Synthesis and characterization of magnetically separable Fe3O4@SiO2@TiO2-Ag composite for degradation of Acid Blue 161
Listed in
This article is not in any list yet, why not save it to one of your lists.Abstract
Recyclable core-shell photocatalysts with high photocatalytic activity, which are used in water treatment and developed with great efforts in material chemistry, have attracted a lot of attention in recent years. Fe 3 O 4 @SiO 2 composite was synthesized by the Stöber method, and Fe 3 O 4 @SiO 2 @TiO 2 and Fe 3 O 4 @SiO 2 @TiO 2 -Ag composites were successfully synthesized by the sol-gel method. For the characterization of the composites, besides SEM-EDS, TEM, XRD, FTIR, UV-Vis, XPS, and VSM devices were used for magnetization measurement and then the photocatalytic activity on Acid Blue 161 dyestuff was tested. Acid Blue 161 dyestuff was used to examine the photocatalytic degradation of composites. The Fe 3 O 4 @SiO 2 @TiO 2 composite doped with Ag particles showed better photocatalytic activity than the commercially used Degussa P25 due to the suppression of the recombination of electron-hole pairs. Compared with other composites, the Fe 3 O 4 @SiO 2 @TiO 2 -Ag composite exhibited high photocatalytic activity by removing 100% of the dye under UV radiation. The synthesized Fe 3 O 4 @SiO 2 @TiO 2 -Ag composite photocatalyst is a cost-effective photocatalytic system due to its wide application area, high efficiency, and recyclability.