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<p>pH-sensitive biopolymeric hydrogels with silver nanoparticles, called Silver nanocomposite hydrogels (SNCH) with intriguing characteristics have a high potential for environmental applications. The current study focuses on the <i>in-situ</i> synthesis of cost-effective almond gum-based silver nanocomposite hydrogels. The generated nanocomposite hydrogels demonstrated significant pH-sensitive behavior, swelling, and found to be nontoxic and environmentally friendly. The swelling performance was substantially higher in alkaline medium than in acidic environments. The bio polymeric nanocomposite hydrogel was characterized using FT-IR, SEM, and XRD investigations, and their properties were compared to those of the plain bio-polymeric hydrogel. The silver nanocomposite hydrogels had outstanding antibacterial qualities against both gram positive (<i>S. aureus</i>) and gram negative bacteria (<i>E.coli</i>). These nanocomposite have the ability to effectively remove malachite green dye&#xa0;molecules from aqueous solutions. Malachite green dye adsorption data were analyzed using several adsorption kinetics and isotherm models. The minimum&#xa0;concentration of silver demonstrates effective antibacterial and dye elimination capabilities. Adsorption tests revealed that the process was extremely rapid and physical in nature. Similarly, it follows pseudo first order kinetics with a strong regression coefficient, R<sup>2</sup> = 0.99. Thus, material of the present investigation serves as a valuable tool for green and clean world.</p>

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In-situ Synthesis of Silver Nanoparticles by Almond Gum/Citric Acid/PVA pH Sensitive Bio Polymeric Nano Composites Hydrogels with Excellent Antibacterial and Cationic Dye Removal Applications

  • 期刊论文

  • 发表日期：

    2026年7月20日

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  • Harini S,
  • Nikila S,
  • Princy Sowmya R,
  • S. Guhanathan

摘要

pH-sensitive biopolymeric hydrogels with silver nanoparticles, called Silver nanocomposite hydrogels (SNCH) with intriguing characteristics have a high potential for environmental applications. The current study focuses on the in-situ synthesis of cost-effective almond gum-based silver nanocomposite hydrogels. The generated nanocomposite hydrogels demonstrated significant pH-sensitive behavior, swelling, and found to be nontoxic and environmentally friendly. The swelling performance was substantially higher in alkaline medium than in acidic environments. The bio polymeric nanocomposite hydrogel was characterized using FT-IR, SEM, and XRD investigations, and their properties were compared to those of the plain bio-polymeric hydrogel. The silver nanocomposite hydrogels had outstanding antibacterial qualities against both gram positive (S. aureus) and gram negative bacteria (E.coli). These nanocomposite have the ability to effectively remove malachite green dye molecules from aqueous solutions. Malachite green dye adsorption data were analyzed using several adsorption kinetics and isotherm models. The minimum concentration of silver demonstrates effective antibacterial and dye elimination capabilities. Adsorption tests revealed that the process was extremely rapid and physical in nature. Similarly, it follows pseudo first order kinetics with a strong regression coefficient, R2 = 0.99. Thus, material of the present investigation serves as a valuable tool for green and clean world.