Biosynthesis, characterization and photocatalytic activity of silver nanoparticles produced from AgNO3 solution using aqueous extract of Ocimum bacilicum L. leaf as the reducing agent
Department of Chemistry, The University of Da Nang - University of Science and Education, Da Nang City, Viet Nam.
Research Article
GSC Advanced Research and Reviews, 2023, 14(01), 151–158.
Article DOI: 10.30574/gscarr.2023.14.1.0033
Publication history:
Received on 13 December 2022; revised on 24 January 2023; accepted on 26 January 2023
Abstract:
The paper presents a simple and eco-friendly, green synthesis method of silver nanoparticles (AgNPs) from AgNO3 solution using aqueous extract of Ocimum basilicum L. leaf as the reducing agent. The influence of some factors such as the volume ratio of Ocimum basilicum L. leaf extract/ AgNO3 solution, pH, temperature to the synthesis of silver nanoparticles was investigated. The formation of AgNPs was confirmed by UV-Vis spectroscopy. The morphology and crystalline phase of AgNPs were determined from transmission electron microscopy (TEM), energy dispersive X-ray (EDX) and X-ray diffraction (XRD) spectra. The results showed that the reaction process was rapid for the formation of stable AgNPs, colorless AgNO3 solution changes to brown-yellow after adding aqueous extract of Ocimum basilicum L. leaf. The obtained AgNPs were spherical with different average sizes of 6.5 nm - 12.9 nm and have lattice planes of silver. The photocatalytic activity of the synthesized silver nanoparticles was examined by degradation of methylene blue under sunlight irradiation
Keywords:
Silver nanoparticles; Ocimum basilicum L. leaf; Biosynthesis; Plant extract
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