One-pot plasma electrolytic oxidation synthesis of TiO2/Sb2O3 coatings for photocatalysis

•PEO coatings are formed on titanium in Sb2O3particles containing electrolytes.•PEO coatings are composed of anatase phase of TiO2.•Concentration of Sb2O3 particles is an important factor affecting photocatalytic activity.•Coating formed with 0.75 g/LSb2O3 electrolyte showed the best photocatalytic...

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Bibliographic Details
Published inMaterials letters Vol. 309; p. 131404
Main Authors Stojadinović, Stevan, Radić, Nenad, Vasilić, Rastko, Tadić, Nenad
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 15.02.2022
Elsevier BV
Subjects
Anatase
Antimony trioxide
Catalytic activity
Coatings
Dyes
Electrolytes
Materials science
Oxidation
PEO
Photocatalysis
Photodegradation
Sodium phosphate
TiO2
TiO2/Sb2O3
Titanium dioxide
TiO2/Sb2O3
PEO
Photocatalysis
TiO2
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Summary:•PEO coatings are formed on titanium in Sb2O3particles containing electrolytes.•PEO coatings are composed of anatase phase of TiO2.•Concentration of Sb2O3 particles is an important factor affecting photocatalytic activity.•Coating formed with 0.75 g/LSb2O3 electrolyte showed the best photocatalytic activity. Anatase TiO2 coatings modified by Sb2O3 particles were formed by plasma electrolytic oxidation of titanium in 10 g/L Na3PO4⋅10H2O with addition of Sb2O3 particles. The photodegradation of methyl orange under simulated sunlight was used to probe the photocatalytic potential of TiO2/Sb2O3 coatings. The photocatalytic activity (PA) of obtained coatings is higher than pure TiO2 for adding up to 2.0 g/L of Sb2O3 particles to electrolyte. The highest PA was observed for coatings formed in electrolyte with the addition of 0.75 g/L Sb2O3. Increased PA is related to a decrease of photogenerated electron/hole recombination rate as a result of TiO2 and Sb2O3 coupling.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2021.131404