Rapid and efficient removal of heavy metal ions from aqueous media using cysteine-modified polymer nanowires

Sagar Tolani, Amos Mugweru, Michael Craig, Adam K. Wanekaya

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

We report the development of a novel, simple, and highly effective polymeric material with nanoscale dimensions for use in removal of heavy metal ions from aqueous media. The nanomaterial was ∼ 200 nm in diameter and several microns long and was fabricated in the form of nanowires via template-directed electrochemical polymerization. The nanowires were covalently modified by cysteine, a nonessential amino acid with very high binding constants for selected toxic heavy metal ions, such as, As 3+ , Cd 2+ , Pb 2+ , and Cu 2+ . We demonstrated rapid and efficient removal of As 3+ , Cd 2+ , Pb 2+ , and Cu 2+ ions from natural water samples. The arsenic removal capacity was found to be ∼ 160 mg As 3+ per gram of the material, a substantially greater removal capacity than other materials reported to date. The removal capacity of other heavy metals ions was also rapid and effective, their concentrations becoming undetectable in a matter of minutes after treatment with the nanowires. These nanowires have demonstrated potential that could lead to a low cost, novel, and highly effective technique for use in treatment of drinking water and for other environmental remediation purposes.

Original languageEnglish (US)
Pages (from-to)308-313
Number of pages6
JournalJournal of Applied Polymer Science
Volume116
Issue number1
DOIs
StatePublished - Apr 5 2010

Fingerprint

Heavy Metals
Heavy ions
Heavy metals
Nanowires
Metal ions
Cysteine
Polymers
Electropolymerization
Poisons
Arsenic
Nanostructured materials
Potable water
Drinking Water
Amino acids
Ions
Amino Acids
Water
Costs

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

Cite this

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abstract = "We report the development of a novel, simple, and highly effective polymeric material with nanoscale dimensions for use in removal of heavy metal ions from aqueous media. The nanomaterial was ∼ 200 nm in diameter and several microns long and was fabricated in the form of nanowires via template-directed electrochemical polymerization. The nanowires were covalently modified by cysteine, a nonessential amino acid with very high binding constants for selected toxic heavy metal ions, such as, As 3+ , Cd 2+ , Pb 2+ , and Cu 2+ . We demonstrated rapid and efficient removal of As 3+ , Cd 2+ , Pb 2+ , and Cu 2+ ions from natural water samples. The arsenic removal capacity was found to be ∼ 160 mg As 3+ per gram of the material, a substantially greater removal capacity than other materials reported to date. The removal capacity of other heavy metals ions was also rapid and effective, their concentrations becoming undetectable in a matter of minutes after treatment with the nanowires. These nanowires have demonstrated potential that could lead to a low cost, novel, and highly effective technique for use in treatment of drinking water and for other environmental remediation purposes.",
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Rapid and efficient removal of heavy metal ions from aqueous media using cysteine-modified polymer nanowires. / Tolani, Sagar; Mugweru, Amos; Craig, Michael; Wanekaya, Adam K.

In: Journal of Applied Polymer Science, Vol. 116, No. 1, 05.04.2010, p. 308-313.

Research output: Contribution to journalArticle

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