Disclosed is a modified photocatalyst sol comprising a liquid medium having dispersed therein particles of a modified photocatalyst, wherein the modified photocatalyst particles are prepared by subjecting particles of a photocatalyst to a modification treatment with at least one modifier compound selected from the group consisting of different compounds each of which independently comprises at least one structural unit selected from the group consisting of a monooxydiorganosilane unit, a dioxyorganosilane unit and a difluoromethylene unit, and wherein the modified photocatalyst particles have a specific volume mean particle diameter. Also disclosed is a modified photocatalyst composition comprising the modified photocatalyst sol and a functional substance. Also disclosed are a film formed using the above-mentioned modified photocatalyst sol or modified photocatalyst composition, a functional composite comprising the film and a substrate covered with the film, and a shaped article produced by shaping the above-mentioned modified photocatalyst composition.
本发明公开了一种改性光催化剂溶胶,该溶胶包含一种液体介质,其中分散有改性光催化剂颗粒,其中改性光催化剂颗粒的制备方法是将光催化剂颗粒用至少一种改性剂化合物进行改性处理,该改性剂化合物选自由不同化合物组成的组,每种化合物都独立地包含至少一个结构单元,该结构单元选自由单氧基二有机
硅烷单元、二氧有机
硅烷单元和二
氟亚基单元组成的组、二氧有机
硅单元和二
氟亚甲基单元组成的组,其中改性光催化剂颗粒具有比容平均颗粒直径。还公开了一种改性光催化剂组合物,该组合物由改性光催化剂溶胶和功能物质组成。还公开了一种使用上述改性光催化剂溶胶或改性光催化剂组合物形成的薄膜、一种由该薄膜和覆盖该薄膜的基材组成的功能复合材料,以及一种通过对上述改性光催化剂组合物进行成型而生产的成型品。