Paper Title
Synthesis and Effect of Temperature on The Structural Properties of Pbs Nanoparticles Trapped in Y Zeolite

Abstract
Nanoscale materials take attention of many scientists because of their special properties [1], different from that of the bulk state. Particulary, semi-conductor quantum dots (QDs) present size dependent optical properties [2-3-4], which give them a choice place in several applications such as photonics and medical imaging. Lead sulfide semiconductor nanoparticles trapped in Y zeolite with diameter in the range of 20-40 nm have been prepared with the reaction of Pb2+-ionic exchanged Y zeolite with 2-mercaptoethanol so-called thiol (RSH) which used as a sulfur atom source. The samples were heat treated at various temperatures. Several techniques were used to characterize the PbS nanoparticles such as X ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). After thiol addition, X ray diffraction reveals the formation of galena lead sulfide phase [5].Increasing the calcination temperature leads to a volume expansion of PbS nanorods observed by scanning electron microscopy. Keywords - Y Zeolite, Semi-conductor, Nanorods, PbS, Thiol.