Adsorption of Cu (II) ions from water by carbon nanotubes oxidized with UV-light and ultrasonication

BAYAZİT Ş. S., Inci I.

JOURNAL OF MOLECULAR LIQUIDS, cilt.199, ss.559-564, 2014 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 199
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1016/j.molliq.2014.10.001
  • Dergi Adı: JOURNAL OF MOLECULAR LIQUIDS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.559-564
  • İstanbul Üniversitesi Adresli: Evet

Özet

The copper ion adsorption from aqueous solutions on oxidized single-wall (SWCNTs) and multi-wall carbon nanotubes (MWCNTs) was investigated. Two different oxidation methods were used on the carbon nanotubes. One is ultrasonication of CNTs with concentrated HNO3, and the other is the oxidation of CNTs under UV-light with concentrated HNO3. The efficiencies of the oxidation methods were determined using Cu (II) adsorption. The adsorption parameters were examined, such as Cu (II) ion concentrations, pH, adsorption time, adsorbent quantities and temperature. The adsorption mechanism between the carbon nanotubes and Cu (II) ions was modeled using Langmuir and Freundlich isotherms, Pseudo-second order kinetic model, and Bangham and Elovich models. (C) 2014 Elsevier B.V. All rights reserved.