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<p>Biosynthesis of metal nanoparticles has been proposed as an environmentally friendly alternative to chemical and physical methods, as they do not produce more toxic waste than those required for this synthesis. The phytochemicals available from each plant are necessary to carry out the chemical reduction. In this work, Ag and Au nanoparticles were synthesized using plant extracts from Lavender and Mexican Agave, both species associated with antimicrobial properties. The nanoparticle size determined by TEM is between 10 and 25&#xa0;nm, only the AuNPs sample obtained with Mexican Agave showed a larger average size, which had no effect on the degradation test. UV–Vis shows that AuNPs produce a smaller plasmon than AgNPs. The degradation capacity of metal nanoparticles depends on the contact time a longer time results in higher dye degradation for each nanoparticle. The leaves of the Mexican Agave produced Au/Ag/NPs with a degradation capacity superior to that of Lavender.</p> Graphical abstract <p></p>

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Degradation of a dye using silver and gold nanoparticles synthesized with plant extract

  • 期刊论文

  • 发表日期：

    2026年1月20日

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  • Mariela Vega,
  • Ernesto Rivera,
  • Francisco Javier Sanchez-Ruiz,
  • Carlos Alfonso García-Ibarra,
  • Sonia Martinez-Gallegos

摘要

Biosynthesis of metal nanoparticles has been proposed as an environmentally friendly alternative to chemical and physical methods, as they do not produce more toxic waste than those required for this synthesis. The phytochemicals available from each plant are necessary to carry out the chemical reduction. In this work, Ag and Au nanoparticles were synthesized using plant extracts from Lavender and Mexican Agave, both species associated with antimicrobial properties. The nanoparticle size determined by TEM is between 10 and 25 nm, only the AuNPs sample obtained with Mexican Agave showed a larger average size, which had no effect on the degradation test. UV–Vis shows that AuNPs produce a smaller plasmon than AgNPs. The degradation capacity of metal nanoparticles depends on the contact time a longer time results in higher dye degradation for each nanoparticle. The leaves of the Mexican Agave produced Au/Ag/NPs with a degradation capacity superior to that of Lavender.

Graphical abstract