Single-crystal Raman and infrared spectra of vanadium(V) oxide

Gilson, T. R.; Bizri, O. F.; Cheetham, Norman W.H.

doi:10.1039/dt9730000291

Cited by 114 publications

(54 citation statements)

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“…The peaks at 2950 -2850 cm −1 and 1048 cm −1 are the characteristic C-H stretches, which will facilitate the linkage of catalytic species or polymers to the surface in its potential applications [38,[42][43][44]. The peak at 980 cm −1 corresponds to the symmetric stretching of the ν s (V 3+ =O) bond [45], in agreement with the XRD observation. Besides, the absorptions at 3440, 1632 and 1384 cm −1 are due to water and nitrate adsorbed on the KBr and can be disregarded [46].…”

Section: Resultssupporting

confidence: 73%

Synthesis of V2O3/C composites with different morphologies by a facile route and phase transition properties of the compounds

Zhang

Wang

Huang

et al. 2014

Materials Science-Poland

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V 2 O 3 and amorphous carbon composites (V 2 O 3 /C composites) with different morphologies (e.g. nanospheres, nanorods and nanosheets) were, for the first time, successfully synthesized by a facile hydrothermal route and subsequent calcination. The as-obtained samples were characterized by X-ray powder diffraction (XRD), energy dispersive spectrometery (EDS), elemental analysis (EA), Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The morphology of V 2 O 3 /C composites could be easily controlled by varying the reaction time, and, as a result, V 2 O 3 /C composites with nanospheres, nanorods and nanosheets were selectively synthesized. Furthermore, the phase transition property of V 2 O 3 /C composites was measured by differential scanning calorimetry (DSC), suggesting that V 2 O 3 /C composites exhibit the phase transition similar to V 2 O 3 , which could expand the potential applications of materials related to V 2 O 3 in the future.

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Section: Resultssupporting

confidence: 73%

Synthesis of V2O3/C composites with different morphologies by a facile route and phase transition properties of the compounds

Zhang

Wang

Huang

et al. 2014

Materials Science-Poland

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“…However, the V 4+ ions may also form VO 2+ complexes and act as modifiers [12]. Since vanadium can exists in two oxidation states, viz V 5+ (non magnetic) and V 4+ (a paramagnetic 3d 1 ion), in the ESR spectra of the present glass matrices an increase in the intensity of signal up to 0.3 mol % can be attributed to the predominant presence of V 4+ ions that take modifier positions in the glass network.…”

Section: Discussionmentioning

confidence: 80%

Dielectric dispersion and spectroscopic properties of NaF-SrO-B₂O₃glasses doped with V₂O₅

Babu

Krishna

Rao

et al. 2009

IOP Conf. Ser.: Mater. Sci. Eng.

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30 NaF-10 SrO -(60-x) B 2 O 3 : x V 2 O 5 (with x ranging from 0 to 0.5 mol %) glasses are prepared. Dielectric studies such as dielectric constant , loss tan , conductivity ac etc in the frequency range 1 kHz to 500 kHz (at 4 spot frequencies) in the temperature range 30 to 300 o C and spectroscopic properties like IR & ESR etc. were carried out on these samples. The observations on these glasses show that when V 2 O 5 is present in the lower concentration i.e. 0.3 mol % the vanadium ions exist in VO 2+ state that take modifier positions and weaken the glass network; beyond this concentration part of the vanadium ions exist in V 5+ state that take network forming positions and strengthen the structure of the glass matrix.

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“…The hollow microspheres were constructed from nanoparticles to form rough surfaces and enormous cavities, which would provide promising applications of the material in Li-ion intercalation and extraction [3]. is the characteristic structure of the layered orthorhombic V 2 O 5 [35]. The absorption band at 840 cm −1 is assigned to the vibration of O-(V) 3 .…”

Section: Electrochemical Characterizationmentioning

confidence: 99%

Synthesis and characterization of hollow V₂O₅ microspheres for supercapacitor electrode with pseudocapacitance

Zhang

2017

Materials Science-Poland

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Hollow V 2 O 5 microspheres (HVOM) were fabricated using NH 4 VO 3 , ethylene glycol and carbon spheres as the starting materials by a template solvothermal approach and subsequent calcination. The morphology and composition were characterized by field emission scanning electron microscopy (FE-SEM), X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and Brunauer-Emmet-Teller (BET). The results showed that the obtained HVOM were constructed from nanoparticles with rough surface. The electrochemical properties of HVOM as a supercapacitor electrode were investigated by cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD). HVOM displayed excellent pseudocapacitance property and their specific capacitances were 488 F·g −1 , 455 F·g −1 , 434 F·g −1 and 396 F·g −1 at the current density of 0.5 A·g −1 , 1 A·g −1 , 2 A·g −1 and 5 A·g −1 , respectively. They also exhibited an excellent energy density of 8.784 × 10 5 J·kg −1 at a power density of 900 W·kg −1 . The good electrochemical properties of the as-synthesized HVOM make them a promising candidate as a cathode material for supercapacitors.

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Single-crystal Raman and infrared spectra of vanadium(V) oxide

Cited by 114 publications

References 0 publications

Synthesis of V2O3/C composites with different morphologies by a facile route and phase transition properties of the compounds

Synthesis of V2O3/C composites with different morphologies by a facile route and phase transition properties of the compounds

Dielectric dispersion and spectroscopic properties of NaF-SrO-B₂O₃glasses doped with V₂O₅

Synthesis and characterization of hollow V₂O₅ microspheres for supercapacitor electrode with pseudocapacitance

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Single-crystal Raman and infrared spectra of vanadium(V) oxide

Cited by 114 publications

References 0 publications

Synthesis of V2O3/C composites with different morphologies by a facile route and phase transition properties of the compounds

Synthesis of V2O3/C composites with different morphologies by a facile route and phase transition properties of the compounds

Dielectric dispersion and spectroscopic properties of NaF-SrO-B2O3glasses doped with V2O5

Synthesis and characterization of hollow V2O5 microspheres for supercapacitor electrode with pseudocapacitance

Contact Info

Product

Resources

About

Dielectric dispersion and spectroscopic properties of NaF-SrO-B₂O₃glasses doped with V₂O₅

Synthesis and characterization of hollow V₂O₅ microspheres for supercapacitor electrode with pseudocapacitance