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The biosynthesis of nickel oxide nanoparticles using watermelon rind extract and their biophysical effects on the germination of Vigna radiata seeds at various concentrations
1 Department of Chemistry, University of Allahabad, Prayagraj, U.P., India -211002.
2 Plant Physiology Laboratory, Department of Botony, University of Allahabad, Prayagraj, U.P., India - 211002.
Research Article
International Journal of Science and Research Archive, 2022, 07(02), 245-254.
Article DOI: 10.30574/ijsra.2022.7.2.0271
Publication history:
Received on 15 October 2022; revised on 24 November 2022; accepted on 26 November 2022
Abstract:
Unique and bio-inspired synthesis of nickel oxide nanoparticles by using an innocuous and ecofriendly waste material that is watermelon rind. In the reaction, watermelon rind recycled and used its extract as a solvent which act as a reductant for a synthesis of nickel oxide nanoparticle. The synthesized NiO NPs were analyzed by using X-ray Diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR) and UV-Vis spectroscopy. FTIR peak at 745 cm-1 and 671 cm-1 indicated that the formation of Ni-O bond. A prominent peak of UV-Vis spectra at 283 nm and band gap, calculated with the help of UV data, was ~3.3 eV. The obtained PXRD pattern and JCPDS data suggested the formation of nickel oxide nanoparticle and the average crystallite size calculated by Scherrer’s equation in between 30 to 150 nm. The average grain size of NiO NPs perceived from TEM images was 46.55 nm and polygonal barrel shape particles. Since, a simple, straightforward, pollutant-free, and economical technique for the synthesis of nickel oxide nanoparticles. However, the above synthesized nickel oxide nanoparticles have been explored for biophysical parameter vis. radicle length, plumule length and germination percentage on a Vigna radiata (moong) seed by the treatment of some concentration i.e. 25 ppm, 50 ppm, 100 ppm and 200 ppm in germination processes. At a low concentration of 25 ppm, a beneficial improvement in the germination process of Vigna radiata seed was observed.
Keywords:
Watermelon rind extract (WRE); Biophysical activity; FTIR; XRD and germination
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