ペルオキソチタン酸溶液から誘導したアナターゼゾルで作製したコーティング膜の光触媒活性

概要

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Anatase sols were prepared from peroxotitanic acid solution by heating at 100℃ for 2-20h. The sols consisted of fine anatase particles of diameters less than 20 nm and arrowhead-like particles larger than 20 nm. The sols heated for 2-6h dispersed well, whereas the sols heated for 8-20h tended to aggregate. The powders obtained by drying the sols had high specific surface areas of 180 to 245 m^2・g^<-1>. On photocatalytic degradation of a commercial vegetable oil on films prepared from the sols, the weight loss was approximated by the zero-order kinetics on the oil concentration at the early stage of the degradation. The film prepared from the sol heated for 6h showed a highest rate constant of 1.68 × 10^<-5> g・cm^<-2>・h^<-1> under ultraviolet light irradiation at 1.4 mW・cm^<-2>.
社団法人日本セラミックス協会の論文
1998-03-01