Green synthesis of gold and silver nanoparticles using crude extract of and evaluation of their antibacterial, antioxidant and photocatalytic activities.

Journal: Frontiers in bioengineering and biotechnology
Published Date: Jan 10, 2024

Abstract

Green synthesis of metal nanoparticles (NPs) has received extensive attention over other conventional approaches due to their non-toxic nature and more biocompatibility. Herein we report gold and silver NPs (AuNPs@AV and AgNPs@AV) prepared by employing a green approach using crude extract of Jacquem. ex Stapf. The synthesized NPs were characterized using Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Energy Dispersive X-ray (EDX), X-ray Diffraction (XRD), UV/Visible spectroscopy, Fourier Transform Infrared (FTIR), X-ray Photoelectron Spectroscopy (XPS), and Zeta Potential. Morphological analysis showed spherical and triangular shapes of the NPs with average size of <100 nm. The AuNPs@AV and AgNPs@AV exhibited effective antibacterial activities, with minimum inhibitory concentrations (MICs) of 95 and 70 μg/mL against () and 90 and 65 μg/mL against (), respectively. Strong antioxidant effect of AuNPs@AV and AgNPs@AV were reported against DPPH radical and PTIO within range of IC values; 161-80 μg/ml as compared to the standard (23-11 μg/mL) respectively. Moreover, the AuNPs@AV and AgNPs@AV showed efficient photocatalytic activity and degraded 89.88% and 93.7% methylene blue (MB) dye under UV light, respectively.

Authors

  • Shahbaz Ahmad
    School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China.
  • Shujaat Ahmad
    Department of Pharmacy, Shaheed Benazir Bhutto University Sheringal, Dir Upper, Khyber Pakhtunkhwa, Pakistan.
  • Qianqian Xu
    School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China.
  • Idrees Khan
    School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, China.
  • Xiaoyu Cao
    School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China.
  • Ruimin Yang
    School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China.
  • Hai Yan
    School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China.

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