Effect of Preparation Conditions of Ti Ion Species on Structural Properties of TiO₂ Pillared Mica

抄録

TiO₂ pillared mica was prepared using Ti ion species as TiO₂ precursor. The titanium ion species were obtained by an addition of several titanium alkoxides to an aqueous solution of CH₃COOH, with different CH₃COOH/Ti ratios and temperatures. The structure and properties of the TiO₂ pillared mica was studied by X-ray diffraction, N₂ adsorption, FT-IR and TG-DTA. After calcined at 500°C, the BET surface area of samples varied between 250 and 460 m²/g. The sample prepared using titanium tetraethoxide as titanium source possessed well ordered structure and higher BET surface area. The basal spacing of TiO₂ pillared mica was increased with the decrease in CH₃COOH/Ti ratio and the increase in temperature of preparation of titanium ion species, while the degree of ordered structure of pillared mica was decreased.