Synthesis of Nickel Nanoparticles Using Poly (Vinyl Alcohol) As A Capping Agent

Abstract

Nickel nanoparticies (NNPs) were synthesized by reduction of nickel (II) using poiy(vinyl alcohol) (PVA) as a capping agent. The NNPs were characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive X-ray (EDX) spectroscopy and X-ray diffraction (XRD) techniques. The addition of PVA has been found to profoundly influence the size, agglomeration and distribution of NNPs. The average diameters of NNPs are in the range of 3-7 nm in presence of PVA. XRD data indicate that NNPs are crystalline with face centered cubic structures. SEM images show the existence of secondary structures such as clusters and loops resulted from interactions between particles. The sizes of the NNPs were by and large uniform due to the use of PVA as the capping agent. FT-IR and thermogravimetric analyses confirm the interaction of PVA w ith NNPs to offer improved thermal stability

Asiat. Soc. Bangladesh, Sci. 40(2): 197-205, December 2014