Structural and optical analysis of Fe doped NiO nanoparticles synthesized by chemical precipitation route. (October 2018)

• Record Type: Journal Article
• Authors: Patel, Kiran N.; Deshpande, M.P.; Gujarati, Vivek P.; Pandya, Swati; Sathe, Vasant; Chaki, S.H.
• Is Part Of: Materials research bulletin. Volume 106(2018)
• Page Start: 187
• Page End: 196
• Publication Date: 2018-10
• Subjects: Ni1-xFexO -- X–ray diffraction -- Raman spectroscopy -- PL spectroscopy; Materials -- Periodicals; Crystal growth -- Periodicals; Matériaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Crystal growth; Materials; Periodicals; 620.11
• DOI: 10.1016/j.materresbull.2018.06.003
• Languages: English
• ISSNs: 0025-5408

Abstract

Highlights: The Fe doped NiO nanoparticles were synthesized by chemical precipitation route. XRD analysis reveals cubic rock-salt fcc structure of the synthesized nanoparticles. The Ni-O and Fe-O bonding were confirmed through FTIR spectroscopy. Existence of nickel or interstitial oxygen vacancies indicates p-type nature of nanoparticles. Abstract: The Ni1-x Fex O (x = 0.00, 0.02, 0.04 and 0.06) nanoparticles are synthesized by chemical precipitation route using polyvinyl-pyrrolidone (PVP) and nitrate metal salts. The results of thermogravimetric analysis (TGA) of the synthesized dried hydroxide powders showed that thermal decomposition occurs up to 500 °C so as to form pure Ni1-x Fex O. Therefore, all synthesized samples were calcined at 500 °C for 4 h and then used for further characterization. Energy dispersive X-ray spectroscopy (EDS) of all the samples showed the presence of Ni, O and Fe without any other impurities. From X-ray diffraction (XRD) and transmission electron microscopy (TEM) we could prove that the samples are polycrystalline in nature and are in single phase. The different vibrational modes in Ni1-x Fex O (x = 0.00, 0.02, 0.04 and 0.06) nanoparticles were studied by Raman spectroscopy and Fourier transform infrared spectroscopy (FTIR). Further, we analyzed the optical response from ultraviolet-visible spectra and Photoluminescence (PL) spectra.