Abstract
Silicon dioxide-based fractal aggregates as an example of self-assembly in sol-gel processes were prepared. Main evolution stages of tin dioxide-silicon dioxide fractal systems were demonstrated by atomic force microscopy (AFM): diffusion-limited aggregation, cluster-cluster aggregation, formation of percolation net and 3D-net nanostructures. The formation possibilities of porous nanomaterials based on different metal oxides, including those based on tin dioxide, iron oxide and zinc oxide, were shown. New chemical etching method to obtain microreactors was developed. Specific surface area of nanostructures was investigated by thermal desorption of nitrogen and gas sensitive properties of tin dioxide nanocomposites were also studied.
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