composite consisting of randomly orientedflat nanoparticles (5-10 nm) composed of crystalline anatase and amorphous peroxo-polytitanic acid.

Název v anglickém jazyce

Titania aerogels with tailored nano and microstructure: comparison of lyophilization and supercritical drying

Popis výsledku anglicky

Structure and phase composition of titania aerogels can be substantially influenced simply bythe process of drying their parent water colloid suspensions prepared by the reaction of hydrogen peroxidewith suspension of precipitates obtained by neutralization of solution of titanyl sulfate with ammonia. Twomethods of drying are compared: (1) lyophilization of fast frozen material immersed in liquid nitrogen, and(2) critical point drying using supercritical CO2 under high pressure. Both methods of drying lead to yellowtitanium peroxide aerogels consisting of nanometer-sized blocks. While lyophilization leads to foils consistingof nano-sized crystalline nuclei of peroxo-polytitanic acid dispersed in predominantly amorphous material,the critical point drying provides rather bulk highly porous composite consisting of randomly orientedflat nanoparticles (5-10 nm) composed of crystalline anatase and amorphous peroxo-polytitanic acid.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10402 - Inorganic and nuclear chemistry

Projekt

<a href="/cs/project/LM2015073" target="_blank" >LM2015073: Nanomateriály a nanotechnologie pro ochranu životního prostředí a udržitelnou budoucnost</a><br>

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

PURE APPL CHEM

ISSN

0033-4545

e-ISSN

1365-3075

Svazek periodika

89

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

9

Strana od-do

501-509

Kód UT WoS článku

000403319800011

EID výsledku v databázi Scopus

2-s2.0-85019397839