Effect of SH-containing ligands on the growth of CdS nanoparticles

Abstract

Cadmium sulfide nanoparticles have been synthesized via precipitation from solution, using thioglycolic acid (TGA) and L-cysteine as stabilizing agents. The nanoparticle size has been evaluated using the absorption spectra of the solutions, dynamic light scattering data, and transmission electron microscopy. The L-cysteine-stabilized nanoparticles are smaller and more uniform in size compared to the TGA-stabilized nanoparticles. The effect of synthesis temperature on nanoparticle growth has been studied. With increasing synthesis temperature, the average radius of the nanoparticles increases, which is accompanied by their aggregation and broadening of their size distribution.