Bio-inspired Nickel Oxides Nanoscale Synthesis by using Peel of Citrus Sinensis
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MRS Advances © 2020 Materials Research Society DOI: 10.1557/adv.2020.227
Bio-inspired Nickel Oxides Nanoscale Synthesis by using Peel of Citrus Sinensis A. Fall 1, 2,3, N. Mayedwa1,2, R. Bucher 1,2, B. D. Ngom 3, M. Maaza1,2 1Nanosciences African Network (NANOAFNET), iThemba LABS-National Research Foundation, Old Faure road,7129, Somerset West, South Africa
2UNESCO-UNISA Africa Chair in Nanosciences/Nanotechnology, College of Graduate Studies, University of South Africa (UNISA), Muckleneuk ridge, P.O. Box 392, Pretoria-South Africa
3Photonics and Nano-Fabrication Laboratory, Faculty of Science and Technics, University Cheikh Anta Diop of Dakar (UCAD) B.P. 5005 Dakar-Fann Dakar, Senegal
Abstract This contribution provides the synthesis and characterization of nickel oxide nanoparticles (NiO NPs) which were prepared by green synthesis method using natural extract oranges peel skin (Peel Citrus Sinensis) as an effective bio-oxidizing/bioreducing agent. The effect of different calcination temperatures on the size of the NiO NPs was investigated. The prepared nanoparticles were characterized by various techniques such as X-rays diffraction (XRD) results indicated that all the samples have a face-centered cubic (FCC) structure and confirmed the presence of high degree of crystallinity nature NiO NPs. The functional group composition of NiO NPs were investigated by using attenuated total reflection-Fourier transform infrared (ART-FTIR), Photoluminescence (PL), and Scanning electron microscopy (SEM). INTRODUCTION Nanoparticles of transition metal oxides have been investigated by several workers in the last few years. Besides the magnetic oxide nanomaterials have been the particular interest subjected to researches due to their distinctive physical and chemical properties [1]. Nickel oxide (NiO) is one of the important transition metals oxides that possesses interesting optical, electronic and magnetic properties with
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novel morphologies as a result of large number of spins and surface atoms[2]. Thus, it would be of value to know if the nanoparticles(NPs)of antiferromagnetic oxides generally show evidence for ferromagnetic interaction at low temperatures, a behavior that has been reported by a few workers [3]. Due to their small size, nanoparticles exhibit novel material properties that are significantly different from those of their bulk counterparts. NiO NPs with a uniform size and well dispersion is desirable for many applications in designing ceramic, magnetic, electro chromic and heterogeneous catalytic materials [4]. There is considerable scientific and technological interest in developing nanostructured metal oxides with p-type semiconductivity. There are, however, relatively few metal oxides that tend to be ptype[5]. NiO NPs is an p-type semiconductor of which the resistivity can be lowere
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