Synthesis and Photocatalytic Activity of Ti-pillared Bentonite  

作　　者：TANG Jianwen WU Pingxiao ZHENG Shaoyan LIU Yun WANG Feifei XIE Xianfa 

机构地区：[1]College of Environmental Science and Engineering, South China University of Technology, Guangzhou, Guangdong 510640

出　　处：《Acta Geologica Sinica(English Edition)》2006年第2期273-277,共5页地质学报（英文版）

基　　金：the National Natural Science Foundation of China （Nos. 40202007, 40573064）; the Natural Science Foundation of Guangdong Province （No. 04020017） is gratefully acknowledged.

摘　　要：Ti-pillared bentonite has been successfully prepared using a modified method that can induce the transformation of TiO2 pillar from amorphous to anatase phase at a low temperature （150℃）. The value of d0.01 =1.94 nm obtained by Ti-pillared bentonite is larger than that of corresponding raw clay （1.56 nm）. Due to large numbers of Ti-pillars formed, the Ti-pillared bentonite shows an excellent ability in adsorbing Rhodamine B （RB）. The photocatalytic activity and kinetic equation are investigated by decomposing RB solution under the UV irradiation. It is found that the Ti- pillared bentonite shows super photocatalytic activity for the degradation of RB solution compared with the untreated bentonite and pure TiO2, and the kinetic equation of the degradation of RB solution is a 1.5-oder equation.Ti-pillared bentonite has been successfully prepared using a modified method that can induce the transformation of TiO2 pillar from amorphous to anatase phase at a low temperature （150℃）. The value of d0.01 =1.94 nm obtained by Ti-pillared bentonite is larger than that of corresponding raw clay （1.56 nm）. Due to large numbers of Ti-pillars formed, the Ti-pillared bentonite shows an excellent ability in adsorbing Rhodamine B （RB）. The photocatalytic activity and kinetic equation are investigated by decomposing RB solution under the UV irradiation. It is found that the Ti- pillared bentonite shows super photocatalytic activity for the degradation of RB solution compared with the untreated bentonite and pure TiO2, and the kinetic equation of the degradation of RB solution is a 1.5-oder equation.

关 键 词：Ti-pillared bentonite PHOTOCATALYST kinetic equation ADSORPTION CLAY 

分 类 号：P619.255[天文地球—矿床学]