Carbon nanotube-grafted chitosan and its adsorption capacity for phenol in aqueous solution

Ming Guo, Jue Wang, Chunge Wang, P. J. Strong, Peikun Jiang, Yong Sik Ok, Hailong Wang

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Chitosan was covalently grafted onto the surface of multi-walled carbon nanotubes to create a novel chitosan/multi-walled carbon nanotube. The structure of the new material was characterized using Fourier transform-infrared spectroscopy, cross polarization magic angle spinning 13 C nuclear magnetic resonance, thermogravimetric analysis, XRD ray diffraction analysis, differential scanning calorimetry and scanning electron microscopy. The phenol adsorption capacity was determined and the Langmuir and Freundlich models were used to describe the adsorption isotherms. The adsorption capacity of the novel chitosan/multi-walled carbon nanotube material for phenol (86.96 mg/g) was improved compared to the original chitosan (61.69 mg/g). The kinetic studies showed rapid adsorption, exhibiting Lagergren second-order kinetics. Therefore, this study provides a reference for preparing functional materials from biological substrates that are able to remove toxic pollutants from an aqueous environment.

Original languageEnglish
Pages (from-to)340-347
Number of pages8
JournalScience of the Total Environment
Volume682
DOIs
Publication statusPublished - 2019 Sep 10

Keywords

  • Isotherm
  • Nanomaterial
  • Organic pollutants
  • Sorption
  • Structure characteristics

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution

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