Synthesis and characterization of the titanium doped nanostructural V2O5

Kryukova, G. N.; Зенковец, Г. А.; Pfänder, Norbert; Su, Dang Sheng; Schlögl, Robert

doi:10.1016/s0921-5093(02)00372-6

Cited by 24 publications

(7 citation statements)

References 14 publications

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“…For example, Ti-doped V 2 O 5 oxide prepared via spray-drying followed by calcination of the mixture of vanadyl oxalate solution with anatase, has unusual stability against electron beam irradiation, which is likely to stem from the modification of the V 2 O 5 structure with titanium atoms [4]. Doping of MgO with Li + ions can improve the catalytic activity and selectivity for application in oxidative dehydrogenation and cracking of propane [5].…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of Ti-doped MgO nanopowders by a modified coprecipitation method

Wang

Qiao

Chen

et al. 2008

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Preparation and characterization of Ti-doped MgO nanopowders by a modified coprecipitation method

Wang

Qiao

Chen

et al. 2008

Journal of Alloys and Compounds

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“…Among all the aforesaid oxides, VO 2 and V 2 O 5 are extensively investigated owing to the passion of positive phase transition temperatures. The tuning of transition temperature of vanadium oxide is usually achieved by doping/adding second phase with other transition metals e.g., both higher and lower valent metals such as Mo14151617181920212223242526, W27, Mn15, Ti2829, Nb2630, Cr30 and noble metal i.e., Au31 as well. After doping/adding second phase, the transition temperature of vanadium oxide is reported to be decreased141517181920242531.…”

mentioning

confidence: 99%

Nanocolumnar Crystalline Vanadium Oxide-Molybdenum Oxide Antireflective Smart Thin Films with Superior Nanomechanical Properties

Dey

Nayak

Akinlabi

et al. 2016

Sci Rep

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Vanadium oxide-molybdenum oxide (VO-MO) thin (21-475 nm) films were grown on quartz and silicon substrates by pulsed RF magnetron sputtering technique by altering the RF power from 100 to 600 W. Crystalline VO-MO thin films showed the mixed phases of vanadium oxides e.g., V 2 O 5 , V 2 O 3 and VO 2 along with MoO 3 . Reversible or smart transition was found to occur just above the room temperature i.e., at ~45-50 °C. The VO-MO films deposited on quartz showed a gradual decrease in transmittance with increase in film thickness. But, the VO-MO films on silicon exhibited reflectance that was significantly lower than that of the substrate. Further, the effect of low temperature (i.e., 100 °C) vacuum (10 −5 mbar) annealing on optical properties e.g., solar absorptance, transmittance and reflectance as well as the optical constants e.g., optical band gap, refractive index and extinction coefficient were studied. Sheet resistance, oxidation state and nanomechanical properties e.g., nanohardness and elastic modulus of the VO-MO thin films were also investigated in as-deposited condition as well as after the vacuum annealing treatment. Finally, the combination of the nanoindentation technique and the finite element modeling (FEM) was employed to investigate yield stress and von Mises stress distribution of the VO-MO thin films.Vanadium oxides based films and coatings are extensively studied due to both thermochromic 14,15,[17][18][19][20]24,25,31 . The Mo and/or molybdenum oxide doped vanadium oxides are reported to be grown by a multitude of techniques such as magnetron sputtering technique 15 , atmospheric pressure chemical vapour deposition 26 , cathodic

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“…An example of such coating, vanadium pentoxide, V2O5, does not form continuous brittle diffusion layers in contact with graphite (inert to graphite) [21]. Having a layered structure and consisting of square pyramids (Figure 2), held together by weak bonds, V2O5 is one of the most suitable materials for an intermediate layer [22,23]. At temperatures up to 67 °С, vanadium pentoxide is a semiconductor with monoclinic crystal lattice symmetry and a band gap of about 0.7 eV.…”

Section: Introductionmentioning

confidence: 99%

“…At temperatures up to 67 • C, vanadium pentoxide is a semiconductor with monoclinic crystal lattice symmetry and a band gap of about 0.7 eV. At a higher temperature, the compound acquires tetragonal symmetry and its conductivity increases by 2-3 orders of magnitude [22,23]. There are several methods for depositing VOx films, the main of which are reactive magnetron and ion-beam sputtering of a vanadium target in an oxygen-argon mixture, vacuum sputtering, and the solgel method.…”

Section: Introductionmentioning

confidence: 99%

Microplasma-Sprayed V2O5/C Double-Layer Coating for the Parts of Mini-Hydropower Systems

2020

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The development of novel designs for hydropower plants is of high interest nowadays. Studies have shown the negative effect of fluid flow on the turbines of mini-hydropower plants when using them in the conditions of the mountain river. To reduce the damage caused by cavitation, a microplasma coating technique has been chosen. Due to its wetting ability, low density, high thermal conductivity, high heat resistance and low chemical activity, graphite has been studied as a coating material. Vanadium pentoxide has been added as an interlayer to increase the wear resistance, corrosion resistance, and adhesion of the system. The microstructure of the system was studied using scanning electron microscopy and transmission electron microscopy. Functional properties of the system were tested by microhardness tests, wear resistance tests (friction), corrosion tests, and pull-off tests. The surface of the coating was homogeneous without warping, swelling and cracking. The microstructure consisted of regular structures in the form of branches of dendrites. V2O5/C coating resulted in the increase in microhardness up to 2534 MPa. The wear resistance (volume loss) of the sample with double-layer coating was 0.14 mm3 and the maximum adhesion strength was 17.5 MPa. Thus, the double-layer microplasma V2O5/C coating was applied and studied for strengthening the blades of mini-HPP. The microplasma method can find application in modifying the surface of power equipment subjected to the cavitation effect of the river water.

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Synthesis and characterization of the titanium doped nanostructural V2O5

Cited by 24 publications

References 14 publications

Preparation and characterization of Ti-doped MgO nanopowders by a modified coprecipitation method

Preparation and characterization of Ti-doped MgO nanopowders by a modified coprecipitation method

Nanocolumnar Crystalline Vanadium Oxide-Molybdenum Oxide Antireflective Smart Thin Films with Superior Nanomechanical Properties

Microplasma-Sprayed V2O5/C Double-Layer Coating for the Parts of Mini-Hydropower Systems

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