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Polymer supported metallic nanoparticles as a solid catalyst for the removal of organic pollutants

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Abstract

Nowadays, considerable attention has been gained for metal-based nanocatalysts due to their high catalytic activity. Herein, copper-cotton cellulose (Cu-CC) and metal nanoparticles supported on Cu-CC (MNPs@Cu-CC) were prepared. Zero-valent nanoparticles (NPs) of silver (Ag), and iron (Fe) were grown on Cu-CC and utilized as catalyst in few important organic reduction reactions. The prepared Cu-CC, Fe@Cu-CC and Ag@Cu-CC catalysts were utilized in catalytic reduction of nitrophenols and dyes for their evaluation. Among all the tested catalysts, Cu-CC efficiently reduced 4-nitrophenol (4-NP) and methyl orange dye (MO). The reduction rate constants of 4-NP and MO were 9.94 × 10−3 and 1.12 × 10−2 s–1, respectively. Further the catalytic activity of the more efficient Cu-CC was optimized by varying its amount, nitophenols and dyes, and NaBH4 concentrations. The stability, re-usability and loss in catalytic activity of the NPs were analyzed by the recyclability, in which the Cu-CC was utilized several times for the reduction of 4-NP and MO which suggest that the designed catalyst can be easily prepared, recovered simply by discarding the dye after completion of reaction, recyclable and have good catalytic activity.

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Acknowledgments

This project was funded by the Deanship of Scientific Research (DSR), King Abdulaziz University, Jeddah, under Grant No. (D-144–130-1440). The authors, therefore, gratefully acknowledge DSR technical and financial support.

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Correspondence to Sher Bahadar Khan.

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Khan, S.B., Khan, M.S.J., Kamal, T. et al. Polymer supported metallic nanoparticles as a solid catalyst for the removal of organic pollutants. Cellulose 27, 5907–5921 (2020). https://doi.org/10.1007/s10570-020-03193-8

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  • DOI: https://doi.org/10.1007/s10570-020-03193-8

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