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Nigella sativa L. seeds extract assisted synthesis of silver nanoparticles and their antibacterial and catalytic performance

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Abstract

In this research work, a green synthesis method of using a Nigella sativa L. seeds extract as a reductant was adopted for the silver nanoparticles (AgNP) production. The AgNP were produced using a 5 mM silver nitrate mixed with the seeds extract at 25 °C and at 60 °C. It was observed that the AgNP production rate significantly increased at high temperatures. The obtained AgNP were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) techniques. SEM depicted an average particle size (42 ± 15 nm) of synthesized AgNP. XRD results further augmented the SEM data and indicated definite crystallinic peaks for synthesized AgNP. The prepared Nigella sativa L. extract assisted AgNP (N.S./AgNP) were further used in the reduction of the MB and 4-nitroaniline dyes as well as in antibacterial studies. It was found that the AgNP successfully transformed the 4-NA and MB to their reductive compounds with high conversion rates of 0.1021 min−1 and 0.4197 min−1, respectively. The antibacterial results showed that the N.S./AgNP have good killing properties against Staphylococcus aureus, Klebsiella pneumonia and Pseudomonas aeruginosa bacteria.

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Acknowledgements

The Deanship of Scientific Research (DSR) at King Abdulaziz University, Jeddah, Saudi Arabia has funded this project, under grant no. (KEP-33-130-42). The authors, therefore, acknowledge with thanks DSR for technical and financial support.

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Correspondence to Ihsan Ullah or Mazhar Ul-Islam.

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This research does not include any studies with human participants or animals performed by any of the authors.

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Anwar, Y., Ullah, I., Al Johny, B.O. et al. Nigella sativa L. seeds extract assisted synthesis of silver nanoparticles and their antibacterial and catalytic performance. Appl Nanosci 12, 3185–3196 (2022). https://doi.org/10.1007/s13204-021-02048-3

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  • DOI: https://doi.org/10.1007/s13204-021-02048-3

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