Photocatalytic and electrochemical properties of single- and multi-layer sub-stoichiometric titanium oxide coatings prepared by atmospheric plasma spraying

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F16%3A00460907" target="_blank" >RIV/61389021:_____/16:00460907 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388980:_____/16:00460907 RIV/00216208:11320/16:10334209

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s40145-016-0181-5" target="_blank" >http://dx.doi.org/10.1007/s40145-016-0181-5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s40145-016-0181-5" target="_blank" >10.1007/s40145-016-0181-5</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Photocatalytic and electrochemical properties of single- and multi-layer sub-stoichiometric titanium oxide coatings prepared by atmospheric plasma spraying

Popis výsledku v původním jazyce

We studied the photocatalytic and electrochemical impedance properties of two differentnsub-stoichiometric titania powders deposited using plasma spraying. Two different commercialnpowders with markedly diverse mean size as well as size distribution were chosen. Thermal oxidationnof these as-received powders was carried out to restore the O/Ti ratio to be 2.0. By this way, another two kinds of feedstock powders were obtained. Total of four kinds of feedstock powders were used in the experiments. All powders were sprayed using identical plasma spraying parameters. For some spraying runs, carbon steel served as the substrate, and for others, the previously sprayed titania coating from a different kind of feedstock. Combinations of single- and double-layer coatings were studied. Porosity, microstructure, phase composition, chemical composition, band gap based on reflectance measurement, and photocatalytic activity were examined. Electrochemical impedance spectroscopy demonstrated substantial differences between samples sprayed from the fine and coarse powders. Coatings from oxidized powders were slightly more photocatalytic. High spraying distance used for several of them was good for obtaining low band gap, whereas surface roughness and phase composition were not substantially different compared to standard spraying distance coatings.

Název v anglickém jazyce

Photocatalytic and electrochemical properties of single- and multi-layer sub-stoichiometric titanium oxide coatings prepared by atmospheric plasma spraying

Popis výsledku anglicky

We studied the photocatalytic and electrochemical impedance properties of two differentnsub-stoichiometric titania powders deposited using plasma spraying. Two different commercialnpowders with markedly diverse mean size as well as size distribution were chosen. Thermal oxidationnof these as-received powders was carried out to restore the O/Ti ratio to be 2.0. By this way, another two kinds of feedstock powders were obtained. Total of four kinds of feedstock powders were used in the experiments. All powders were sprayed using identical plasma spraying parameters. For some spraying runs, carbon steel served as the substrate, and for others, the previously sprayed titania coating from a different kind of feedstock. Combinations of single- and double-layer coatings were studied. Porosity, microstructure, phase composition, chemical composition, band gap based on reflectance measurement, and photocatalytic activity were examined. Electrochemical impedance spectroscopy demonstrated substantial differences between samples sprayed from the fine and coarse powders. Coatings from oxidized powders were slightly more photocatalytic. High spraying distance used for several of them was good for obtaining low band gap, whereas surface roughness and phase composition were not substantially different compared to standard spraying distance coatings.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JH - Keramika, žáruvzdorné materiály a skla

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Journal of Advanced Ceramics

ISSN

2226-4108

e-ISSN

—

Svazek periodika

5

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

CN - Čínská lidová republika

Počet stran výsledku

11

Strana od-do

126-136

Kód UT WoS článku

000377871300004

EID výsledku v databázi Scopus

2-s2.0-84976407252