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<p>Opal matrices are the basis for the preparation of composite materials with useful functional properties. Carbon fillers (primarily graphene-based) efficiently control these properties, so the search for methods to introduce and uniformly distribute carbon material in the opal matrix is relevant. In our work, we used crude oil impregnation for the rapid and simple preparation of an “Opal matrix/Graphene-containing filler” nanocomposite with thermal stability and high conductivity. The prepared three-dimensional nanocomposites had an ordered microporous silica framework and an interconnected graphene-containing carbon network doped with nitrogen. The structural transformation of carbon at different annealing temperatures was studied. The peculiarity of carbonization and graphitization in the presence of a template associated with the interaction of the carbonaceous substance and the silica surface was shown. Preheating at 800&#xa0;°C and a hydrocarbon filler helped to maintain the amorphous structure of silica at temperatures above its crystallization temperature. High conductivity and capacitive properties contribute to the use of such nanocomposites in electronics and shielding, and the spectroscopic features of the interaction of graphene structures and silica can provide optical applications.</p>

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Fabrication of graphene-containing nanocomposites based on opal matrices using crude oil as a carbon source

  • 期刊论文

  • 发表日期：

    2025年5月26日

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  • Yevgeny A. Golubev,
  • Igor V. Antonets,
  • Dmitry V. Kamashev,
  • Shiyong Sun

摘要

Opal matrices are the basis for the preparation of composite materials with useful functional properties. Carbon fillers (primarily graphene-based) efficiently control these properties, so the search for methods to introduce and uniformly distribute carbon material in the opal matrix is relevant. In our work, we used crude oil impregnation for the rapid and simple preparation of an “Opal matrix/Graphene-containing filler” nanocomposite with thermal stability and high conductivity. The prepared three-dimensional nanocomposites had an ordered microporous silica framework and an interconnected graphene-containing carbon network doped with nitrogen. The structural transformation of carbon at different annealing temperatures was studied. The peculiarity of carbonization and graphitization in the presence of a template associated with the interaction of the carbonaceous substance and the silica surface was shown. Preheating at 800 °C and a hydrocarbon filler helped to maintain the amorphous structure of silica at temperatures above its crystallization temperature. High conductivity and capacitive properties contribute to the use of such nanocomposites in electronics and shielding, and the spectroscopic features of the interaction of graphene structures and silica can provide optical applications.