Photocatalytic Degradation of Dicofol and Pyrethrum with Boric and Cerous Co‐doped TiO2 under Light Irradiation

Abstract

AbstractBoric and cerous co‐doped nano titanium dioxide (B/Ce co‐doped TiO2) 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 TiO2 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 TiO2, but multiplicate phases, including anatase, rutile and less brookite phases, were identified both in the pure TiO2 nanoparticles and Ce‐doped TiO2 nanoparticles. The band gap value of B/Ce co‐doped nano TiO2 was narrower than that of undoped nano TiO2. Compared to undoped TiO2, a stronger absorption in the range of 420 to 850 nm was found for B/Ce co‐doped nano TiO2, which presented a higher photocatalytic activity in the degradation of dicofol, cyfluthrin and fenvalerate than both Ce doped nano TiO2 and pure nano TiO2 under the same light irradiation.