Preparation and characterization of ultrafine alumina via sol–gel polymeric route

Preparation of dispersed aluminum hydroxide nanoparticles via non-aqueous route and surface modification

“…The strong bands at 1380, 1467, 2855 and 2947 cm À1 are attributed to the bending vibrations of the eCH 3 and eCH 2 groups [27]. The strong broad band in the 3000e3600 cm À1 range is assigned to the stretching vibration in the eOH group [23]. The FTIR analysis of the as-prepared precursor (curve A in Fig.…”

“…2), the bands at 661 and 906 cm À1 are related to the AleO stretching vibrations [23]. The strong bands at 1046 and 1092 cm À1 are related to the bending vibrations of the CeO bond [23]. The weak band at 1420 cm À1 is attributed to the bending vibrations of the CeOeH group in ethylene glycol [24].…”

“…In the FTIR spectrum of the asprepared aluminum hydroxide nanoparticles (curve A in Fig. 2), the bands at 661 and 906 cm À1 are related to the AleO stretching vibrations [23]. The strong bands at 1046 and 1092 cm À1 are related to the bending vibrations of the CeO bond [23].…”

Synthesis and characterization of Li4Ti5O12

“…It can be observed that there are three stages of mass loss before the mass of the material becomes constant from 600 up to 1000 • C where 1000 • C is the maximum operating temperature of the instrument. The mass loss from room temperature to 600 • C corresponds to the evaporation of water and decomposition of thermally unstable organic matter [38][39][40]. This result suggests that the precursor should be heated at a minimum temperature of 600 • C for a certain length of time in order to obtain the desired product.…”

Effect of sol–gel prepared nanoalumina reinforcement content on the corrosion resistances of Al 6061‐Al2O3 nanocomposite in 3.5% NaCl solution

“…Occurrence of simple hump without any noticeable peak in higher frequency region is attributed to the presence of negligent level of absorbed water molecule. Appearance of a well‐defined broad peak at 666.5 cm −1 is associated to Al–O bond stretching . Presence of Al–O bond confirmed the formation of alumina.…”