Structural and Antibacterial Activity of Copper Oxide Nano Particles

Abstract

Nano particles of metal oxides are manufactured in the large scale because of their industrial applications. Copper Oxide is an important p-type semiconductor, has drawn increasing attention in the application of gas sensors because of low cost, excellent reactivity, high stability and non-toxicity, and also the secondary architectures composed of nanostructured building blocks have attracted significant interest in material synthesis and device fabrications. In the present investigation pure and Ni,Cd doped CuOnano particles have been prepared by co-precipitation method. The crystalline natures of the sample were also confirmed by X-ray diffraction pattern. The crystalline size of the pure and Cd,Ni doped nano particle were determined as 13 nm, 12 nm and 14 nm respectively. FT-IR spectra identify the functional group present in the molecular structure. There is a shift in the lower frequency region confirmed the presence of the dopants (Ni,Cd). The surface morphology of the prepared materials were also analysed by FE-SEM. It reveals the polycrystalline porous morphology with a nano flower structure. The small crystallites agglomerated to form nanoflowers and nano sheets. The energy gap value for pure and doped (Ni,Cd) CuO were also determined. Anti-bacterial studies shows that the zone of inhibition is high for the CuO and doped (Ni,Cd) CuOnano particle. CuO nanoparticle exhibited strong antibacterial activity against bacterial species.