摘要
通过对活性炭(ACF)负载纳米TiO2降解苯的实验研究,分析了TiO2负载量、光照条件、苯初始浓度及ACF/TiO2层数对催化剂活性的影响,结果表明:适量负载TiO2能充分发挥ACF的吸附性和TiO2的光催化功能,提高降解效果;ACF/TiO2在不同光照条件下紫外光效果>自然光效果>黑暗条件效果;苯初始浓度在一定范围(200ppm)时,18.49g/m2 ACF/TiO2具有良好的降解效果,浓度太高,降解效果不理想;在苯浓度为100ppm的实验环境下,3层ACF/TiO2就足以起到很好的降解效果,因此在设计滤毒罐时,可以根据使用场所有毒气体浓度的不同采用不同层数的ACF/TiO2装填滤毒罐。
Through the experimental study on photocatalytic degradation of benzene by TiO2 supported on ACF,the influence of TiO2 loading,light intensity,the initial concentration of benzene and the layers of ACF/TiO2 on catalyst activity was analyzed.The results show that the appropriate amount of loading TiO2 could give full play to the adsorption of ACF and photocatalytic degradation of TiO2,which can improve the degradation effect.The degradation efficiency of ACF/TiO2 under different light conditions is ultraviolet natural lightdark conditions.When the concentration of benzene is in a certain range（200ppm）,ACF/TiO2 has good degradation effect.While the concentration of benzene is too high,the degradation effect is not ideal.When the concentration of benzene in the experimental environment of 100 ppm,3layers of ACF/TiO2 are enough to play agood degradation efficiency,which means that it could make different layers of the filter canister according to using occasions different when designing the filter canister.
出处
《实验技术与管理》
CAS
北大核心
2015年第7期33-37,共5页
Experimental Technology and Management
基金
公安部应用创新项目(2009YYCXWJXY110)
