【摘要】 以凹凸棒石粉末负载TiO2为催化剂对染料废水进行光催化氧化实验,研究了催化剂的投加量、光照时间以及起始浓度对酸性品红染料废水光降解作用的影响。结果表明:负载TiO2凹凸棒石催化剂与纯TiO2粉末相比具有更高的光催化活性,负载催化剂投加量在0.25g/L时,光催化效果最好。催化反应在很短时间内即能达到较高的去除率,3h后的平均去除率均可达95%。更多还原

【Abstract】 Photocatalysis of fuchsine dyestuff wastewater has been carried out by using TiO2-coated palygorskite powder.The effects of some factors,such as dosage of catalyst,illumination time and initial concentration of the dyestuff wastewater on the photodegradation are discussed.The experimental results show that TiO2-coated palygorskite powder has more efficient catalytic activity compared with pure TiO2 powder.The maximum removal rate was achieved when the amount of TiO2-coated palygorskite catalyst was 0.25 g/L.Under these condition,the photocatalytic reaction had a higher decoloring rate in a shorter time,the average decoloring rate can reach 95% after 3 h of reaction.更多还原