NGHIÊN CỨU ĐIỀU CHẾ VÀ ỨNG DỤNG HỆ XÚC TÁC QUANG TiO2/SiO2 ĐỂ XỬ LÝ NƯỚC THẢI CHỨA 2,4,6-TRINITROTOLUEN

Tóm tắt

This paper presents results of research on preparation of TiO2/SiO2 photocatalytic material applying for
treatment of wastewater containing 2,4,6-Trinitrotoluen. Results of synthesizing TiO2/SiO2 photocatalysis
by sol-gel method in water - organic solvent with a 1:1 molar ratio show the apperance of grain in the
form of anatase TiO2 grip on SiO2 with nano-sized of 5 - 20 nm when sample calcined at 500oC. Studying
on the ability to apply new materials for wastewater treatment containing 2,4,6-Trinitrotoluen shows that
TiO2/SiO2 is 6 g/L for the largest performance degradation reaching 65.6%. At the same time the process
of TNT decomposition occurs in neutral and alkaline environments. In addition, the reaction temperature
does not affect the performance of the decomposition reaction of TNT.