TiO2/CTAB沸石复合材料的制备及其光催化性能OA

This paper aims to explore the preparation process of modified fly ash zeolite as a carrier loaded with TiO2.By taking the fly ash as the raw material,the study is complished by preparing the fly ash zeolite with the NaOH alkali fusion hydrothermal method;organically modifying the fly ash zeolite with cetyl trimethyl ammonium bromide(CTAB)for obtaining the CTAB-modified fly ash zeolite(CTAB zeolite);loading TiO2 on to the CTAB zeolit by the sol-gel method for preparing a TiO2/CTAB zeolite composite photocatalytic material;analyzing the effects of TiO2/CTAB zeolite under different preparation conditions on the adsorption performance of the methyl orange-simulated organic wastewater through sin-gle-factor experiments;and optimizing the process with the response surface methodology and performing the characterization by using SEM,XRD,and N2 adsorption desorption.The experimental results show that the best photocatalytic degradation is achieved when the initial concentration of methyl orange solu-tion is 400 mg/L,the dosing amount is 6 g/L,the dark reaction time was 30 min,and the pH is 8,with a maximum degradation amount of 64.21 mg/g and a maximum removal rate of 96.31%.The proposed study can provide a theoretical basis for the selecting wastewater adsorbents of power plants and coal plants in industries.