Collect. Czech. Chem. Commun. 2008, 73, 1222-1230

Structural Study of Tailored Titania Thin Layers

Olga Šolcováa,*, Lenka Matějováa, Simona Krejčíkováa, Zdeněk Matějb, Radomír Kuželb, Zdeněk Strýhalc and Oldřich Benadad

a Institute of Chemical Process Fundamentals, Academy of Sciences of the Czech Republic, v.v.i., Rozvojová 135, 165 02 Prague 6, Czech Republic
b Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 121 16 Prague 2, Czech Republic
c Department of Physics, Faculty of Science, J. E. Purkyně University in Ústí nad Labem, České mládeže 8, 400 96 Ústí nad Labem, Czech Republic
d Institute of Microbiology, Academy of Sciences of the Czech Republic, v.v.i., Vídeňská 1083, 142 20 Prague 4, Czech Republic


Thin nanolayers of titania prepared by repeated dip-coating of silica glass into a transparent homogeneous sol made from nonionic surfactants with various numbers of oxyethylene units were studied. Calcination in air stream was used to convert transparent gel layers into anatase layers. The surface morphology, roughness, structure and texture properties were estimated by nitrogen physical adsorption, X-ray diffraction characterization, atomic force microscopy, transmission and scanning electron microscopy. Additionally, the contact angle determination was tested as a rapid method for evaluation of the titania layer surface quality. The influence of the number of oxyethylene units in surfactants on texture and structure properties of the prepared titania layers was found and discussed.

Keywords: Sol-gel processes; Thin films; Texture; Nanostructures; AFM; XRD; Nitrogen adsorption.

References: 18 live references.