GUO Yadan ^{1, 2}, JIANG Haihong ², BU Xianzhong ³, FU Xianting ², GAO Bai ² , MA Wenjie ²
(1. State Key Laboratory Breeding Base of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, Jiangxi, China; 2. School of Water Resources & Environmental Engineering, East China University of Technology, Nanchang 330013, Jiangxi, China; 3. School of Materials and Mineral Resource, Xi’an University of Architecture Technology, Xi’an 710055, Shaanxi, China)

Abstract: In this paper, the anatase TiO₂ was successfully synthesized using titaniumtetrachloride as raw material by hydrolyzing titania sol.The TiO₂ catalyst was characterized by XRD, SEM, DRS and LRS. The photocatalytic activity of TiO₂ was studied by reduction of U(VI).The results showed that the band gap absorption edge of TiO₂ was 398 nm, which corresponded to the band gap energy of 3.14 eV. The reduction rate (120 min) of the U(VI) by anatase TiO₂ reached 99% under UV irradiation. It provides an experimental basis to deal with low concentration uranium by photocatalytic reduction technology.

Key words: anatase TiO₂; low-temperature; photocatalytic reduction; U(VI)