LIU Zhihai, LI Cheng, JIA Liping

(Department of Materials Science and Technology, Nanjing Univers ity of Aeronautics and As tronautics , 210016)

Abstract:Trans ition element subs tituted titanic acid nanotubes were fabricated by hydrothermal method us ing Co doped rutile TiO₂ nanopowders as precursors.The properties of products were characterized by SEM,TEM,XRD and EDS.The photodegradation performances of Co-subs tituted titanic acid nanotubes for rhodamine B were s tudied.The results show that the diameter of the nanotube was around 35 nm with the length ranging from 200 nm to 800 nm.Compared with pure titanic acid nanotubes,the photocatalytic behavior of the Co-subs tituted nanotubes is much better under the same condition.There was the mos t appropriate doping ratio of Co for Co-subs tituted titanic acid nanotubes.The photocatalys is performance of nanotubes will descend with the increasing original concentration of rhodamine B. There was a mos t suitable adding amount of nanotubes in the sys tem.

Keywords: hydrothermal method, Co-subs tituted, titanate nanotube