You can use the Ablation Laser method to synthesis lead nanoparticles. It is very easy method. I f you need help in this method contact me.

@ Mukhils Ismail....We don't have the Laser Ablation facility that's the reason I am looking for the methods by which synthesise through wet chemical route

You can try heating lead acetate in oleic acid up to 360°C under inert atmosphere, maybe it is comparable to the synthesis of iron nanoparticles (doi: 10.1038/nmat1251). I think you have to increase the reaction time. I hope it will work.