
Effect of Silica Additive on the Anatase‐to‐Rutile Phase ...
Dec 20, 2004· The effect of SiO 2 addition on the anatase‐to‐rutile phase transition was investigated by DTA, XRD, FTIR, and XPS. TiO 2 xerogels containing SiO 2 up to 20 mol% were prepared by mixing and hydrolyzing titanium tetraisopropoxide (TTIP) and tetraethylorthosilicate (TEOS) with HNO 3 as a catalyst. With increased amounts of SiO 2 in the xerogels, the following results were obtained: (1) the ...
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