To deplete or weaken gradually; devitalize. 使逐渐耗竭或削弱;
However, TiO2 is devitalize, essy agglomeration owned and difficult recycling when used in the present. So the immobilization of TiO2 can solve these problems. 但TiO2在使用中存在易失活,易团聚和难回收等问题,所以TiO2的负载化对光催化技术的实用化非常重要。