Biosynthesis of cobalt oxide nanoparticles using endophytic fungus Aspergillus nidulans
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Date
2018
Journal Title
Journal ISSN
Volume Title
Publisher
Academic Press
Abstract
Metallic oxide nanoparticles have profound applications in electrochemical devices, supercapacitors, biosensors and batteries. Though four fungi were isolated from Nothapodytes foetida, Aspergillus nidulans was found to be suitable for synthesis of cobalt oxide nanoparticles, as it has proficient tolerance towards metal under study. The broth containing precursor solution and organism Aspergillus nidulans had changed from pink to orange indicating the formation of nanoparticles. Characterization by x-ray diffraction analysis (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR) and energy dispersive x-ray analysis (EDX) confirmed the formation of spinel cobalt oxide nanoparticles at an average size of 20.29 nm in spherical shape with sulfur-bearing proteins acting as a capping agent for the synthesized nanoparticles. The nanoparticles could be applied in energy storage, as a specific capacitance of 389 F/g showed competence. The study was a greener attempt to synthesize cobalt oxide nanoparticles using endophytic fungus. © 2018 Elsevier Ltd
Description
Keywords
Aspergillus, Biochemistry, Biosynthesis, Cobalt compounds, Energy dispersive X ray analysis, Fourier transform infrared spectroscopy, High resolution transmission electron microscopy, Metal nanoparticles, Sulfur, Surface plasmon resonance, X ray powder diffraction, Aspergillus nidulans, Cobalt oxide nanoparticles, Electrochemical batteries, Electrochemical supercapacitor, Endophyte, Endophytic fungus, Metallic oxides, Oxide nanoparticles, Sulphur-bearing protein, Surface-plasmon resonance, Proteins, cobalt oxide nanoparticle, nanoparticle, unclassified drug, cobalt, cobalt oxide, metal nanoparticle, oxide, plant extract, biological production, endophyte, energy storage, fungus, ligand, particle size, protein, resonance, transmission electron microscopy, X-ray diffraction, Article, biosynthesis, controlled study, endophytic fungus, energy dispersive X ray spectroscopy, fungus isolation, infrared spectroscopy, metal tolerance, nonhuman, Nothapodytes foetida, plant, surface plasmon resonance, ultraviolet spectrophotometry, X ray diffraction, zeta potential, Emericella nidulans, Fungi, Cobalt, Metal Nanoparticles, Nanoparticles, Oxides, Plant Extracts, Spectroscopy, Fourier Transform Infrared, X-Ray Diffraction
Citation
Journal of Environmental Management, 2018, 218, , pp. 442-450