Remediation of chlorinated hydrocarbons using supported zero valent nickel-iron nanoparticles

Bettina Schrick, Sherman M. Ponder, Thomas E. Mallouk

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

The use of zero valent iron is increasingly becoming a mature technology for the in situ remediation of reducible metal ions and chlorinated organics from aqueous streams. Nanoparticles of zero valent metals generally have a higher activity than larger particles because they have a higher surface area, resulting in a more rapid remediation rate. Fe-Ni nanoparticles were characterized and evaluated for the remediation of aqueous trichloroethylene (TCE) using supports with various properties to obtain an improved material for the reductive dehalogenation reaction. Fe-Ni nanoparticles were prepared by borohydride reduction of aqueous iron and nickel salts in the presence of a support material. In the case of Fe fillings and supported nanoiron, which contain only about 20 atom % Fe on their surfaces, the corrosion products deposited primarily on hydrophobic surface regions that do not contain active iron sites. In the case of unsupported nanoiron, corrosion product deposition occurred directly onto the iron active sites, thereby passivating the unreacted iron.

Original languageEnglish (US)
Pages (from-to)639-640
Number of pages2
JournalACS National Meeting Book of Abstracts
Volume40
Issue number2
StatePublished - Dec 1 2000
Event220th ACS National Meeting - Wastington, DC, United States
Duration: Aug 20 2000Aug 24 2000

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Chlorinated Hydrocarbons
Nickel
Remediation
Iron
Nanoparticles
Dehalogenation
Corrosion
Trichloroethylene
Borohydrides
Metal ions
Salts
Metals
Atoms

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Schrick, Bettina ; Ponder, Sherman M. ; Mallouk, Thomas E. / Remediation of chlorinated hydrocarbons using supported zero valent nickel-iron nanoparticles. In: ACS National Meeting Book of Abstracts. 2000 ; Vol. 40, No. 2. pp. 639-640.
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Remediation of chlorinated hydrocarbons using supported zero valent nickel-iron nanoparticles. / Schrick, Bettina; Ponder, Sherman M.; Mallouk, Thomas E.

In: ACS National Meeting Book of Abstracts, Vol. 40, No. 2, 01.12.2000, p. 639-640.

Research output: Contribution to journalConference article

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N2 - The use of zero valent iron is increasingly becoming a mature technology for the in situ remediation of reducible metal ions and chlorinated organics from aqueous streams. Nanoparticles of zero valent metals generally have a higher activity than larger particles because they have a higher surface area, resulting in a more rapid remediation rate. Fe-Ni nanoparticles were characterized and evaluated for the remediation of aqueous trichloroethylene (TCE) using supports with various properties to obtain an improved material for the reductive dehalogenation reaction. Fe-Ni nanoparticles were prepared by borohydride reduction of aqueous iron and nickel salts in the presence of a support material. In the case of Fe fillings and supported nanoiron, which contain only about 20 atom % Fe on their surfaces, the corrosion products deposited primarily on hydrophobic surface regions that do not contain active iron sites. In the case of unsupported nanoiron, corrosion product deposition occurred directly onto the iron active sites, thereby passivating the unreacted iron.

AB - The use of zero valent iron is increasingly becoming a mature technology for the in situ remediation of reducible metal ions and chlorinated organics from aqueous streams. Nanoparticles of zero valent metals generally have a higher activity than larger particles because they have a higher surface area, resulting in a more rapid remediation rate. Fe-Ni nanoparticles were characterized and evaluated for the remediation of aqueous trichloroethylene (TCE) using supports with various properties to obtain an improved material for the reductive dehalogenation reaction. Fe-Ni nanoparticles were prepared by borohydride reduction of aqueous iron and nickel salts in the presence of a support material. In the case of Fe fillings and supported nanoiron, which contain only about 20 atom % Fe on their surfaces, the corrosion products deposited primarily on hydrophobic surface regions that do not contain active iron sites. In the case of unsupported nanoiron, corrosion product deposition occurred directly onto the iron active sites, thereby passivating the unreacted iron.

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