Green Synthesis of Gold Nanoparticles using Pimenta dioica Leaves Aqueous Extract and Their Application as Photocatalyst, Antioxidant, and Antibacterial Agents
| Autor: | Karim Theledi, Adewale Fadaka, Olukemi Aluko, Saartjie Awawu |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Absorption spectroscopy
Reducing agent Nanoparticle 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Catalysis chemistry.chemical_compound chemistry Colloidal gold Photocatalysis Fourier transform infrared spectroscopy 0210 nano-technology Methylene blue Nuclear chemistry |
| Zdroj: | Journal of Multidisciplinary Applied Natural Science. 1:78-88 |
| ISSN: | 2774-3047 |
| DOI: | 10.47352/jmans.v1i2.81 |
| Popis: | Green synthesis of gold nanoparticles (AuNPs) is of particular interest due to their catalytic, antioxidant, and antibacterial properties. In this study, the aqueous extract of Pimenta dioica leaves was used to synthesize AuNPs and the effective parameters were investigated. The prepared AuNPs were characterized by various techniques including UV–Vis absorption spectroscopy, Fourier Transform Infrared (FTIR) spectroscopy, Transmission Electron Microscopy (TEM), and X-ray diffractometer (XRD). The reduction and stabilization effect of the plant extract to fabricate AuNPs were explained by FTIR analysis. TEM imaging confirmed the formation of spherical-shaped AuNPs. The catalytic activity of synthesized nanoparticles was evaluated in the degradation of a Methylene Blue dye in the presence of NaBH4 as reducing agent and achieved after only two minutes. The AuNPs provided high antioxidant ability. In addition, the synthesized AuNPs showed a significant inhibitory effect against both gram-positive and gram-negative bacteria, where the zone of inhibition of 4 and 9 mm were obtained for synthesized AuNPs against S. aureus and E. coli, respectively. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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