Boric and cerous co-doped nano titanium dioxide (B/Ce co-doped TiO 2 ) was synthesized using a sol-gel technique, which involved the hydrolyzation of tetrabutyl titanate with the addition of boric acid and cerous nitrate. The B/Ce co-doped TiO 2 was employed for the photocatalytic degradation of dicofol, cyfluthrin and fenvalerate under light irradiation. XRD, TEM, FT-IR and UV-Vis DRS methods were used to characterize the crystalline structure. Experimental results showed that only the anatase signal phase was found for B/Ce co-doped TiO 2 , but multiplicate phases, including anatase, rutile and less brookite phases, were identified both in the pure TiO 2 nanoparticles and Ce-doped TiO 2 nanoparticles. The band gap value of B/Ce co-doped nano TiO 2 was narrower than that of undoped nano TiO 2 . Compared to undoped TiO 2 , a stronger absorption in the range of 420 to 850 nm was found for B/Ce co-doped nano TiO 2 , which presented a higher photocatalytic activity in the degradation of dicofol, cyfluthrin and fenvalerate than both Ce doped nano TiO 2 and pure nano TiO 2 under the same light irradiation.
Keywords boric and cerous co-doped, titanium dioxide, pesticide, photocatalytic degradation Boric and cerous co-doped