Formation of inorganic nanocomposites by filling TiO_2 nanopores with indium and antimony sulfide precursor aerosols

摘要

Nanocomposites of nanoporous-TiO_2/In_2S_3 and np-TiO_2/Sb_2S_3 were formed by deposition of In_2S_3 or Sb_2S_3 using spray ion layer gas reaction technique from their precursor solutions onto nanoporous TiO_2 substrates at temperatures of 150,175 and 200 ℃. The least penetration of the precursor into np-TiO_2 was achieved for np-TiO_2/In_2S_3 nanocomposites from indium acetylacetonate salt. The deepest penetration was obtained for both np-TiO_2/In_2S_3(Ci) and np-TiO_2/Sb_2S_3 nanocomposites with effective diffusion coefficients of 3.3 × 10~(-3) cm~2/s and 3.2 × 10~(-3) cm~2/s, respectively. The transport of the precursors in np-TiO_2 and the formation of different nanocomposites were described the regime of the Knudsen diffusion model.