Akinsiku, A.A. and Ajanaku, K. O. and Adekoya, J. A. and Dare, E.O (2015) Green Synthesis, Characterization of Silver Nanoparticles Using Canna indica and Senna occidental is Leaf Extracts. In: 2nd Covenant University Conference on African Development Issues (CU-ICADI), 11th - 13th May, 2015, Africa Leadership Development Center, Covenant University, Ota, Nigeria..
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Abstract
Green synthesis is now considered an alternative to chemical and physical synthetic procedures for nanoparticles by using sustainable and eco-friendly materials instead of harsh and toxic chemicals. This research aimed at synthesizing silver nanoparticles using locally- sourced leaf extracts of Canna indica and Senna occidentalis. The syntheses were monitored with double beam UV-Visible spectrophotometer. Aliquot samples were taken at time intervals (5, 10, 15, 20, 30 minutes) during bioreduction. Colour changes were observed in the process of Ostwald ripening in both syntheses. Again, excitation of surface plasmon resonance was obvious in the nanosilver formed by the biomass. Red shifting indicating particle size increase ( 400-430 nm), and blue shifting (350-380 nm) were evident in Canna indica and Senna occidentalis silver nanoparticles respectively. Energy dispersed analysis by Xray (EDAX) indicated silver oxide peaks, and scanning electron microscopy (SEM) showed an amorphous phase of the nanoparticles as further proofs of nanosilver formation from both extracts.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Uncontrolled Keywords: | Green synthesis, nanoparticles, nanosilver, Canna indica, Senna occidentalis, SEM, EDAX |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Chemistry |
| Depositing User: | Mrs Patricia Nwokealisi |
| Date Deposited: | 24 Jun 2015 08:48 |
| Last Modified: | 24 Jun 2015 08:48 |
| URI: | http://eprints.covenantuniversity.edu.ng/id/eprint/5321 |
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