But a more compact film with higher loading and larger size of TiO2 but lower specific photocatalytic efficiency (ethylene conversion over unit mass TiO2 and unit area of TiO2 film) was obtained by EPD compared with dip coating method.

• 但由于电泳膜有较高的TiO2沉积量、且结构致密、TiO2的粒径较大，其比活性（单位面积上单位质量TiO2的光催化活性）却比提拉膜的低。