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<p>This study reports the development of an efficient and structurally robust functional hybrid hydrogel composed of a Poly(acrylamide-<i>co</i>-acrylic acid) matrix, reinforced with silver-decorated recycled nano-tungsten oxide (Ag-WO<sub>3</sub>) composites. To ensure structural longevity and eliminate secondary pollution risks, the recycled nanoparticles derived from industrial scrap were modified via an eco-friendly photo-reduction method and covalently tethered to the polymer backbone using a vinyltrimethoxysilane coupling agent. FT-IR analysis confirmed successful interfacial chemical grafting, which acted as a nano-skeleton reinforcement. Consequently, a dramatic increase in mechanical robustness was achieved, with surface hardness rising from 43 Shore A for the pristine hydrogel to 80 Shore A for the dense hybrid network. Crucially, the hybrid system exhibited exceptional chemo-structural stability across a broad pH spectrum (3–11), maintaining a gel content exceeding 90% with nearly zero detectable leaching or turbidity. Functionally, the Ag-WO<sub>3</sub> integrated hydrogel serves as a potent dual-action platform for wastewater purification, achieving 86.5% photocatalytic degradation of Methylene Blue dye under UV irradiation within 60&#xa0;min, alongside an outstanding 99.98% antibacterial eradication rate against <i>Escherichia coli</i>. By transforming industrial metallurgical scrap into a high-value environmental catalyst, this research offers a sustainable, non-leaching, and scalable platform for advanced wastewater decontamination, directly contributing to the United Nations Sustainable Development Goals (SDG 6: Clean Water and Sanitation, and SDG 12: Responsible Consumption and Production).</p>

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Functional poly (acrylamide-co-acrylic acid) super hydrogels integrated with silver-decorated recycled nano tungsten oxide: a robust, leach-free for advanced wastewater decontamination

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  • 出版模式：

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  • 发表日期：

    2026年7月4日

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  • H. M. Zidan,
  • Nazir Mustapha,
  • Sally A. Eladly,
  • Dina Ezzat

摘要

This study reports the development of an efficient and structurally robust functional hybrid hydrogel composed of a Poly(acrylamide-co-acrylic acid) matrix, reinforced with silver-decorated recycled nano-tungsten oxide (Ag-WO3) composites. To ensure structural longevity and eliminate secondary pollution risks, the recycled nanoparticles derived from industrial scrap were modified via an eco-friendly photo-reduction method and covalently tethered to the polymer backbone using a vinyltrimethoxysilane coupling agent. FT-IR analysis confirmed successful interfacial chemical grafting, which acted as a nano-skeleton reinforcement. Consequently, a dramatic increase in mechanical robustness was achieved, with surface hardness rising from 43 Shore A for the pristine hydrogel to 80 Shore A for the dense hybrid network. Crucially, the hybrid system exhibited exceptional chemo-structural stability across a broad pH spectrum (3–11), maintaining a gel content exceeding 90% with nearly zero detectable leaching or turbidity. Functionally, the Ag-WO3 integrated hydrogel serves as a potent dual-action platform for wastewater purification, achieving 86.5% photocatalytic degradation of Methylene Blue dye under UV irradiation within 60 min, alongside an outstanding 99.98% antibacterial eradication rate against Escherichia coli. By transforming industrial metallurgical scrap into a high-value environmental catalyst, this research offers a sustainable, non-leaching, and scalable platform for advanced wastewater decontamination, directly contributing to the United Nations Sustainable Development Goals (SDG 6: Clean Water and Sanitation, and SDG 12: Responsible Consumption and Production).