Spectroscopic characterization and high antibacterial activity of silver nanoparticles functionalized Alpaca fibers

Authors

  • H. Félix-Quintero Instituto de Física UNAM https://orcid.org/0000-0002-1733-5451
  • S. R. Jáuregui-Rosas Universidad Nacional de Trujillo
  • F. V. Samanamud-Moreno Universidad Nacional de Trujillo
  • V. Montero-Del Aguila Universidad Nacional de Trujillo
  • G. G. Zavaleta-Espejo Universidad Nacional de Trujillo
  • J. A. Saldaña-Jiménez Universidad Nacional de Trujillo
  • E. V. Mejía-Uriarte ICAT-UNAM
  • C. M. Yee-Rendon Universidad Autónoma de Sinaloa

DOI:

https://doi.org/10.31349/RevMexFis.71.061602

Keywords:

E Coli, SERS Effect, Alpaca, Silver Nanoparticle

Abstract

Using a simple chemical solution synthesis method, silver nanoparticle-functionalized alpaca fibers were prepared. Special attention was paid to three natural colors of alpaca fibers: white, brown, and black, for the study of absorbance, excitation, emission, Raman, and FTIR spectra. The alpaca fibers at higher silver concentrations exhibited an efficient SERS effect on the melanin molecule, with two bands centered at 1568 and 1336 cm⁻¹. The first band originated from the in-plane stretching of the aromatic rings, and the latter from the linear stretching of the C=C bonds within the rings. This molecule increases antibacterial capacity by enhancing the presence of Ag+ ions. The fibers treated with silver showed excellent antibacterial activity against Escherichia coli ATCC 25922.

Author Biography

H. Félix-Quintero, Instituto de Física UNAM

Departamento de estado sólido - Ayudante de Investigador

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Published

2025-11-01

How to Cite

[1]
H. A. Félix Quintero, “Spectroscopic characterization and high antibacterial activity of silver nanoparticles functionalized Alpaca fibers”, Rev. Mex. Fís., vol. 71, no. 6 Nov-Dec, pp. 061602 1–, Nov. 2025.

Issue

Vol. 71 No. 6 Nov-Dec (2025): Revista Mexicana de Física

Section

16 Solid State Physics

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Copyright (c) 2025 H. Félix-Quintero, S. R. Jáuregui-Rosas, F. V. Samanamud-Moreno, V. Montero-Del Aguila, G. G. Zavaleta-Espejo, J. A. Saldaña-Jiménez, E. V. Mejía-Uriarte, C. M. Yee-Rendon

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