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<p>This work introduces a low-cost and straightforward approach for fabricating metal nanoparticle-based catalysts using chitosan-coated cellulose tissue (CS-CTP) as a flexible support. Metal ions (Ni and Co) were adsorbed onto the biopolymer-coated squares and subsequently reduced to their metallic state via sodium borohydride treatment. Structural and functional characterization techniques, including Fourier transform infrared (FTIR) and scanning electron microscopy (SEM), confirmed the successful nanoparticle deposition and interaction with the polymer matrix, highlighting the composite’s structural integrity and potential for catalysis. The as-prepared materials were efficient catalysts for hydrogen evolution. The influence of key operational variables, including metal content, NaBH<sub>4</sub> concentration, temperature, and catalyst reusability, was thoroughly examined. Among the tested systems, Ni-loaded chitosan-coated cellulose tissue paper (Ni@CS-CTP) exhibited remarkable hydrogen production efficiency, achieving up to 420&#xa0;mL of H<sub>2</sub> within 30&#xa0;min using 10&#xa0;mg / 10&#xa0;mL in methanol–NaBH<sub>4</sub> solution. Additionally, the same catalyst was tested for environmental remediation by targeting Congo red dye, achieving complete reduction in only 7&#xa0;min. Notably, the catalyst maintained high performance across five cycles, demonstrating its practical potential in green energy production and water treatment technologies.</p> Graphical Abstract <p></p>

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Eco-friendly nanocatalysts: chitosan-cellulose supported metallic nanoparticles for wastewater remediation and hydrogen synthesis

  • 期刊论文

  • 发表日期：

    2026年5月18日

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  • Fayaz Ali,
  • Nusrat Shaheen,
  • Wajahat Sajjad,
  • Tanzeela Fazal,
  • Javed Ali Khan

摘要

This work introduces a low-cost and straightforward approach for fabricating metal nanoparticle-based catalysts using chitosan-coated cellulose tissue (CS-CTP) as a flexible support. Metal ions (Ni and Co) were adsorbed onto the biopolymer-coated squares and subsequently reduced to their metallic state via sodium borohydride treatment. Structural and functional characterization techniques, including Fourier transform infrared (FTIR) and scanning electron microscopy (SEM), confirmed the successful nanoparticle deposition and interaction with the polymer matrix, highlighting the composite’s structural integrity and potential for catalysis. The as-prepared materials were efficient catalysts for hydrogen evolution. The influence of key operational variables, including metal content, NaBH4 concentration, temperature, and catalyst reusability, was thoroughly examined. Among the tested systems, Ni-loaded chitosan-coated cellulose tissue paper (Ni@CS-CTP) exhibited remarkable hydrogen production efficiency, achieving up to 420 mL of H2 within 30 min using 10 mg / 10 mL in methanol–NaBH4 solution. Additionally, the same catalyst was tested for environmental remediation by targeting Congo red dye, achieving complete reduction in only 7 min. Notably, the catalyst maintained high performance across five cycles, demonstrating its practical potential in green energy production and water treatment technologies.

Graphical Abstract