Dependence of the size of nanoparticles of lead sulfide PbS on the chemical affinity of its formation reaction

Cadmium sulfide nanoparticles prepared by chemical bath deposition

“…This leads to formation of larger particles compared to those produced by deposition using Na 2 S. 155 If initially the starting solution contains S 27 ions produced by dissociation of Na 2 S in the preparation step, the formation of sulfide nanoparticles obeys the classical theory of precipitation and the Weymarn ± Haber precipitation rule, according to which the nanoparticle size decreases with increasing A. 156 The kinetic equation (22) and insights into the influence of the affinity A on the nanoparticle size are valid if only one crystalline phase, e.g., CdS is formed in the solution. However, the first solid phase formed in alkaline solutions is often Cd(OH) 2 (Fig.…”