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A new green method for the synthesis of silver nanoparticles and their antibacterial activities against gram-positive and gram-negative bacteria
Journal of the Chinese Chemical Society (2019)
  • Annisa Nurul Aini, Institut Teknologi Sepuluh Nopember
  • Dunia Abdulaziz Al Farraj, King Saud University
  • Endarko Endarko, Institut Teknologi Sepuluh Nopember
  • Agus Rubiyanto, Institut Teknologi Sepuluh Nopember
  • Hadi Nur, University Technology Malaysia
  • Manal Mohammed Al Khulaifi, King Saud University
  • Tony Hadibarata, Curtin University of Technology
  • Achmad Syafiuddin, University Technology Malaysia
Abstract
This study aims to evaluate the capability of Ageratum conyzoides and Mikania micrantha extracts to synthesize silver nanoparticles (AgNPs) and their antibacterial capability against gram-positive and gram-negative bacteria. Several properties of the synthesized AgNPs, including plasmonic, biomolecule bonding, shape, size, and antibacterial, were investigated. Ultraviolet–visible (UV–vis) spectroscopy was employed for characterizing their plasmonic properties. Functional groups on the produced AgNPs were investigated by Fourier-transform infrared (FT-IR) spectroscopy. The size and shape of the AgNPs were identified using the field-emission scanning electron microscopy (FESEM). Inhibition zone measurement was carried out for evaluating the antibacterial capability. This study showed that the extracts of A. conyzoides and M. micrantha were able reducing agents as evidenced by the formation of the spherical AgNPs. UV–vis spectroscopy, FT-IR spectroscopy, and FESEM confirmed the physicochemical characteristics of AgNPs. AgNPs that were synthesized using M. micrantha were slightly smaller than those produced using A. conyzoides. In general, the present work establishes that the synthesized AgNPs have antibacterial capability depending on their size and synthesis procedure.
Keywords
  • Ageratum conyzoides,
  • Mikania micrantha,
  • silver nanoparticles
Publication Date
2019
Citation Information
Annisa Nurul Aini, Dunia Abdulaziz Al Farraj, Endarko Endarko, Agus Rubiyanto, et al.. "A new green method for the synthesis of silver nanoparticles and their antibacterial activities against gram-positive and gram-negative bacteria" Journal of the Chinese Chemical Society Vol. in press (2019)
Available at: http://works.bepress.com/hadi_nur/214/