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A novel open-framework ecomaterial silicotitanate (Na4Ti4Si3O10) was synthesized by a combination of sol-gel and hydrothermal methods. The investigation on ion exchange properties shows that Na4Ti4Si3O10 exhibits high adsorption for cesium, i.e., Kd is as high as 60 000 mL/g in neutral solution. The crystal structure of Na4Ti3O10 was characterized by X-ray diffraction (XRD), scanning electronic microscope (SEM), transmission electron microscope (TEM), Raman spectrum, differential thermal and thermogravimetric analysis (DTA/TGA), inductively coupled plasma (1CP), and X fluorescence analysis. The compound is tetragonal, P42, a = b = 0.781 10 nm, c= 1.196 45 nm, α =β =γ = 90°, Z = 4, and Ra = 0.041; Na4Si3O10 has a three dimensional framework consisting of Ti-O octahedral clusters and Si-O tet-rahedra. The results show that Na4Ti4Si3O10 has good chemical stability, thermal stability, and high cesium ion exchange capacity in the whole pH range.
A novel open-framework ecomaterial silicotitanate (Na4Ti4Si3O10) was synthesized by a combination of sol-gel and hydrothermal methods. The investigation on ion exchange properties shows that Na4Ti4Si3O10 exhibits high adsorption for cesium, ie, Kd is as high as 60 000 mL / g in neutral solution. The crystal structure of Na4Ti3O10 was characterized by X-ray diffraction (XRD), scanning electronic microscope (SEM), transmission electron microscope (TEM), Raman spectrum, differential thermal and thermogravimetric analysis (DTA / TGA), inductively coupled α = β = γ = 90 °, Z = 4, and Ra = 0.041; Na 4 Si 3 O 10 (1CP), and X fluorescence analysis. The compound is tetragonal with P42, a = b = 0.781 10 nm, c = 1.196 45 nm. has a three dimensional framework consisting of Ti-O octahedral clusters and Si-O tet-rahedra. The results show that Na4Ti4Si3O10 has good chemical stability, thermal stability, and high cesium ion exchange capacity in the whole pH range.