Solvothermal production of CdS nanorods using polyvinylpyrrolidone as a template

Abstract

CdS nanorods were solvothermally produced using Cd(NO 3 ) 2 and S powder in ethylenediamine containing different amounts of polyvinylpyrrolidone (PVP). The phase with hexagonal structure was detected using Xray diffraction (XRD) and selected area electron diffraction (SAED). Their SAED patterns were in accordance with those of the simulations. Scanning and transmission electron microscopies (SEM and TEM) revealed the presence of CdS nanorods with their lengths influenced by different amounts of PVP. The nanorods were also characterized using high resolution TEM (HRTEM). They grew in the [001] direction normal to the (002) parallel crystallographic planes composing the nanorods. Raman spectra showed the 1LO (first harmonic) and 2LO (second harmonic) modes at the same wavenumbers although the products were produced under different conditions.

Investigation of non-linear optical properties of CdS/PS polymer nanocomposite synthesized by chemical route

“…In PNCs, polymer not only stabilizes the nanoparticles (NPs) but also modifies the surface of the NPs by passivating the defect states and the dangling bonds. Also the polymer chains act as linkers and helps in achieving the extended framework of NPs in polymer matrix [4,5].…”