Some Influencing Factors on Photocatalytic Activity of TiO2 Film Prepared Using sol-gel Method
TiO2 film was deposited on glass substrate by a solgel process．The influences of the SiO2 layer,distance between lamp and solution，and air flow rate were investigated.Methyl orange can be hardly degraded under UV light exposure alone． The adsorption rate of methyl orange on TiO2 film is negative after 25 min of stirring．Although distance between the lamp and the solution varies from 5.5 cm to 7.5 cm,the degradation rates decline slightly．There is nearly no influence of air flow rate on the entire degradation ability of the photocatalyst．SiO2 film coated on microscope glass slide has no photocatalytic activity under UV irradiation．in prior to deposit TiO2 film onto the surface of the glass substrate．a SiO5 thin layer is coated．The results indicate that the TiO2 film with SiO2 layer has much better photocatalytic activity that the film without SiO2 layer．
TiO2 film Photocatalytic degradation Methyl orange Sol-gel
Wenjie Zhang Qian Li Wenbin Liu
School of Environmental and Chemical Engineering,Shenyang Ligong University Shenyang 110159,China
国际会议
海口
英文
299-302
2011-02-22（万方平台首次上网日期，不代表论文的发表时间）