空心玻璃微球附载TiO2清除水面漂浮的油层

以空心玻璃微球为载体，采用浸涂法制备出ＴｉＯ２／ｂｅａｄｓ光催化剂．研究了利用ＴｉＯ２／ｂｅａｄｓ光催化剂降解水面漂浮的正十二烷及甲苯的可行性．结果表明，３７５Ｗ中压汞灯照射１２０ｍｉｎ，正十二烷的光催化去除率达９３．５％，光照８０ｍｉｎ时甲苯被完全光催化去除；通入空气有利于正二十烷及甲苯的光催化去除，外加微量的Ｈ２Ｏ２（５．０ｍｍｏｌ／Ｌ）可大大提高光催化去除率，向反应液中加入少量Ｎａ＋对正十二烷及甲苯的光催化去除率无明显的影响．

Photocatalytic degradation of oil films floating on water by TiO2 supported hollow glass microbeads

The TiO 2/beads photocatalyst was prepared by dip coating technique using the hollow glass microbeads as a supporter .The feasibility of photocatalytic degradation of dodecane and toluene floating on water using TiO 2/beads was studied .The results showed that 100% of toluene was photocatalytically degraded after 80min illumination and 93.5% of dodecane degraded after 120min illumination with a 375W medium pressure mercury lamp.Bubbling air was favourable for the photocatalytic removal of dodecane and toluene.The photocatalytic removal efficiency was increased rapidly by adding a trace amount of H 2O 2(5.0mmol/L).Adding a small amount of Na ,no obviously effect for the photocatalytic removal of dodecane and toluene was observed.