Metal-ion adsorption on carboxyl-bearing self-assembled monolayers covalently bound to magnetic nanoparticles

Bin Hai, Jun Wu, Xufang Chen, John D. Protasiewicz, Daniel Alberto Scherson

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Hematite nanoparticles have been functionalized with a self-assembled monolayer of undecanoic acid (UA) by covalent attachment via siloxane groups. The number density of carboxylic/carboxylate groups on the surface was determined by titration, yielding values on the order of 10 14 UA molecules/cm 2 and thus consistent with a closed-packed monolayer. The ability of these functionalized particles to adsorb Cd 2+ in the ppm range was demonstrated using in situ anodic stripping voltammetry.

Original languageEnglish
Pages (from-to)3104-3105
Number of pages2
JournalLangmuir
Volume21
Issue number7
DOIs
Publication statusPublished - 2005 Mar 29
Externally publishedYes

Fingerprint

Bearings (structural)
Self assembled monolayers
Metal ions
metal ions
anodic stripping
Siloxanes
Nanoparticles
Adsorption
nanoparticles
acids
adsorption
Acids
siloxanes
Hematite
Voltammetry
hematite
Titration
titration
carboxylates
attachment

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

Cite this

Metal-ion adsorption on carboxyl-bearing self-assembled monolayers covalently bound to magnetic nanoparticles. / Hai, Bin; Wu, Jun; Chen, Xufang; Protasiewicz, John D.; Scherson, Daniel Alberto.

In: Langmuir, Vol. 21, No. 7, 29.03.2005, p. 3104-3105.

Research output: Contribution to journalArticle

Hai, Bin ; Wu, Jun ; Chen, Xufang ; Protasiewicz, John D. ; Scherson, Daniel Alberto. / Metal-ion adsorption on carboxyl-bearing self-assembled monolayers covalently bound to magnetic nanoparticles. In: Langmuir. 2005 ; Vol. 21, No. 7. pp. 3104-3105.
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