摘要：In order to enhance the adsorption performance of TiO 2 , CeO 2 was tentatively introduced into thematrix of TiO 2 by sol-gel method. The prepared adsorbent CeO 2 -TiO 2 was used for the efficientadsorptive removal of antibiotics tetracycline (TC). It was observed that the introduction of CeO 2 intoTiO 2 matrix has improved the removal efficiency of TC by 57.6% compared to pure TiO 2 . The uptake ofTC was highly dependent on the solution pH conditions and the highest uptake of TC occurred underalkaline condition. Linear simulation method failed to discern which kinetic model was better to describethe kinetic data between pseudo-first-order and pseudo-second-order models. By nonlinear simulation,Elovich kinetic model was found to be the best model to describe the TC adsorption onto CeO 2 -TiO 2 ,indicating that the pronounced diffusion-control process was the rate-determining step. The maximaladsorption capacity of the prepared sorbent was 59.3 mg/g using Langmuir isotherm model at 298 K.The uptake of TC increased with an increase in the reaction temperature, which demonstrates that theadsorption of TC was endothermic.
