Abstract
Pluronic (P123) capped lead sulphide (PbS) nanoparticles were synthesized for the first time by simple wet chemical method. Series of experiments were conducted by changing the concentration of P123 to establish the most suitable conditions for obtaining different morphologies of PbS nanoparticles. The synthesized product has been characterized by powder X-ray diffraction (XRD), UV–Vis spectrophotometry, scanning electron microscopy (SEM), transmission electron Microscopy (TEM), energy dispersive X-ray spectroscopy (EDX) and photoluminescence studies. The particle size observed from XRD analysis is around 44–3 nm. Significant “blue shift” from bulk material was observed on the PbS nanoparticles using UV–Vis spectra. A sevenfold increase in photoluminescence intensity has been observed from PbS nanoparticles after surface passivation by P123 agent.
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