Enhanced photocatalytic degradation of Bisphenol A induced by densely packed nanocavities inside 2D TiO2 nanosheets

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Enhanced photocatalytic degradation of Bisphenol A induced by densely packed nanocavities inside 2D TiO2 nanosheets

Popis výsledku v původním jazyce

Here we present for the first time, the advantages offered by the cryo-lyophilisation technique (CLT) for synthesis of aligned 2D TiO2 nanosheets. The rnethod relies on lyophilzation of mixture of TiOSO4 andH2O2,leading to the fomration of arnorphous TiO(O)rOHr. This precursor was annealed at 500, 600, 800 and 950 oC in air and four as-obtained samples (TiO_LYO/500-TiO_LYO/950) were characterized b5&apos; XRD, SEM, HRTEM and SAXS techniques. The photocatalytic activity was measured by degradation of BisphenolA (BPA). XRD revealed that increasing of the temperature causing a transformation of TiO(O)rOH, to nailocrystalline TiOt anatase, SEM and HRTEM documented dense regular polyhedral nanocavitiesinside ultrafine TiO, nanosheets. The SAXS confirmed nanocavities of less than 50 nm stze lraving a main diameter of 2.6 nm. The activity increased with increasing the temperature in ordel TiO-LYO &lt; 500 oC &lt; 600 oC &lt; Degussa P25 &lt; 800. Sample annealed at 950 oC is mixtureof anatase and rutile; it is the second best photocatalyst after TiO_LYO/800. Since the efficiencyof TiO-LYO/S00 is higher than standard P25, we can conclude that CLT could be used as a smalt and nonstandard concept for synthesis ofadvanced photocatalysts.

Název v anglickém jazyce

Enhanced photocatalytic degradation of Bisphenol A induced by densely packed nanocavities inside 2D TiO2 nanosheets

Popis výsledku anglicky

Here we present for the first time, the advantages offered by the cryo-lyophilisation technique (CLT) for synthesis of aligned 2D TiO2 nanosheets. The rnethod relies on lyophilzation of mixture of TiOSO4 andH2O2,leading to the fomration of arnorphous TiO(O)rOHr. This precursor was annealed at 500, 600, 800 and 950 oC in air and four as-obtained samples (TiO_LYO/500-TiO_LYO/950) were characterized b5&apos; XRD, SEM, HRTEM and SAXS techniques. The photocatalytic activity was measured by degradation of BisphenolA (BPA). XRD revealed that increasing of the temperature causing a transformation of TiO(O)rOH, to nailocrystalline TiOt anatase, SEM and HRTEM documented dense regular polyhedral nanocavitiesinside ultrafine TiO, nanosheets. The SAXS confirmed nanocavities of less than 50 nm stze lraving a main diameter of 2.6 nm. The activity increased with increasing the temperature in ordel TiO-LYO &lt; 500 oC &lt; 600 oC &lt; Degussa P25 &lt; 800. Sample annealed at 950 oC is mixtureof anatase and rutile; it is the second best photocatalyst after TiO_LYO/800. Since the efficiencyof TiO-LYO/S00 is higher than standard P25, we can conclude that CLT could be used as a smalt and nonstandard concept for synthesis ofadvanced photocatalysts.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

21001 - Nano-materials (production and properties)

Projekt

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Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2018

Kód důvěrnosti údajů

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

Název statě ve sborníku

13th International Conference on SOLID STATE CHEMISTRY

ISBN

978-80-7560-158-2

ISSN

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e-ISSN

neuvedeno

Počet stran výsledku

1

Strana od-do

145

Název nakladatele

Czech Society of Industrial Chemistry

Místo vydání

Pardubice

Místo konání akce

Pardubice

Datum konání akce

16. 9. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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