Allyl triphenyl phosphonium bromide based DES-functionalized carbon nanotubes for the removal of mercury from water

Mohamed Khalid Alomar, Mohammed Abdulhakim Alsaadi, Maan Hayyan, Shatirah Mohamed Akib, Muhammad Ibrahim, Mohd Ali Hashim

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

Recently, deep eutectic solvents (DESs) have shown their new and interesting ability for chemistry through their involvement in variety of applications. This study introduces carbon nanotubes (CNTs) functionalized with DES as a novel adsorbent for Hg2+ from water. Allyl triphenyl phosphonium bromide (ATPB) was combined with glycerol as the hydrogen bond donor (HBD) to form DES, which can act as a novel CNTs functionalization agent. The novel adsorbent was characterized using Raman, FTIR, XRD, FESEM, EDX, BET surface area, TGA, TEM and Zeta potential. Response surface methodology was used to optimize the removal conditions for Hg2+. The optimum removal conditions were found to be pH 5.5, contact time 28 min, and an adsorbent dosage of 5 mg. Freundlich isotherm model described the adsorption isotherm of the novel adsorbent, and the maximum adsorption capacity obtained from the experimental data was 186.97 mg g−1. Pseudo-second order kinetics describes the adsorption rate order.

Original languageEnglish
Pages (from-to)44-52
Number of pages9
JournalChemosphere
Volume167
Early online date4 Oct 2016
DOIs
Publication statusPublished - Jan 2017

Keywords

  • Carbon nanotubes
  • Deep eutectic solvents
  • Functionalization
  • Ionic liquids
  • Mercury adsorption

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry

Fingerprint Dive into the research topics of 'Allyl triphenyl phosphonium bromide based DES-functionalized carbon nanotubes for the removal of mercury from water'. Together they form a unique fingerprint.

Cite this