Nano Express

Nanoscale Research Letters

, Volume 4, Issue 2, pp 181-186

Open Access This content is freely available online to anyone, anywhere at any time.

A Rapid Synthesis of Oriented Palladium Nanoparticles by UV Irradiation

  • S. NavaladianAffiliated withDepartment of Chemistry, National Centre for Catalysis Research, Indian Institute of Technology Madras
  • , B. ViswanathanAffiliated withDepartment of Chemistry, National Centre for Catalysis Research, Indian Institute of Technology Madras
  • , T. K. VaradarajanAffiliated withDepartment of Chemistry, National Centre for Catalysis Research, Indian Institute of Technology Madras
  • , R. P. ViswanathAffiliated withDepartment of Chemistry, National Centre for Catalysis Research, Indian Institute of Technology Madras Email author 

Abstract

Palladium nanoparticles of average size around 8 nm have been synthesized rapidly by UV irradiation of mixture of palladium chloride and potassium oxalate solutions. A rod-shaped palladium oxalate complex has been observed as an intermediate. In the absence of potassium oxalate, no Pd nanoparticles have been observed. The synthesized Pd nanoparticles have been characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM), selective area electron diffraction and energy dispersive analysis by X-rays (EDAX) analyses. XRD analysis indicates the preferential orientation of catalytically active {111} planes in Pd nanoparticles. A plausible mechanism has been proposed for the formation of anisotropic Pd nanoparticles.

Keywords

Pd nanoparticles UV irradiation Potassium oxalate Preferential orientation Texture coefficient