| 摘要 |
The presente invention relates to a composition having photocatalytic selfcleaning properties for use as a NO, removing coating on material ;urface, comprising at least: a) photocatalytic titanium dioxide particles having at least a de-NO<SUB>X</SUB> activity, b) particles having a de-HNO3 activity, c) an opacifying agent, and d) a silicon based-material in which said particles are dispersed, wherein said photocatalytic particles have a crystalline size ranging from 1 to 50 nm. |
