Abstract
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 Eg =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.
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