Enhanced Photocatalytic Activity in p-NiO Grafted n-TiO2 Porous Coatings

Bassaki, Samira; Niazi, Hamid; Golestani‐Fard, F.; Naghizadeh, R.; Bayati, R.

doi:10.1016/j.jmst.2014.10.006

Cited by 24 publications

(5 citation statements)

References 39 publications

(48 reference statements)

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“…Si 3 N 4 [50] and Al 2 O 3 [51] were added to electrolyte to enhance wear resistance of MAO coatings. Higher photoactivity was observed in TiO 2 -NiO [52] EEMAO coatings compared with pure TiO 2 coatings by MAO.…”

Section: Introductionmentioning

confidence: 90%

How deposition parameters affect corrosion behavior of TiO2-Al2O3 nanocomposite coatings

Niazi

Yari

Golestani‐Fard

et al. 2015

Applied Surface Science

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Section: Introductionmentioning

confidence: 90%

How deposition parameters affect corrosion behavior of TiO2-Al2O3 nanocomposite coatings

Niazi

Yari

Golestani‐Fard

et al. 2015

Applied Surface Science

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“…Therefore, we concluded that while nitrogen doping improves adsorption capability, the photodegradation is not significantly promoted by nitrogen doping. It was known that photodegradation of MB by TiO 2 is accomplished by a hydroxyl radical, which is generated by the reaction of water with the photogenerated hole in the valence band . Hence, surface nickel ion or NiO may play a role in preventing the recombination of photogenerated electrons and holes.…”

Section: Resultsmentioning

confidence: 99%

Photocatalytic Property of Nitrogen and Nickel Codoped Titanium Oxides

Kim

Jung

Hwang

et al. 2016

Bulletin Korean Chem Soc

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Nitrogen or nitrogen and nickel codoped TiO 2 s are prepared by a hydrothermal method. The doped TiO 2 s are applied to the photodecomposition of methylene blue (MB) under visible-light irradiation. The chemical and physical properties of catalysts are characterized by X-ray diffraction, transmission electron microscope, energy dispersive spectroscopy mapping, zeta potential, and Brunauer-Emmett-Teller. We found that nickel and nitrogen atoms are well dispersed in TiO 2 . While the adsorption of MB on the TiO 2 surface are improved by the nitrogen doping, the photodecomposition capability of MB is barely affected by the nitrogen doping level. Particularly, the photodegradation power of the nickel and nitrogen codoped TiO 2 is better than that of commercial TiO 2 (Degussa P25).

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“…The performed studies have shown that the coatings obtained at the voltage of 300 V in a five-minute PEO process are characterized by better photocatalytic activity in photodegradation reaction of 4-chlorophenol under UV irradiation than the coatings fabricated in electrolyte containing only dodecahydrate sodium phosphate(V) [170].…”

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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Enhanced Photocatalytic Activity in p-NiO Grafted n-TiO2 Porous Coatings

Cited by 24 publications

References 39 publications

How deposition parameters affect corrosion behavior of TiO2-Al2O3 nanocomposite coatings

How deposition parameters affect corrosion behavior of TiO2-Al2O3 nanocomposite coatings

Photocatalytic Property of Nitrogen and Nickel Codoped Titanium Oxides

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

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