Effect of synthesis conditions on the structure and sorption properties of films based on mesoporous tin dioxide
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We have conducted a comparative study of the synthesis conditions for mesoporous materials and films based on tin dioxide in the presence of different types of templates, and we have studied their thermal stability and sorption properties. We demonstrate the advantage of using alcoholic reaction media and nonionic templates (triblock copolymers Pluronic-123 and Pluronic-127) to obtain thin films of mesoporous SnO2 with relatively high parameters for the porous structure (Vmeso = 0.15 cm3/g, SBET = 147 m2/g) and cassiterite crystallite sizes down to 2.7 nm, significantly smaller than the thickness of the walls.