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<p>This study presents a novel, eco-friendly method for synthesizing silver oxide nanoparticles (Ag₂O NPs) using Saptharasayana, a polyherbal extract derived from seven medicinal plants, as a natural reducing and stabilizing agent. The green synthesis yielded stable Ag₂O NPs with a monoclinic crystalline phase (JCPDS No. 41–1104) and average crystallite size of 25–28&#xa0;nm (XRD). FTIR confirmed Ag–O bonding, SEM revealed irregular morphology, and EDX showed high elemental purity (Ag: 83%, O: 16.85%). The Ag₂O NPs demonstrated excellent photocatalytic degradation of methylene blue under visible light and showed promising antibacterial and corrosion inhibition performance. Topological indices such as Wiener, Zagreb, and Randić were employed to analyze molecular topology and establish correlations with experimental properties. This work underscores the potential of green-synthesized Ag₂O NPs for multifunctional environmental and biomedical applications.</p> Graphical Abstract <p></p>

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Exploring Topological Indices and Performance of Bio-Synthesized Ag₂O Nanoparticles via Graph Theory

  • 期刊论文

  • 发表日期：

    2026年2月2日

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  • Mahadeva Swamy M,
  • Vijendra Kumar N,
  • Srilatha Rao,
  • Prashanth GK,
  • Prashanth B,
  • Shilpa Patil,
  • Ramith Ramu,
  • H. S. Lalithamba,
  • K. V. Rashmi,
  • Surendra B.S,
  • B. Y. Sathish Kumar

摘要

This study presents a novel, eco-friendly method for synthesizing silver oxide nanoparticles (Ag₂O NPs) using Saptharasayana, a polyherbal extract derived from seven medicinal plants, as a natural reducing and stabilizing agent. The green synthesis yielded stable Ag₂O NPs with a monoclinic crystalline phase (JCPDS No. 41–1104) and average crystallite size of 25–28 nm (XRD). FTIR confirmed Ag–O bonding, SEM revealed irregular morphology, and EDX showed high elemental purity (Ag: 83%, O: 16.85%). The Ag₂O NPs demonstrated excellent photocatalytic degradation of methylene blue under visible light and showed promising antibacterial and corrosion inhibition performance. Topological indices such as Wiener, Zagreb, and Randić were employed to analyze molecular topology and establish correlations with experimental properties. This work underscores the potential of green-synthesized Ag₂O NPs for multifunctional environmental and biomedical applications.

Graphical Abstract