Characterization of functionalized multiwalled carbon nanotubes and application as an effective filter for heavy metal removal from aqueous solutions

Emad. M. Elsehly; N. G. Chechenin; A. V. Makunin; H. A. Motaweh; E. A. Vorobyeva; K. A. Bukunov; E. G. Leksina; A. B. Priselkova

doi:10.1016/j.cjche.2016.05.017

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Characterization of functionalized multiwalled carbon nanotubes and application as an effective filter for heavy metal removal from aqueous solutions

Separation Science and Engineering | Updated：2026-01-06

- Characterization of functionalized multiwalled carbon nanotubes and application as an effective filter for heavy metal removal from aqueous solutions
- Chinese Journal of Chemical Engineering Vol. 24, Issue 12, Pages: 1695-1702(2016)
- Affiliations：
  
  1. Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University,Russia
  2. Faculty of Science, Damanhour University,Egypt
  3. Faculty of Physics, Lomonosov Moscow State University,Russia
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2016.05.017
  CLC：
- Published：2016
- Accepted：
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Emad. M. Elsehly, N. G. Chechenin, A. V. Makunin, H. A. Motaweh, E. A. Vorobyeva, K. A. Bukunov, E. G. Leksina, A. B. Priselkova. Characterization of functionalized multiwalled carbon nanotubes and application as an effective filter for heavy metal removal from aqueous solutions[J]. , 2016, 24(12): 1695-1702.
DOI：

Emad. M. Elsehly, N. G. Chechenin, A. V. Makunin, H. A. Motaweh, E. A. Vorobyeva, K. A. Bukunov, E. G. Leksina, A. B. Priselkova. Characterization of functionalized multiwalled carbon nanotubes and application as an effective filter for heavy metal removal from aqueous solutions[J]. , 2016, 24(12): 1695-1702. DOI： 10.1016/j.cjche.2016.05.017.

摘要

Abstract

Filtration efficiency of Ni(II) from aqueous solution using pristine and modified MWCNTs filters was investigated as a function of Ni(II) ion concentration

and filter mass. MWCNTs were synthesized by CVD method and modified using two complementary treatments

purification (using a mixture of hydrochloric acid and hydrogen peroxide) and functionalization (using nitric acid). The effect and mechanism of each treatment on the structural integrity of pristine MWCNTs has been studied. Morphology of the pristine and modified filters was investigated by Raman Spectrometry (RS)

Scanning Electron Microscopy (SEM)

Energy Dispersive X-ray Spectroscopy (EDS)

Fourier Transform Infrared (FTIR) spectrometry and Thermogravimetric analysis. It was found from Raman spectra that the ratio of the intensity of D-band to that of G-band decreased by purification process

and increased by functionalization process. The adsorption mechanism of Ni(II) onto the surface functional groups of modified MWCNTs was confirmed by FTIR spectrum. The filtration results showed that the removal efficiency of Ni(II) is strongly dependent on pH and could reach 85% at pH=8. Also

modified MWCNT filters can be reused through many cycles of regeneration with high performance. Functionalized MWCNTs filters may be a promising adsorbent candidate for heavy metal removal from wastewater.

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