Abstract
Silver-incorporated titania (Ag/TiO2) nano-membrane were formed on the surface of domestic ceramic substrates by a sol-gel method with the use of tetrabutyl titanate and silver nitrate as precursors, acetyl acetone and nitric acid as a catalytic inhibitor, absolute ethyl alcohol as the solvent. In the same way, titanium dioxide (TiO2) films were also prepared on the same ceramic substrates. The surface morphology and the crystal structure of the Ag/TiO2 nano-membrane obtained through the method mentioned with different calcination treatment have been discussed by XRD, SEM, DRS and FTIR respectively. Compared with TiO2 nano-membrane, the XRD analysis shows that no significant shift in the crystal structure is presented because of silver ion-doping. From SEM and EDS, it is shown that spheric silver particles are spread on the surface of the nano-membrane and the insights into the compositions were provided by FTIR. DRS analysis showed that the red shift of the fundamental absorption edge of titania could be caused by silver ion-doping.
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