Preparation and optical properties of transparent zirconia sol–gel materials

DFT modeling, UV-Vis and IR spectroscopic study of acetylacetone-modified zirconia sol-gel materials

“…Zirconia is one of the most thoroughly investigated sol-gel systems due to the excellent properties of ZrO 2 material, which have led to its use in porous membranes, matrices in catalysis, and dense dielectric and ferroelectric films in electronics [1][2][3][4][5][6]. Recently, we synthesized hybrid zirconia sol-gel materials modified with acetylacetone (AcAc) [7], and demonstrated that modifying agents like AcAc and nitric acid decrease the optical band gap of the sol-gel zirconia from 4.84 eV to about 3 eV. Doping with AcAc leads to yellow-brown materials [7][8][9].…”

“…Recently, we synthesized hybrid zirconia sol-gel materials modified with acetylacetone (AcAc) [7], and demonstrated that modifying agents like AcAc and nitric acid decrease the optical band gap of the sol-gel zirconia from 4.84 eV to about 3 eV. Doping with AcAc leads to yellow-brown materials [7][8][9]. The well-known color of AcAc-containing zirconia sol-gel materials is caused by Zr(IV)-AcAc complex formation during hydrolysis in the liquid (sol) state, which exhibits strong absorption in the UV region and low-intensity absorption in the visible spectral region [7].…”

“…Doping with AcAc leads to yellow-brown materials [7][8][9]. The well-known color of AcAc-containing zirconia sol-gel materials is caused by Zr(IV)-AcAc complex formation during hydrolysis in the liquid (sol) state, which exhibits strong absorption in the UV region and low-intensity absorption in the visible spectral region [7].…”

“…The experimental conditions and precursor used determine the characteristics of the modified zirconia sol-gel. Zr butoxide has been used as a precursor to prepare Zr(IV)-AcAc oxide materials [7]. Its structure has recently been the focus of intense study, and the results of this research seem to be Electronic supplementary material The online version of this article (doi:10.1007/s00894-011-1257-3) contains supplementary material, which is available to authorized users.…”

pH-responsive lyotropic liquid crystals for the preparation of pure cubic zirconia nanoparticles

“…The preparation of stable pure cubic zirconia at room temperature without any dopant has been extensively investigated [11][12][13]. Different methods have been explored to synthesize zirconia nanoparticles through various processes, such as hydrothermal precipitation [14,15], microwave-hydrothermal treatment [10], and sol-gel precipitation [3,[16][17][18]. Roy and Ghose [8] and Rush et al [19] prepared pure nanocrystalline cubic zirconia by precipitation in a polymer matrix.…”