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 language | English (US) |
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Pages (from-to) | 1099-1103 |
Number of pages | 5 |
Journal | Inorganic Chemistry Communications |
Volume | 12 |
Issue number | 11 |
DOIs | |
State | Published - Nov 2009 |
Externally published | Yes |
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