Affiliation:
1. Diyala Directorate General of Education
Abstract
This study used Hibiscus sabdariffa flowers to prepare and characterise nickel oxide nanoparticles that are non-toxic and environmentally advantageous (green synthesis). After two hours of heat treatment at 600 °C, XRD was employed to validate the cubic crystal structure of NiO-NPs. The crystal plane (200) corresponded to the optimal peak on the XRD, With an average crystalline size, as per Williamson-Hall's formula, is 46.26 nm, while as per Scherrer's formula, it is 24.40 nm. At 524, 420, and 468 cm-1, the FT-IR spectrum revealed a Ni-O vibration band. Throughout the surface microscopic analysis, Field-Emission Scanning Electron Microscopy (FE-SEM) revealed smooth, cylindrical rod-like crystals. As per the UV-Vis spectral curve, NiO-NPs had a direct bandgap (Eg) of 2.91 eV. NiO-NPs nanoparticles were shown to be more effective against gram-negative bacteria in terms of biological activities. P. aeruginosa was significantly more severely harmed than S. aureus.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference21 articles.
1. Effective reduction in the nanoparticle sizes of NiO obtained via the pyrolysis of nickel malonate precursor modified using oleylamine surfactant;Lontio Fomekong;Journal of Solid State Chemistry
2. Toward the blue energy dream by triboelectric nanogenerator networks;Wang;Nano Energy
3. Sageretia thea (Osbeck.) modulated biosynthesis of NiO nanoparticles and their in vitro pharmacognostic, antioxidant and cytotoxic potential;Khalil;Artificial Cells, Nanomedicine, and Biotechnology,2017
4. Synthesis of Nano-Spherical Nickel by Templating Hibiscus Flower Petals;Kar;American Journal of Nanoscience and Nanotechnology
5. C. Okereke, F. Iroka, M. Chukwuma, "Phytochemical analysis and medicinal uses of Hibiscus sabdariffa", International journal of Herbal medicine, vol. 2, no. 6, pp.16-19, 2015.