Open Access Article

Ag Nanoparticles Obtained by Green Synthesis as Bactericidal Agents in Water-Based Paints

Authors

  • Sandra Gabriela Gomez de Saravia

    Centro de Investigación y Desarrollo en Tecnología de Pinturas y Recubrimientos, La Plata 1900, Argentina
    Instituto de Ciencias de la Salud, Universidad Nacional Arturo Jauretche, Florencio Varela 1888, Argentina
  • Silvia Elena Rastelli

    Centro de Investigación y Desarrollo en Tecnología de Pinturas y Recubrimientos, La Plata 1900, Argentina
    Facultad de Ciencias Naturales, Universidad Nacional de La Plata, La Plata 1900, Argentina
  • Erasmo Gamez Espinosa

    Centro de Investigación y Desarrollo en Tecnología de Pinturas y Recubrimientos, La Plata 1900, Argentina
    Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata 1900, Argentina
  • Natalia Bellotti

    Centro de Investigación y Desarrollo en Tecnología de Pinturas y Recubrimientos, La Plata 1900, Argentina
    Facultad de Ciencias Naturales, Universidad Nacional de La Plata, La Plata 1900, Argentina
  • Cecilia Deya

    Centro de Investigación y Desarrollo en Tecnología de Pinturas y Recubrimientos, La Plata 1900, Argentina
    Facultad de Ingeniería, Universidad Nacional de La Plata, La Plata 1900, Argentina
  • Marisa Viera

    Centro de Investigación y Desarrollo en Tecnología de Pinturas y Recubrimientos, La Plata 1900, Argentina
    Facultad de Ingeniería, Universidad Nacional de La Plata, La Plata 1900, Argentina

DOI:

https://doi.org/10.55121/nefm.v5i1.1265
Received: 14 March 2026 | Revised: 18 April 2026 | Accepted: 26 April 2026 | Published Online: 3 May 2026

Abstract

To control the proliferation of microorganisms and its associated risks, protective surface coatings are being developed. Among the most promising solutions is the incorporation of silver nanoparticles (AgNPs) into paint formulations. Traditional physical and chemical nanoparticles synthesis pose health and environmental risks. The concept of “green nanoparticles” refers to the synthesis of nanoparticles using environmentally benign routes. The aim of this work was to obtain silver nanoparticles (AgNPs) using a green synthesis technique, incorporate them into a polymeric coating, and evaluate their effectiveness as a potential hygienic paint against both gram-positive and gram-negative bacteria. AgNPs were obtained by adding Schinopsis balansae (TS) or Caesalpinia spinosa (TC) tannin solution to an aqueous solution of AgNO3. The AgNPs were characterized by UV-Visible spectroscopy, Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy, scanning electron microscopy, and energy dispersive X-Ray spectroscopy. A polymeric coating was formulated with nanoparticles. To evaluate the antibacterial coating efficiency, the modified ISO 22196 method was applied. The concentration and origin of tannin are factors that influence the size and polydispersity of the NPs; TS-AgNPs exhibited higher polydispersity than TC-AgNPs. Coatings incorporating TC-AgNPs exhibited the highest antibacterial efficacy, inhibiting all bacterial strains except Bacillus cereus. These results support the feasibility of integrating eco-friendly AgNPs into polymeric coatings for biodeterioration control in indoor environments.

Keywords

Environmentally Friendly Synthesis, Silver Nanoparticles, Antibacterial Activity, Coatings, Biodeterioration, Hygienic Paint

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How to Cite

Gomez de Saravia, S. G., Rastelli, S. E., Gamez Espinosa, E., Bellotti, N., Deya, C., & Viera, M. (2026). Ag Nanoparticles Obtained by Green Synthesis as Bactericidal Agents in Water-Based Paints. New Environmentally-Friendly Materials, 5(1), 40–51. https://doi.org/10.55121/nefm.v5i1.1265

Issue

Vol. 5 No. 1 (May 2026): In Progress

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Copyright (c) 2026 Sandra Gabriela Gomez de Saravia, Silvia Elena Rastelli, Erasmo Gamez Espinosa, Natalia Bellotti, Cecilia Deya, Marisa Viera

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This work is licensed under a Creative Commons Attribution 4.0 International License.