A strategy for single-step elaboration of V2O5-grafted TiO2 nanostructured photocatalysts with evenly distributed pores

Bayati, M.R.; Molaei, R.; Moshfegh, A.Z.; Golestani‐Fard, F.

doi:10.1016/j.jallcom.2011.03.013

Cited by 19 publications

(7 citation statements)

References 36 publications

(44 reference statements)

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“…Insertion of vanadium compounds into the surface of PEO coating made it possible to perform a photocatalytic process by irradiation in the UV range and visible light as well [192][193][194]. Further work on the applications of higher mentioned electrolytes led to improve the photocatalytic properties of the obtained coatings doped by V 2 O 5 by the use of PEO process with pulsation in the range from 250 to 500 Hz and maximum voltage of 450 V [195]. In addition, it has been proved experimentally that the use just only aqueous solution of NaVO 3 allows for obtaining crystalline structures in the PEO coating, containing anatase, rutile, and V 2 O 5 at voltages in the range of 300-500 V.…”

Section: Peo Coatings Enriched With Phosphorus and Vanadium Or Tungstenmentioning

confidence: 99%

Phosphate Porous Coatings Enriched with Selected Elements via PEO Treatment on Titanium and Its Alloys: A Review

2020

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This paper shows that the subject of porous coatings fabrication by Plasma Electrolytic Oxidation (PEO), known also as Micro Arc Oxidation (MAO), is still current, inter alia because metals and alloys, which can be treated by the PEO method, for example, titanium, niobium, tantalum and their alloys, are increasingly available for sale. On the international market, apart from scientific works/activity developed at universities, scientific research on the PEO coatings is also underway in companies such as Keronite (Great Britain), Magoxid-Coat (Germany), Mofratech (France), Machaon (Russia), as well as CeraFuse, Tagnite, Microplasmic (USA). In addition, it should be noted that the development of the space industry and implantology will force the production of trouble-free micro- and macro-machines with very high durability. Another aspect in favor of this technique is the rate of part treatment, which does not exceed several dozen minutes, and usually only lasts a few minutes. Another advantage is functionalization of fabricated surface through thermal or hydrothermal modification of fabricated coatings, or other methods (Physical vapor deposition (PVD), chemical vapor deposition (CVD), sol-gel), including also reoxidation by PEO treatment in another electrolyte. In the following chapters, coatings obtained both in aqueous solutions and electrolytes based on orthophosphoric acid will be presented; therein, dependent on the PEO treatment and the electrolyte used, they are characterized by different properties associated with their subsequent use. The possibilities for using coatings produced by means of plasma electrolytic oxidation are very wide, beginning from various types of catalysts, gas sensors, to biocompatible and antibacterial coatings, as well as hard wear coatings used in machine parts, among others, used in the aviation and aerospace industries.

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Section: Peo Coatings Enriched With Phosphorus and Vanadium Or Tungstenmentioning

confidence: 99%

Phosphate Porous Coatings Enriched with Selected Elements via PEO Treatment on Titanium and Its Alloys: A Review

2020

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“…Photocatalytic properties are also inherent for the TiO 2 systems, which incorporated in their structure cerium oxides [19], vanadium oxides [20], tungsten oxides [21], and zirconium oxides [22]. They are effective for the destruction of organic compounds.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Application of oxide-metallic catalysts on valve metals for ecological catalysis

Karakurkchi

Сахненко

Ved

et al. 2017

EEJET

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“…ey are oxides of doped metals, differing in physical and chemical properties and affinity for oxygen [7,10]. e use of electrolytes of different compositions and varying conditions for titanium alloys PEO treatment allows obtaining coatings doped with transition [11,12], refractory [13,14], rare metals, and dispersed oxides [15,16]. So, the studies targeted at improvement of the techniques used for the formation of mixed-oxide coatings on titanium alloys are of great interest.…”

Section: Introductionmentioning

confidence: 99%

Effect of Doping Metals on the Structure of PEO Coatings on Titanium

Сахненко

Ved

Karakurkchi

2018

International Journal of Chemical Engineering

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e structure and properties of the oxide films formed on titanium alloys by means of plasma-electrolytic oxidizing in alkali electrolytes based on pyrophosphates, borates, or acetates of alkali metals with the addition of dopants' oxides or oxoanions of varying composition have been studied. Anodic polarization in the spark discharge (microarc) mode at application of interelectrode potential 90 to 160 V has been used to obtain mixed-oxide systems TiO x ·WO y , TiO x ·MoO y , TiO x ·ZrO 2 , and TiO x ·V 2 O 5 . e possibility to obtain the oxide layers containing the alloying elements by the modification of the composition of electrolytes has been stated. e chemical and phase composition as well as the topography, the microstructure, and the grain size of the formed layers depend on the applied current, interelectrode voltage, and the layer chemical composition. e effect of formed films composition on the resistance of titanium to corrosion has been discussed. Catalytic activity of mixed-oxide systems was determined in the model reaction of methyl orange dye MO photodestruction.

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A strategy for single-step elaboration of V2O5-grafted TiO2 nanostructured photocatalysts with evenly distributed pores

Cited by 19 publications

References 36 publications

Phosphate Porous Coatings Enriched with Selected Elements via PEO Treatment on Titanium and Its Alloys: A Review

Phosphate Porous Coatings Enriched with Selected Elements via PEO Treatment on Titanium and Its Alloys: A Review

Application of oxide-metallic catalysts on valve metals for ecological catalysis

Effect of Doping Metals on the Structure of PEO Coatings on Titanium

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