tio _ 2 has been known as an n-type metal oxide semiconductor and an important inorganic function material . it can be used in fabricating medium material, photocatalytic films, reducing reflect coat, gas sensor, etc . tio _ 2 films had excellent performance with photocatalysis, resisting photo erode, difficult dissolution in acidity condition, innocuity and stabilization in light and soon on tio_2是n型金屬氧化物半導體,是一種重要的無機功能材料,可用于制作電介質材料、光催化薄膜、減反射涂層、氣敏傳感器等。tio_2薄膜具有優(yōu)異的光催化性能,抗光腐蝕,在酸性條件下難溶,對光穩(wěn)定,無毒等。