Formation of orderly organized cubic PbS nanoparticles domain in the presence of TiO2

Formation of an orderly organized cubic-shaped PbS nanoparticles domain in the presence of TiO2 is described. Dodecylbenesulfonic acid was used as surfactant to extract lead ions and TiO2 colloidal particles together from aqueous solutions to organic phase. The obtained organosol was further influxed for several hours following treatment with H2S gas. Uniform cubic particles having ordered arrays in a long-range domain were observed on the carbon-coated grids by transmission electron microscopy. The experimental phenomena indicated TiO2 particles had an important effect on the kinetic procedure during the formation of PbS nanoparticles.