1997
DOI: 10.1016/s0254-0584(97)01940-8
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IR spectra of VO2 and V2O3

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Cited by 121 publications
(81 citation statements)
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“…8), shows the presence of monoclinic phase of VO 2 on vanadium metal. 21 The IR spectrum of sample V1 shows that all IR peaks are very less intense and the peak positioned particularly at 640 cm −1 corresponds to VO 2 phase is absent, which shows the presence of single orthorhombic phase with lesser oxidation. There are two additional peaks at 1625 and 1460 cm −1 in all samples, confirmed the presence of water molecules on the V surface corresponding to the bending mode of hydroxyl group (-OH).…”
Section: Raman and Ftir Analysismentioning
confidence: 93%
“…8), shows the presence of monoclinic phase of VO 2 on vanadium metal. 21 The IR spectrum of sample V1 shows that all IR peaks are very less intense and the peak positioned particularly at 640 cm −1 corresponds to VO 2 phase is absent, which shows the presence of single orthorhombic phase with lesser oxidation. There are two additional peaks at 1625 and 1460 cm −1 in all samples, confirmed the presence of water molecules on the V surface corresponding to the bending mode of hydroxyl group (-OH).…”
Section: Raman and Ftir Analysismentioning
confidence: 93%
“…The IR spectra of reduced V 2 O 5 also show a similar effect in the V=O stretching vibration due to the V IV species, the ionic radius of which is larger than V V . [17] In the case of the SZ and SY samples, it can be seen that the band around 1091 cm -1 is very broad compared with that in SiO 2 and this is due to the distortion of the Si-OSi bond brought about by the substitution. However, in the case of VSZ and VSY, a shift in this band to a slightly higher frequency can be observed.…”
Section: Resultsmentioning
confidence: 92%
“…The band at 1020 cm -1 corresponds to the unshared V=O stretching vibration and the bands located around 810, 472 and 364 cm -1 can be assigned to the vibrations of the bound oxygen which are shared by two vanadium atoms. [17,18] The IR spectrum of silica mainly shows three broad bands centred at 1091, 808 and 470 cm -1 which can be assigned to the Si-O stretching (antisymmetric stretching of the type ǟSi OǞ ǟSi), Si stretching (symmetric stretching mode of type ǟSi O SiǞ) and Si-O-Si bending of the characteristic groups, respectively. [19,20] Since the peak positions of both V 2 O 5 and SiO 2 are close, they overlap and hence IR bands due to V 2 O 5 cannot be seen in vanadia impregnated samples.…”
Section: Resultsmentioning
confidence: 99%
“…The observed absorption shoulder at 715 cm -1 and strong peak at 972 cm -1 are correspond to the VO 2 [45], The shoulder at 715cm -1 was not observe for higher temperature where p and p 0 are the equilibrium and saturation pressure of adsorbate at the temperature of adsorption, ѵ is the adsorbed gas quantity, v m is the monolayer adsorbed gas quantity and c is the BET constant. fig.…”
Section: Raman Spectroscopymentioning
confidence: 89%