Size-controlled synthesis and characterization of polyvinyl alcohol coated palladium nanoparticles

作者：Roy Partha Sarathi; Bagchi Joyeeta; Bhattacharya Swapan Kumar^*

来源：Transition Metal Chemistry, 2009, 34(4): 447-453.

DOI：10.1007/s11243-009-9215-y

In order to synthesize stable, catalytically active palladium nanoparticles with low polydispersity, a one-pot synthesis by the facile reduction of palladium chloride with citric acid in an aqueous solution of steric stabilizer polyvinyl alcohol (PVA) has been developed. The resulting nanoparticles are highly water-dispersible, excellent electro-catalysts, and have long shelf life. The palladium nanoparticles have been characterized by physico-chemical, spectroscopic, microscopic, and CV studies. The average size of the nanoparticles can be readily tuned from 8.1 to 53 nm by controlling the extent of reflux for mixtures containing suitable concentrations of metal ion, reducing agent and capping polymer, which also influence the size. Despite the surface-protecting action of PVA, the palladium nanoparticles are electro-catalytically active and exhibit size-dependent electro-catalytic behavior.

• 出版日期2009-5