Synthesis of cadmium sulphide in pure and mixed Langmuir-Blodgett films ofn-octadecylsuccinic acid

摘要: Cadmium sulphide (CdS) nanoparticles were grown by the reaction of sodium (Na2S) with Langmuir-Blodgett (LB) films cadmium salts ofn-octadecylsuccinic acid (ODSU) and LB ODSU in mixtures octadecylamine octadecyl alcohol. The results indicate that heterogeneous nucleation aggregation pure due to processes like Ostwald ripening are destabilized presence long-chain amine alcohol mixed systems. CdS monitored UV-visible absorption spectra, which allow an estimation size particles. morphology, nature nanocrystallites formed depend on whether sulphidation was done film or films. It is seen particles around 1.6 nm ODSU/octadecylalcohol ODSU/ while about 2.7 nm. These showed typical needle-shaped structures, as observed optical microscopic technique. Mean morphology confirmed transmission scanning electron microscopy, selective area diffraction patterns six-fold symmetry indicated crystals grow epitaxially respect monolayer. Further, crystallisation enhanced a characteristic zinc oxide (Wurtzite) structure compared matrix.