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. Image 1010 • XRD revealed the crystallite sizes of pure and Ni -Co 3 O 4 nanostructure. • FT-IR revealed the functional groups and formation of Ni-Co 3 O 4 nano particles. • TEM morphology Ni-Co 3 O 4 conformed spherical and cubic shape particles. • UV-vis NIR spectral analysis shows optical band gap value decreases E g = 5.57 eV to 3.71 eV due to doping of Ni. • Antibacterial activities shows better activity of 20 wt% Nickel doped cobalt oxide nano particles inhibit growth suitable for nano antibiotic application. [ABSTRACT FROM AUTHOR]