新型固定式ZnO光催化膜反应器的研究

以棒状纳米ZnO颗粒堆积形成的孔隙组装烧结成多孔陶瓷光催化膜，用其制成逆流固定式新型光催化膜反应器. 400~800℃范围内，随烧结温度提高，ZnO多孔膜孔隙变小. 实验研究了光源、ZnO添加量对悬浮型光催化反应器降解水溶液中染料亚甲基蓝(MB)的影响，结果表明，随ZnO添加量增加，光催化反应速度变快，当100 mL 20 mg/L MB溶液中添加量超过0.05 g时，光催化反应不随添加量增加而增加. 随持液量增加，反应器中反应速度先降低后增加. 新型固定式光催化膜反应器能更有效供氧而具有更快的光催化速度.

Research on a New Type Immobilized ZnO Photocatalytic Membrane Reactor

Porous membrane was sintered with the assembly of ZnO nanorods produced by RF plasma,and a new photo-catalytic membrane reactor established using the produced porous membrane.The membrane sintered from 400℃ to 800℃ show that the size of its pores decreases with the increase of sintering temperature.The membrane sintered at 600℃ shows better porous structure.The photocatalytic degradation of methylene blue(MB) in aqueous solution was examined by traditional photocatalytic suspension reactor and newly built membrane reactor.The photocatalytic reaction rate increases with the increase of the ZnO,and reaches the maxima when the amount of ZnO is 0.05 g corresponding to 100 mL 20 mg/L MB solution.The reaction rate in the membrane reactor increases with the increase of dosage of the solution.The new membrane reactor shows great increase in supply of oxygen for photocatalytic reaction.