In this paper, we employed plasma electrolytic oxidation (PEO) of aluminum in a water solution of sodium tungstate (Na2WO4 center dot 2H(2)O) with the addition of the pure and Ce-loaded zeolites clinoptilolite and 13 X for the preparation of oxide coatings. The obtained coatings were characterized with respect to their morphologies and chemical and phase compositions using scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy, atomic force microscopy, and X-ray diffraction. The prepared coatings contained gamma-alumina, WO3, and metallic tungsten. The surface morphologies of the obtained coatings strongly depended on the PEO processing time; the roughness of all coatings increased with PEO time, while porosity decreased with PEO processing time as a result of microdischarge coalescence and growth. All coatings contained elements originating from the substrate and from the electrolytes. Coatings containing zeolites with Ce showed higher photoactivity than those ...with immobilized pure zeolites. The highest photocatalytic activity levels were observed for coatings containing immobilized Ce-exchanged clinoptilolite processed for 10 min. It was observed that both clinoptilolite and 13X zeolites improved the features of the PEO coatings in a similar manner, making natural and abundant clinoptilolite an excellent candidate for various applications.
TY - JOUR
AU - Mojsilović, Kristina
AU - Lačnjevac, Uroš
AU - Stojanović, Srna
AU - Damjanovic-Vasilic, Ljiljana
AU - Stojadinović, Stevan
AU - Vasilic, Rastko
PY - 2021
UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/1495
AB - In this paper, we employed plasma electrolytic oxidation (PEO) of aluminum in a water solution of sodium tungstate (Na2WO4 center dot 2H(2)O) with the addition of the pure and Ce-loaded zeolites clinoptilolite and 13 X for the preparation of oxide coatings. The obtained coatings were characterized with respect to their morphologies and chemical and phase compositions using scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy, atomic force microscopy, and X-ray diffraction. The prepared coatings contained gamma-alumina, WO3, and metallic tungsten. The surface morphologies of the obtained coatings strongly depended on the PEO processing time; the roughness of all coatings increased with PEO time, while porosity decreased with PEO processing time as a result of microdischarge coalescence and growth. All coatings contained elements originating from the substrate and from the electrolytes. Coatings containing zeolites with Ce showed higher photoactivity than those with immobilized pure zeolites. The highest photocatalytic activity levels were observed for coatings containing immobilized Ce-exchanged clinoptilolite processed for 10 min. It was observed that both clinoptilolite and 13X zeolites improved the features of the PEO coatings in a similar manner, making natural and abundant clinoptilolite an excellent candidate for various applications.
PB - MDPI, Basel
T2 - Metals
T1 - Formation and Properties of Oxide Coatings with Immobilized Zeolites Obtained by Plasma Electrolytic Oxidation of Aluminum
IS - 8
VL - 11
DO - 10.3390/met11081241
ER -
@article{
author = "Mojsilović, Kristina and Lačnjevac, Uroš and Stojanović, Srna and Damjanovic-Vasilic, Ljiljana and Stojadinović, Stevan and Vasilic, Rastko",
year = "2021",
abstract = "In this paper, we employed plasma electrolytic oxidation (PEO) of aluminum in a water solution of sodium tungstate (Na2WO4 center dot 2H(2)O) with the addition of the pure and Ce-loaded zeolites clinoptilolite and 13 X for the preparation of oxide coatings. The obtained coatings were characterized with respect to their morphologies and chemical and phase compositions using scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy, atomic force microscopy, and X-ray diffraction. The prepared coatings contained gamma-alumina, WO3, and metallic tungsten. The surface morphologies of the obtained coatings strongly depended on the PEO processing time; the roughness of all coatings increased with PEO time, while porosity decreased with PEO processing time as a result of microdischarge coalescence and growth. All coatings contained elements originating from the substrate and from the electrolytes. Coatings containing zeolites with Ce showed higher photoactivity than those with immobilized pure zeolites. The highest photocatalytic activity levels were observed for coatings containing immobilized Ce-exchanged clinoptilolite processed for 10 min. It was observed that both clinoptilolite and 13X zeolites improved the features of the PEO coatings in a similar manner, making natural and abundant clinoptilolite an excellent candidate for various applications.",
publisher = "MDPI, Basel",
journal = "Metals",
title = "Formation and Properties of Oxide Coatings with Immobilized Zeolites Obtained by Plasma Electrolytic Oxidation of Aluminum",
number = "8",
volume = "11",
doi = "10.3390/met11081241"
}
Mojsilović, K., Lačnjevac, U., Stojanović, S., Damjanovic-Vasilic, L., Stojadinović, S.,& Vasilic, R.. (2021). Formation and Properties of Oxide Coatings with Immobilized Zeolites Obtained by Plasma Electrolytic Oxidation of Aluminum. in Metals
MDPI, Basel., 11(8).
https://doi.org/10.3390/met11081241
Mojsilović K, Lačnjevac U, Stojanović S, Damjanovic-Vasilic L, Stojadinović S, Vasilic R. Formation and Properties of Oxide Coatings with Immobilized Zeolites Obtained by Plasma Electrolytic Oxidation of Aluminum. in Metals. 2021;11(8).
doi:10.3390/met11081241 .
Mojsilović, Kristina, Lačnjevac, Uroš, Stojanović, Srna, Damjanovic-Vasilic, Ljiljana, Stojadinović, Stevan, Vasilic, Rastko, "Formation and Properties of Oxide Coatings with Immobilized Zeolites Obtained by Plasma Electrolytic Oxidation of Aluminum" in Metals, 11, no. 8 (2021),
https://doi.org/10.3390/met11081241 . .
