Abstract
Mesostructured zirconia has been synthesized by using zirconium chloride and PEO nonionic ethoxylated sorbitan ester (Tween-20, -40, -60 or -80) as a zirconium source and structure-directing agent in an aqueous medium. To remove the occluded surfactants, UV/ozone treatment has been utilized instead of calcination due to thermal instability. This results from a special molecular structure of Tween surfactant. From XRD, SEM and TEM analyses, the materials treated with UV light and in-situ generated ozone has a wormhole structure and ill-defined or well-defined spherical particles.
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Suh, YW., Rhee, HK. Synthesis of stable mesostructured zirconia: Tween surfactant and controlled template removal. Korean J. Chem. Eng. 20, 65–70 (2003). https://doi.org/10.1007/BF02697186
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DOI: https://doi.org/10.1007/BF02697186