Synthesis of nanocomposite materials by reduction of group I metals of the periodic table Au, Ag in the voids of the opal matrix

We carried out experiments on the synthesis of nanocomposite materials based on supramolecular silica structures, consisting of monodisperse spherical particles 300 nm in diameter and Group I metals of the periodic system Au and Ag. We determined basic conditions (preliminary preparation, type of reducing agent used, metal concentration and holding time) that allowed producing nanocomposite materials with various degrees and forms of entering of metal particles, both on surface of silica spheres and in packing voids between them. The obtained nanocomposite materials can find wide application in various fields of optics, electronics and catalysis.