Composition, structure, and photocatalytic properties of Fe-containing oxide layers on titanium

Vasilyeva, M. S.; Руднев, В. С.; Сергеев, А. А.; Сергеева, К. А.; Nepomnyaschiy, Aleksandr; Ustinov, A. Yu.; Zvereva, A. A.; Kilin, K. N.; Voznesenskiy, S. S.

doi:10.1134/s2070205117050252

Cited by 6 publications

(3 citation statements)

References 41 publications

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“…[ 1–8 ] Out of all techniques for the growth of thin films for photoelectrodes preparation, [ 9–11 ] Plasma Electrolytic Oxidation (PEO) allows to easily synthesize photoactive TiO 2 layers with tuned crystalline phase composition [ 12–14 ] and dosage of doping elements. [ 15–21 ]…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4][5][6][7][8] Out of all techniques for the growth of thin films for photoelectrodes preparation, [9][10][11] Plasma Electrolytic Oxidation (PEO) allows to easily synthesize photoactive TiO 2 layers with tuned crystalline phase composition [12][13][14] and dosage of doping elements. [15][16][17][18][19][20][21] PEO, also referred to as micro-arc oxidation or micro-plasma oxidation or spark anodization, is a plasma-assisted conversion temperature from 25 to 0 °C during the PEO treatment and by tuning the cell voltage, the incident photon-to-current efficiency (IPCE) under UV-C irradiation (254 nm) of the obtained photoactive layers increased from 11% to 82%. [12] The aim of the present work is the validation of PEO as a valuable technique to produce TiO 2 photoanodes for photocatalytic water splitting.…”

Section: Introductionmentioning

confidence: 99%

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Single‐Step Preparation of Large Area TiO₂ Photoelectrodes for Water Splitting

Schäfers

Arab

Chiarello

et al. 2020

Advanced Energy Materials

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The fast, single‐step and easily scalable production by plasma electrolytic oxidation (PEO) of large area TiO2 electrodes with excellent photoactivity in water splitting under simulated solar light is systematically investigated here. In particular, the effects that the cell voltage (100–180 V) and the processing time (0.5–15 min) have on the electrode properties are studied. The PEO‐produced oxide layers are porous, the predominant crystalline structure shifting from anatase, to an anatase‐rutile mixture, and finally to rutile by rising the cell voltage. The electrodes show a double‐layered structure, with a more compact layer at the interface with the titanium substrate and a thick porous layer on the external surface. The photocurrent density versus wavelength reflects the phase composition, with a maximum incident photon‐to‐current efficiency of 90% at 320 nm. The highest H2 production rate is attained with the mixed anatase‐rutile electrode prepared by 300 s‐long PEO at 150 V.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Single‐Step Preparation of Large Area TiO₂ Photoelectrodes for Water Splitting

Schäfers

Arab

Chiarello

et al. 2020

Advanced Energy Materials

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“…A similar effect of incorporation of iron cations to an oxide matrix/mold has been observed on the surface of PEO coatings obtained in an aqueous electrolyte containing Na 3 PO 4 •12H 2 O and FeSO 4 using current control (15 A/dm 2 ) in a two-minute PEO process. The use of aqueous solutions of Na 3 SiO 3 and Na 3 PO 4 enriched with K 3 [Fe(CN) 6 ] in a ten-minute PEO process (8 A/dm 2 ) allowed to obtain porous coatings (TiO 2 with Fe 2 O 3 ) characterized by better photocatalytic properties in the process of phenol degradation [169].…”

Section: Peo Coatings Enriched With Phosphorus Iron or Nickelmentioning

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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CeO2 doped Al2O3 composite ceramic coatings fabricated on γ–TiAl alloys via cathodic plasma electrolytic deposition

Wang

Xie

et al. 2019

Journal of Alloys and Compounds

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Composition, structure, and photocatalytic properties of Fe-containing oxide layers on titanium

Cited by 6 publications

References 41 publications

Single‐Step Preparation of Large Area TiO₂ Photoelectrodes for Water Splitting

Single‐Step Preparation of Large Area TiO₂ Photoelectrodes for Water Splitting

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

CeO2 doped Al2O3 composite ceramic coatings fabricated on γ–TiAl alloys via cathodic plasma electrolytic deposition

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Composition, structure, and photocatalytic properties of Fe-containing oxide layers on titanium

Cited by 6 publications

References 41 publications

Single‐Step Preparation of Large Area TiO2 Photoelectrodes for Water Splitting

Single‐Step Preparation of Large Area TiO2 Photoelectrodes for Water Splitting

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

CeO2 doped Al2O3 composite ceramic coatings fabricated on γ–TiAl alloys via cathodic plasma electrolytic deposition

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Single‐Step Preparation of Large Area TiO₂ Photoelectrodes for Water Splitting

Single‐Step Preparation of Large Area TiO₂ Photoelectrodes for Water Splitting