About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Biological Materials Science
|
| Presentation Title |
Green Synthesized Magnesium Oxide Nanoparticles From Selected Tropical Foliage Extracts for Antibacterial and Photocatalytic Applications |
| Author(s) |
Godfrey Osatohamwen Otabor, Esther Uwidia Ikhuoria, Ikhazuagbe Hilary IFIJEN, Joshua Osaretin Onaifo |
| On-Site Speaker (Planned) |
Godfrey Osatohamwen Otabor |
| Abstract Scope |
The global economy faces serious socio-economic challenges due to environmental pollution and the proliferation of antibiotic-resistant pathogenic microorganisms. Consequently, nanomaterial partially of metallic nature have been synthesized with both catalytic and therapeutic properties to inhibit the activities of harmful bacteria and also degrade organic pollutant particularly dyes in wastewater. In this study, the antibacterial and photocatalytic potential of biogenic MgONPs using aqueous leaf extracts of agricultural biomass from Hevea brasiliensis (rubber tree), Chromolaena odorata (Siam weed), and Elaeis guineensis (African oil palm) were examined. The biochemicals present in this agricultural waste served as reducing and capping agents, thereby facilitating the synthesis of the nanoparticles. The samples were analysed using FTIR, SEM, DLS, XRD, and BET revealing nanoscale crystallinity, mesoporosity, and size distributions ranging from 44–100 nm. SWL-mediated MgONPs exhibited the smallest size, largest surface area (355.9 m˛/g), and demonstrated superior stability among the synthesized materials. Antibacterial assays against Escherichia coli and Staphylococcus aureus demonstrated strong inhibition, with Siam weed–MgONPs showing activity comparable to ciprofloxacin. Photocatalytic evaluation confirmed efficient degradation of methylene blue dye under sunlight, with maximum degradation (92.8%) and mineralization (99.1%) achieved by Siam weed–MgONPs. These findings establish valorization of underutilized tropical biomass for low-cost, sustainable synthesis of multifunctional nanomaterials applicable in wastewater treatment and antimicrobial applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Biomaterials, Nanotechnology, Magnesium |