Effect of Process Factors on TiO<sub>2</sub> Loading Rate of Wooden Activated Carbon Fibers Loaded TiO<sub>2</sub> as Packaging Sterilization Material

In order to achieve food packaging sterilization rapidly and improve packaging sterilization property, the nanoTiO 2 photocatalyst loaded on wooden activated carbon fibers (WACFs) is prepared by sol-gel method. The effects of loading processes on loading rate of nanoTiO 2 are studied. It is shown that the loading rate of nanoTiO 2 increases with decreased deionized water and increased nanoTiO 2 impregnation solution concentration; the loading rate of nanoTiO 2 initially increases and then decreases with increased alcohol content and dip-coating time, but the dip-coating time only has weak influence on the loading rate of nanoTiO 2 . When the ratio of butyl titanate to alcohol is 1:9, the ratio of butyl titanate to water is 3:1, the dip-coating time is 20 min and the nanoTiO 2 impregnation solution concentration is 2 mg/ml, the loading rate of nanoTiO 2 reaches maximum, which is 33.64%.