Synthesis and characterization of antibacterial activities nickel doped cobalt oxide nano particles

In this paper, synthesis of pure cobalt oxide and Ni-doped cobalt oxide nano particles by microwave irradiation method and their characterization was analyzed and reported. These nano particles were analyzed by powder X-ray diffraction, Fourier transform infrared spectroscopy, high resolution scanning electron microscopy (HRSEM) and energy dispersive spectrum (EDS), transmission electron microscopy (TEM). The powder X-ray diffraction pattern showed the cubic phase structure with crystalline size of 36 nm, 25 nm, 17 nm, 26 nm. It is also confirmed by TEM morphological analysis. UV-vis NIR spectral analysis shows optical band gap decreases and shifted from E-g (=)5.57 eV-3.71 eV due to doping of Ni. Fluorescence spectrum shows emission wavelength at 625 nm that indicates a strong red shift. The antibacterial activity of the samples infers that among all the samples the 20% nickel doped cobalt oxide nano particles possess better activity.