Transition metal ion capture using functional mesoporous carbon made with 1,10-phenanthroline

Wilaiwan Chouyyok, Wassana Yantasee, Yongsoon Shin, Rafal M. Grudzien, Glen E. Fryxell

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

Functional mesoporous carbon has been built using 1,10-phenanthroline as the fundamental building block, resulting in a nanoporous, high surface area sorbent capable of selectively binding transition metal ions. This material had a specific surface area of 870 m2/g, an average pore size of about 30 Å, and contained as much as 8.2 wt% N. Under acidic conditions, where the 1,10-phenanthroline ligand is protonated, this material was found to be an effective anion exchange material for transition metal anions like PdCl42 - and H2 VO41 -. 1,10-Phenanthroline functionalized mesoporous carbon ("Phen-FMC") was found to have a high affinity for Cu(II), even down to a pH of 1. At pHs above 5, Phen-FMC was found to bind a variety of transition metal cations (e.g. Co(II), Ni(II), Zn(II), etc.) from filtered ground water, river water and seawater. Phen-FMC displayed rapid sorption kinetics with Co(II) in filtered river water, reaching equilibrium in less than an hour, and easily lowering the [Co(II)] to sub-ppb levels. Phen-FMC was found to be more effective for transition metal ion capture than ion-exchange resin or activated carbon.

Original languageEnglish (US)
Pages (from-to)1099-1103
Number of pages5
JournalInorganic Chemistry Communications
Volume12
Issue number11
DOIs
StatePublished - Nov 2009

Keywords

  • Anion exchange
  • Dialysis
  • Ion exchange
  • Mesoporous carbon
  • Metal ion chelation
  • Metal poisoning
  • Nanoporous
  • Natural waters
  • Sorbent
  • Water purification

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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