Plasma electrolytic oxidation layers as alternative supports for metallic catalysts used in oxidation reaction for environmental application

Samadi, Payman; Witońska, Izabela

doi:10.1016/j.catcom.2023.106722

Cited by 7 publications

(1 citation statement)

References 93 publications

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“…As a result of local high-energy influence, layers, including both matrix (metal to be oxidized) and electrolyte elements, are formed on the product surface. In comparison to other deposition techniques, PEO is a promising technique, which is capable of fabricating ceramic coatings with a controllable porous structure at a low cost and with simple and easy operation, high metallurgical bonding strength to the substrate, and the possibility of coating formation on complex-geometry or large-size substrates [22]. Durable and mechanically stable thin films can be synthesized and easily modified by the current-voltage parameters, temperature, and chemical composition of the electrolyte.…”

Section: Introductionmentioning

confidence: 99%

Shaping the Structure and Properties of TiO2-ZnO Oxide Coatings Produced by Plasma Electrolytic Oxidation on Titanium Substrate

Marny,

Sowa,

Kazek-Kęsik

et al. 2023

Materials

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The paper presents the results of preliminary research on the possibility of synthesizing ZnO-TiO2 mixed coatings by plasma electrochemical oxidation (PEO). The aim of the work was to synthesize TiO2-ZnO mixed coatings on a titanium substrate from an electrolyte containing ZnO nanoparticles (NPs) and to assess the parameters of PEO on the structure, chemical composition, and properties of the obtained oxide coatings. The PEO process was carried out under various current–voltage conditions using different signals: DC, DC pulse, and AC. In this work, optimal conditions for the PEO process were determined to obtain well-adhering oxide coatings with the highest possible content of ZnO. The structure and morphology of the resulting oxide coatings were investigated, and their chemical and phase composition was comprehensively examined (EDX, XRD, XPS, and GD-OES). In addition, their basic optical properties were assessed. It has been shown that in the PEO DC pulse process, it is possible to obtain oxide coatings characterized by a high degree of structure order, high ZnO content in the oxide coating (3.6 at.%, XPS), and prospective applications for photocatalytic purposes (3.12 eV).

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Section: Introductionmentioning

confidence: 99%