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<p>Eggshells (ES) waste is produced in large quantities globally due to their rising consumption. The poor management of these wastes poses serious environmental risks and public health. Owing to antibacterial activity against Gram-positive bacterium <i>Staphylococcus aureus</i> (SA) and <i>Methicillin-resistant Staphylococcus aureus</i> (MRSA), eggshell (ES) derived calcite (CaCO<sub>3</sub>) fibers (CFs) and silver nanoparticles (AgNPs) encapsulated CFs (ACFs) are synthesized by sol-gel method at 80 °C. The CFs and ACFs nanocomposite revealed a fiber-based porous structural network. The CFs and ACFs possessed a uniform distribution of Ca, Mg, C, O, and Ag. The CFs and ACFs nanocomposite revealed heterogeneous chemical bonding. The ACFs revealed thermal stability at ≤636 °C and crystallite size around 85 nm. For antimicrobial assessment, the ACF nanocomposite is found to be highly effective against SA and MRSA. The experimental finding suggested that low-temperature-based ACFs have the potential to inhibit a wide range of microbial pathogens.</p> Graphical Abstract <p></p>

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Silver nanoparticles functionalized calcite fibers derived from eggshell waste: a sustainable nanocomposite for microbial applications

  • 期刊论文

  • 发表日期：

    2025年2月10日

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  • Shumaila Islam,
  • Adil Alshoaibi,
  • Nisrin Alnaim,
  • Haifa M. Al Naim

摘要

Eggshells (ES) waste is produced in large quantities globally due to their rising consumption. The poor management of these wastes poses serious environmental risks and public health. Owing to antibacterial activity against Gram-positive bacterium Staphylococcus aureus (SA) and Methicillin-resistant Staphylococcus aureus (MRSA), eggshell (ES) derived calcite (CaCO3) fibers (CFs) and silver nanoparticles (AgNPs) encapsulated CFs (ACFs) are synthesized by sol-gel method at 80 °C. The CFs and ACFs nanocomposite revealed a fiber-based porous structural network. The CFs and ACFs possessed a uniform distribution of Ca, Mg, C, O, and Ag. The CFs and ACFs nanocomposite revealed heterogeneous chemical bonding. The ACFs revealed thermal stability at ≤636 °C and crystallite size around 85 nm. For antimicrobial assessment, the ACF nanocomposite is found to be highly effective against SA and MRSA. The experimental finding suggested that low-temperature-based ACFs have the potential to inhibit a wide range of microbial pathogens.

Graphical Abstract