On the optical, structural, and morphological properties of ZrO2 and TiO2 dip-coated thin films supported on glass substrates

Electrochemical behaviour of ceramic yttria stabilized zirconia on carbon steel synthesized via sol–gel process

“…1(b)). Peaks below 610 cm −1 indicated M-O bond vibrations, which confirmed the proposed acetylacetonate structures [14,15]. The observed differences in wave number associated to functional groups could be attributed to the each precursor nature, which can influence their reactivity with acetylacetone as a function of their ionic radius.…”

“…According to Cueto et al [14], this denotes evident ring formation and coordination of the metal with acetylacetone carbonyl groups with resonant character. Furthermore, this behaviour was confirmed by peaks at 620-1260 cm −1 which corresponding to M O and C C C vibrations and gave important information about the formation of a bidentate species, a cycle with acetylacetone framework in coordination with the metal.…”

Characterization of ceramic sol–gel coatings as an alternative chemical conversion treatment on commercial carbon steel

“…At low temperatures for both ceramic compounds, the spectra recorded intensity absorption bands of the O-H stretching at 3400-3456 cm −1 , which disappeared at temperatures higher than 573 K. Signals ranging from 1193 to 1796 cm −1 show the formation of a bidentate complex with keto-enolic equilibrium behavior. According to Cueto et al [26], this denotes evident ring formation and coordination of the metal with acetylacetone carbonyl groups with resonant character.…”

“…An important difference observed in the spectra is that from 573 K, the peaks arising from the formation of a bidentate complex with keto-enolic equilibrium have almost missed. Peaks below 610 cm −1 indicated M-O bond vibrations [26,27]. Based on existing information on alkoxide-stabilizing complex formation, these compounds are regarded as metal acetylacetonates with the formula (C 5 H 7 O 2 ) 3 Y for the yttrium complex and (C 5 H 7 O 2 ) 4 Zr for the zirconium complex.…”

Solvothermal synthesis of micron-sized spherical particles in TiO2–ZrO2 binary system

“…The bands of such propyl groups were hardly observed, on the other hand, for x ¼1.0. The bands at 1020, 1450, and 1530 cm À 1 detected in all the spectra are assigned to the bidentate acac ligands of metal ions [29][30][31], which indicates the presence of acac molecules that coordinate Ti 4 þ and/or Zr 4 þ . The bands of the bidentate ligands became smaller with increasing x.…”