Reactions of alkyl-radicals with gold and silver nanoparticles in aqueous solutions

Tomer Zidki; Haim Cohen; Dan Meyerstein

doi:10.1039/b604140j

Reactions of alkyl-radicals with gold and silver nanoparticles in aqueous solutions

Tomer Zidki, Haim Cohen, Dan Meyerstein

Department of Chemical Sciences

Research output: Contribution to journal › Article › peer-review

54 Scopus citations

Abstract

Silver and gold nanoparticles are very efficient catalysts for the dimerization of methyl-radicals in aqueous solutions. The rate constants for the reaction of methyl-radicals with the gold and silver nanoparticles were measured and found to be 3.7 × 10⁸ M^-1 s^-1 and 1.4 × 10⁹ M^-1 s^-1, respectively. The results thus suggest that alkyl-radicals, also not reducing ones, are scavenged by these nanoparticles. This might explain the role, if such a role exists, of these nanoparticles in medical applications.

Original language	English
Pages (from-to)	3552-3556
Number of pages	5
Journal	Physical Chemistry Chemical Physics
Volume	8
Issue number	30
DOIs	https://doi.org/10.1039/b604140j
State	Published - 27 Jul 2006

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AB - Silver and gold nanoparticles are very efficient catalysts for the dimerization of methyl-radicals in aqueous solutions. The rate constants for the reaction of methyl-radicals with the gold and silver nanoparticles were measured and found to be 3.7 × 108 M-1 s-1 and 1.4 × 109 M-1 s-1, respectively. The results thus suggest that alkyl-radicals, also not reducing ones, are scavenged by these nanoparticles. This might explain the role, if such a role exists, of these nanoparticles in medical applications.

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Reactions of alkyl-radicals with gold and silver nanoparticles in aqueous solutions

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