Direct Hydrothermal Synthesis of Highly Ordered Sn–SBA-15 Mesoporous Materials
Pallavi ShahA.V. RamaswamyVeda Ramaswamy
Abstract
Abstract Well-ordered Sn4+-incorporated mesoporous silica SBA-15 samples have been synthesized from tetraethyl orthosilicate (TEOS) and SnCl4 (Si/Sn = 114–15) using nonionic surfactants under a slightly higher pH medium (optimum H2O to HCl molar ratio) and characterized by XRD (an increase in lattice parameter), TEM (no SnO2 species) and UV–vis spectral (absorption at 211 nm) techniques to show that Sn4+ ions are in tetrahedral coordination in Sn–SBA-15.
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