1999
DOI: 10.1016/s0040-6031(98)00580-2
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DSC and FT-IR analysis of the drying process of titanium alkoxide derived precipitates

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Cited by 58 publications
(36 citation statements)
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“…3 shows a broad band centred at 3,100 cm -1 that is typically due to the free O-H stretching [42] bonds, which result is in good agreement with both the second weight loss observed in TG-DTA analysis and the presence of amorphous phase evaluated by quantitative XRD analysis. The peak found at 1,630 cm -1 was attributed [42] to the presence of the adsorbed water as confirmed in TG curve by the weight loss at 100°C. Figure 4 reports the TEM image of the obtained titania particles.…”
Section: Resultssupporting
confidence: 83%
“…3 shows a broad band centred at 3,100 cm -1 that is typically due to the free O-H stretching [42] bonds, which result is in good agreement with both the second weight loss observed in TG-DTA analysis and the presence of amorphous phase evaluated by quantitative XRD analysis. The peak found at 1,630 cm -1 was attributed [42] to the presence of the adsorbed water as confirmed in TG curve by the weight loss at 100°C. Figure 4 reports the TEM image of the obtained titania particles.…”
Section: Resultssupporting
confidence: 83%
“…14,16 The bandwidth between 3700-2500 cm -1 centered at ~3100 cm -1 is due to the stretching vibration of the hydroxyl groups, which can be attributed to the adsorbed water, alcohols and Ti-OH species that were formed during the gelation. 15,[17][18][19] Vibration at 1625 cm -1 is due to OH bending vibration of adsorbed water and surface hydroxyl groups.…”
Section: Resultsmentioning
confidence: 99%
“…An argument for this hypothesis is a slight shift of this band from 3100 to 3200 cm -1 , with respect to the unchelated sample. Indeed, according to Velasco,16 the broadband between 3600 and 3000 cm -1 , corresponding to O-H vibrations, can be deconvoluted into several peaks corresponding to free or interstitial water, coordinatively bound water and rigidly bound water in the form of hydroxyls ions (Ti-OH groups), as well as the presence of OH groups from butanol. The band due to the O-H vibrations of Ti-OH groups is located at 3545 cm -1 , while bands due to the retained H2O and butanol produced by Tnb hydrolysis are at 3266 cm -1 .…”
Section: Resultsmentioning
confidence: 99%
“…The intense broad band observed at 1382 cm -1 corresponds to stretching modes of NO 3 -. The peaks around 1155 cm -1 and 1037 cm -1 are indicatives of the presence of residual species of urea and non-hydrolyzed groups of TBT [29].…”
Section: Diffuse Reflectancementioning
confidence: 99%