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<p>TiO<sub>2</sub> nanoparticles were synthesized using Cocos nucifera pollen extract through an eco-friendly green approach and evaluated for their multifunctional properties. XRD confirmed a crystallite size of 17.4 nm, while HRTEM showed particle sizes ranging from 5 to 100 nm. The biogenic TiO<sub>2</sub> NPs exhibited strong photocatalytic degradation of methylene blue, achieving 97.8% efficiency under sunlight and 98.5% under UV within 180 min. They also demonstrated significant antibacterial activity against Staphylococcus aureus (23.0 mm) and Escherichia coli (29.5 mm), along with biofilm inhibition rates of 86.57% and 70.34%, respectively. The study highlights the novelty of using Cocos nucifera pollen as a biogenic reducing agent and demonstrates the potential of the synthesized nanoparticles for wastewater treatment and antimicrobial applications.</p> Graphical abstract <p></p>

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Eco-friendly synthesis of titanium dioxide nanoparticles from Cocos nucifera for improved photocatalytic and antimicrobial applications

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年1月6日

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  • Yuvaraj Tamilselvi,
  • Kanagasabapathy Sivasubramanian,
  • Loganathan Lingeshwaran,
  • Palanivel Velmurugan,
  • Anurag Sureshbabu,
  • Vanga Dharma Teja,
  • Kishore Kumar,
  • Jeyanthi Rebecca Livingstone,
  • Anbuselvi Stalin Selvaraj,
  • Devasagaya Daisy,
  • Sivanraju Rajkumar

摘要

TiO2 nanoparticles were synthesized using Cocos nucifera pollen extract through an eco-friendly green approach and evaluated for their multifunctional properties. XRD confirmed a crystallite size of 17.4 nm, while HRTEM showed particle sizes ranging from 5 to 100 nm. The biogenic TiO2 NPs exhibited strong photocatalytic degradation of methylene blue, achieving 97.8% efficiency under sunlight and 98.5% under UV within 180 min. They also demonstrated significant antibacterial activity against Staphylococcus aureus (23.0 mm) and Escherichia coli (29.5 mm), along with biofilm inhibition rates of 86.57% and 70.34%, respectively. The study highlights the novelty of using Cocos nucifera pollen as a biogenic reducing agent and demonstrates the potential of the synthesized nanoparticles for wastewater treatment and antimicrobial applications.

Graphical abstract