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Synthesis and Characterization of a Novel Bio Nanosponge Filter (pMWCNT-CD/TiO2-Ag) as Potential Adsorbent for Water Purification

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Emerging Trends in Chemical Sciences (ICPAC 2016)

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Abstract

This study reports the synthesis and characterization of a novel bio nanosponge filter for applications in water treatment. Firstly the oxidized multiwalled carbon nanotubes (MWCNTs) were chlorinated using oxalyl chloride and then phosphorylated via an amidation reaction. The phosphorylated carbon nanotube (pMWCNT) obtained was polymerized with β-cyclodextrin (βCD) using hexamethylene diisocyanate (HMDI) as a linker. The resulting polymer (pMWCNT-βCD) was decorated by a sol-gel method with TiO2 and Ag nanoparticles to obtain a biopolymer nanocomposite, pMWCNT-βCD/TiO2-Ag. For a better evaluation of the target material, CD polymer and pMWCNT-CD polymer were also synthesized for comparison purposes. Fourier-transform infrared (FTIR) spectroscopy was used to confirm the presence of functional groups on the surface of modified MWCNTs and the polymerization reaction. Laser Raman spectroscopy analysis showed the presence of MWCNT, CD and the anatase crystalline form of TiO2 in the nanocomposite. Preliminary adsorption studies were also conducted in order to test the capability of the new bio nanosponge filter to remove metal ions pollutants from synthetic wastewater solutions.

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Acknowledgements

The authors would like to acknowledge the National Research Foundation (NRF), the University of Johannesburg and Water Research Commission (WRC) for the financial supports and the facilities offered. DST/NRF Centre of Excellence in Strong Materials at the University of the Witwatersrand is also appreciated for the Raman & BET surface area analyses, and above all the God Almighty.

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Authors and Affiliations

  1. Department of Applied Chemistry, University of Johannesburg, Doornfontein, Johannesburg, 2028, South Africa

    Anny Leudjo Taka, Kriveshini Pillay & Xavier Yangkou Mbianda

Authors
  1. Anny Leudjo Taka
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  2. Kriveshini Pillay
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  3. Xavier Yangkou Mbianda
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Corresponding authors

Correspondence to Anny Leudjo Taka or Xavier Yangkou Mbianda .

Editor information

Editors and Affiliations

  1. Dept. of Chem., Fac. of Science, University of Mauritius, Reduit, Mauritius

    Ponnadurai Ramasami

  2. Dept. of Chem., Fac. of Science, University of Mauritius, Reduit, Mauritius

    Minu Gupta Bhowon

  3. Dept. of Chem., Fac. of Science, University of Mauritius, Reduit, Mauritius

    Sabina Jhaumeer Laulloo

  4. Dept. of Chem., Fac. of Science, University of Mauritius, Reduit, Mauritius

    Henri Li Kam Wah

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Leudjo Taka, A., Pillay, K., Mbianda, X.Y. (2018). Synthesis and Characterization of a Novel Bio Nanosponge Filter (pMWCNT-CD/TiO2-Ag) as Potential Adsorbent for Water Purification. In: Ramasami, P., Gupta Bhowon, M., Jhaumeer Laulloo, S., Li Kam Wah, H. (eds) Emerging Trends in Chemical Sciences. ICPAC 2016. Springer, Cham. https://doi.org/10.1007/978-3-319-60408-4_18

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