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Abstract: The kinetics of silicon dioxide shell formation on metal nanoparticles by tetraethoxysilane hydrolysis in the absence of catalysts is studied. The possibility of stabilizing Au–Ag alloy nanoparticles by coating with a 5 nm thick silicon dioxide shell is shown. A model of core–shell nanoparticles consisting of a metal core and a multilayer SiO2 shell, having a phosphor based on water-soluble porphyrin encapsulated between its layers, is proposed. It is shown that encapsulation in a multilayer SiO2 shell leads to an increase in the intensity of porphyrin luminescence.
Original languageEnglish
Pages (from-to)546–552
Number of pages7
JournalGlass Physics and Chemistry
Volume50
Issue number5
DOIs
StatePublished - 23 Mar 2025

    Research areas

  • colloidal solution, core, nanoparticles, shell, silicon dioxide, water-soluble porphyrin

ID: 127513501