Low-Temperature Mineralisation of Titania-Siloxane Composite
Layers

J 2021

Low-Temperature Mineralisation of Titania-Siloxane Composite Layers

SVOBODA, Tomáš; Michal VESELÝ; Radim BARTOŠ; Tomáš HOMOLA; Petr DZIK et al.

Základní údaje

Originální název

Low-Temperature Mineralisation of Titania-Siloxane Composite Layers

Autoři

SVOBODA, Tomáš; Michal VESELÝ; Radim BARTOŠ; Tomáš HOMOLA a Petr DZIK

Vydání

Catalysts, Basel, MDPI, 2021, 2073-4344

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10305 Fluids and plasma physics

Stát vydavatele

Švýcarsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 4.501

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/21:00118819

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

titanium oxide; methyltriethoxysilane; siloxane; plasma treatment; UV treatment; AO7

Štítky

14312030, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 11. 2. 2021 14:20, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

This paper deals with low-temperature mineralisation of coatings made with titania-siloxane compositions (TSC). Methyltriethoxysilane has been adopted as the precursor for the siloxane, and during its synthesis, an oligomeric siloxane condensate with methyl moieties acting as TiO2 binder has been produced. These methyl moieties, contained in TSC, provide solubility and prevent gelling, but reduce the hydrophilicity of the system, reduce the transfer of electrons and holes generated in the TiO2. In order to avoid these unfavourable effects, TSC mineralisation can be achieved by nonthermal treatment, for example, by using UV-radiation or plasma treatment. Characterisation of the siloxane was performed by gel permeation chromatography (GPC), which showed the size of the siloxane chain. Thermogravimetric analysis revealed a temperature at which the siloxane mineralises to SiO2. Printed layers of two types of TSC with different siloxane contents were studied by a scanning electron microscope (SEM), where a difference in the porosity of the samples was observed. TSC on fluorine-doped tin oxide (FTO) coated glass and microscopic glass were treated with non-thermal UV and plasma methods. TSC on FTO glass were tested by voltammetric measurements, which showed that the non-thermally treated layers have better properties and the amount of siloxane in the TSC has a great influence on their efficiency. Samples on microscopic glass were subjected to a photocatalytic decomposition test of the model pollutant Acid orange 7 (AO7). Non-thermally treated samples show higher photocatalytic activity than the raw sample.

Návaznosti

GJ19-14770Y, projekt VaV

Název: Plazmatem produkované nanostrukturované vrstvy pro flexibilní materiály nové generace

Investor: Grantová agentura ČR, Plasma engineering of nanostructured coatings for next-generation flexible materials

Citovat

SVOBODA, Tomáš; Michal VESELÝ; Radim BARTOŠ; Tomáš HOMOLA a Petr DZIK. Low-Temperature Mineralisation of Titania-Siloxane Composite Layers. Catalysts. Basel: MDPI, 2021, roč. 11, č. 1, s. 1-13. ISSN 2073-4344. Dostupné z: https://doi.org/10.3390/catal11010050.

@article{1727477,
   author = {Svoboda, Tomáš and Veselý, Michal and Bartoš, Radim and Homola, Tomáš and Dzik, Petr},
   article_location = {Basel},
   article_number = {1},
   doi = {https://doi.org/10.3390/catal11010050},
   keywords = {titanium oxide; methyltriethoxysilane; siloxane; plasma treatment; UV treatment; AO7},
   language = {eng},
   issn = {2073-4344},
   journal = {Catalysts},
   title = {Low-Temperature Mineralisation of Titania-Siloxane Composite Layers},
   url = {https://doi.org/10.3390/catal11010050},
   volume = {11},
   year = {2021}
}

TY  - JOUR
ID  - 1727477
AU  - Svoboda, Tomáš - Veselý, Michal - Bartoš, Radim - Homola, Tomáš - Dzik, Petr
PY  - 2021
TI  - Low-Temperature Mineralisation of Titania-Siloxane Composite Layers
JF  - Catalysts
VL  - 11
IS  - 1
SP  - 1-13
EP  - 1-13
PB  - MDPI
SN  - 20734344
KW  - titanium oxide
KW  - methyltriethoxysilane
KW  - siloxane
KW  - plasma treatment
KW  - UV treatment
KW  - AO7
UR  - https://doi.org/10.3390/catal11010050
L2  - https://doi.org/10.3390/catal11010050
N2  - This paper deals with low-temperature mineralisation of coatings made with titania-siloxane compositions (TSC). Methyltriethoxysilane has been adopted as the precursor for the siloxane, and during its synthesis, an oligomeric siloxane condensate with methyl moieties acting as TiO2 binder has been produced. These methyl moieties, contained in TSC, provide solubility and prevent gelling, but reduce the hydrophilicity of the system, reduce the transfer of electrons and holes generated in the TiO2. In order to avoid these unfavourable effects, TSC mineralisation can be achieved by nonthermal treatment, for example, by using UV-radiation or plasma treatment. Characterisation of the siloxane was performed by gel permeation chromatography (GPC), which showed the size of the siloxane chain. Thermogravimetric analysis revealed a temperature at which the siloxane mineralises to SiO2. Printed layers of two types of TSC with different siloxane contents were studied by a scanning electron microscope (SEM), where a difference in the porosity of the samples was observed. TSC on fluorine-doped tin oxide (FTO) coated glass and microscopic glass were treated with non-thermal UV and plasma methods. TSC on FTO glass were tested by voltammetric measurements, which showed that the non-thermally treated layers have better properties and the amount of siloxane in the TSC has a great influence on their efficiency. Samples on microscopic glass were subjected to a photocatalytic decomposition test of the model pollutant Acid orange 7 (AO7). Non-thermally treated samples show higher photocatalytic activity than the raw sample.
ER  -

SVOBODA, Tomáš; Michal VESELÝ; Radim BARTOŠ; Tomáš HOMOLA a Petr DZIK. Low-Temperature Mineralisation of Titania-Siloxane Composite Layers. \textit{Catalysts}. Basel: MDPI, 2021, roč.~11, č.~1, s.~1-13. ISSN~2073-4344. Dostupné z: https://doi.org/10.3390/catal11010050.

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