Influence of calcination temperature on the microstructure of porous TiO2 films

Abstract

To obtain porous titanium dioxide films, the dip-coating solution was prepared by hydrolysis of Ti isopropoxide and then complexed with trehalose. The porous titanium dioxide film was prepared by dip-coating technique on glass substrate with this solution. The film was composed of nano sized particles (20 nm). The films were calcined at various temperatures for 30 min. XRD analysis showed that the films heated up to 400-650°C were crystalline in the anatase phase. The film heated to 700°C showed the rutile phase.