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Synthesis and Photocatalytic Activity of Ti‐pillared Bentonite
Author(s) -
Jianwen TANG,
Pingxiao WU,
Shaoyan ZHENG,
Yun LIU,
Feifei WANG,
Xianfa XIE
Publication year - 2006
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/j.1755-6724.2006.tb00242.x
Subject(s) - bentonite , photocatalysis , materials science , anatase , rhodamine b , chemical engineering , amorphous solid , degradation (telecommunications) , nuclear chemistry , catalysis , chemistry , organic chemistry , telecommunications , computer science , engineering
Ti‐pillared bentonite has been successfully prepared using a modified method that can induce the transformation of TiO 2 pillar from amorphous to anatase phase at a low temperature (150°C). The value of d 001 =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 TiO 2 , and the kinetic equation of the degradation of RB solution is a 1.5‐oder equation.