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Abstract

Evolutions in Mechanical Engineering

Synthesis of Differently Shaped Nontoxic AgNPs Stabilized by PVP and TSC

  • Open or CloseLívia Mačák1*, Oksana Velgosova1 and Elena Čižmárová2

    1Institute of Materials and Quality Engineering, Faculty of Materials Metallurgy and Recycling, Technical University of Košice, Letná, Slovakia

    2Department of Materials Engineering, Faculty of Mechanical Engineering, Czech Technical University in Prague, Czech Republic

    *Corresponding author:Lívia Mačák, Institute of Materials and Quality Engineering, Faculty of Materials Metallurgy and Recycling, Technical University of Košice, Letná, Slovakia

Submission: March 26, 2024;Published: April 08, 2024

DOI: 10.31031/EME.2024.05.000612

ISSN: 2640-9690
Volume5 Issu3

Abstract

Adjusting the shape of nanoparticles is a fundamental issue in achieving the desired properties. We have proven that it is possible to synthesize the nanoparticles with the desired shapes (spherical, triangular, and colloids with a mixture of shapes) by a suitable combination of reagents. Subsequently, the size and shape of the nanoparticles affect the color of the solution. UV-VIS spectroscopy was used to evaluate the colloidal solutions, and Transmission Electron Microscopy (TEM) to indicate the shape and size of the nanoparticles. Combination of electrostatic repulsion (TCS) and steric stabilization (PVP) secure stability of nanoparticles and act also as good caping agents. AgNPs show very low antimicrobial/antibiofilm activity against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) bacteria and one-cell algae Chlorella kessleri (Ch. kessleri).

Keywords:Silver nanoparticles; Chemical synthesis; UV-VIS spectroscopy; TEM; Toxicity

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