载银二氧化钛光催化性能的研究

考察了用Ag2CO3法制备的载银二氧化钛对十二烷基苯磺酸钠(SDBS)降解反应催化活性的差异。结果表明,与未改性样品比较,载银TiO2的光催化活性得到了明显提高,最佳载银量约为5%。载银TiO2经红外干燥,催化活性进一步提高且最佳载银量变化为10%。对载银TiO2进行超声波震荡处理,催化活性也可以显著提高。经红外干燥处理载银10%TiO2对SDBS的4h和5h催化降解率分别达到了80.40%和89.57%,为本试验中最佳催化剂。

Study on photocatalytic properties of TiO2-carring silver

The distinction of photocatalytic activity of degradating sodium dodecyl benzene sulfonate(SDBS) is tested by TiO2 carring silver (Ag TiO2) prepared from Ag2CO3.The results showed that, compared with the untreated sample, Ag TiO2 exhibits higher photocatalytic activity, the optimal quantity of Ag is about 5%. Ag TiO2 treaded by infrared ray shows a further photocatalytic activity and the optimal quantity of Ag changes to 10%. Ag TiO2 is treaded by ultrasonic wave, the catalysis activity can be improved notably too. Using 10%Ag TiO2 treaded by infrared ray, the degradation velocity of SDBS reached 80.40% and 89.57% respectively after 4 h and 5 h,it is the best catalyst in this experiment.