“白色污染”已成为一个全球性的环境问题。将光催化剂掺入塑料中,可制备出环境友好的光降解塑料,它在一定的使用期内具有期望的功效,而在超过使用期后,或在远未达到使用寿命期而被废弃后,在光照条件下能迅速自动分解。这种聚合物材料的自动光降解,通常需要特定的光催化剂,在催化剂的作用下,经光化学 “White pollution ” has become a global environmental problem. The incorporation of a photocatalyst into the plastic produces an environmentally friendly photodegradable plastic which has the desired effect over a certain period of use and which is discarded after it has expired or is far beyond its useful life, Under light conditions can quickly and automatically broken down. The automatic photodegradation of such polymer materials usually requires a specific photocatalyst which, under the action of a catalyst,