One pot direct synthesis of mesoporous SnO_2/SBA-15 nanocomposite by the hydrothermal method

摘要

We report a novel one step route for direct loading of SnO_2 into the mesoporous framework of SBA-15 by simultaneous co-condensation of Sn precursor and silica source using the hydrothermal method. HRTEM images confirm that co-condensation of both Sn and silica species leads to uniform distribution of SnO_2 nanoparticles in the framework of SBA-15 whereby retaining the mesoporous characteristics as confirmed using X-ray diffraction (XRD), N_2 adsorption-desorption and energy-dispersive X-ray (EDX) spectroscopy. The mesoporous framework of SBA-15 does not collapse although the efficiency of SnO2 loading decreases with increment of SnO_2 content in SBA-15.