Stability of water-stable C60 clusters to OH radical oxidation and hydrated electron reduction

Jaesang Lee, Weihua Song, Seung S. Jang, John D. Fortner, Pedro J J Alvarez, William J. Cooper, Jae Hong Kim

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Reactions of water-stable C60 clusters (nC60) in water with OH radicals (•OH) and hydrated electrons (eaq -), generated by steady-state γ-radiation, were observed and characterized. Ordered C60 clusters were relatively recalcitrant to highly reactive •OH and eaq - species, with only a fraction of carbons oxidized and reduced, respectively. Pulse radiolysis suggested that the reactions of nC60 with OH• and e aq - were diffusion limited, with rate constants of (7.34 ± 0.31) - 109 M-1 s-1 and (2.34 ± 0.02) - 1010 M-1 s-1, respectively. Quantum mechanical calculations of binding energy of the C60-OH adduct as a function of C60 clustering degree indicate, despite an initial fast reaction, a slower overall conversion due to thermodynamic instability of C 60-OH intermediates. The results imply that ordered clustering of C60 in the aqueous phase significantly hinders C60s fundamental reactivity with radical species.

Original languageEnglish
Pages (from-to)3786-3792
Number of pages7
JournalEnvironmental Science and Technology
Volume44
Issue number10
DOIs
Publication statusPublished - 2010 May 15
Externally publishedYes

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Cluster Analysis
Pulse Radiolysis
Electrons
oxidation
electron
Oxidation
Radiolysis
Water
Binding energy
Thermodynamics
Rate constants
Carbon
thermodynamics
Radiation
water
carbon
energy
radiation
calculation
rate

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry

Cite this

Lee, J., Song, W., Jang, S. S., Fortner, J. D., Alvarez, P. J. J., Cooper, W. J., & Kim, J. H. (2010). Stability of water-stable C60 clusters to OH radical oxidation and hydrated electron reduction. Environmental Science and Technology, 44(10), 3786-3792. https://doi.org/10.1021/es903550e

Stability of water-stable C60 clusters to OH radical oxidation and hydrated electron reduction. / Lee, Jaesang; Song, Weihua; Jang, Seung S.; Fortner, John D.; Alvarez, Pedro J J; Cooper, William J.; Kim, Jae Hong.

In: Environmental Science and Technology, Vol. 44, No. 10, 15.05.2010, p. 3786-3792.

Research output: Contribution to journalArticle

Lee, J, Song, W, Jang, SS, Fortner, JD, Alvarez, PJJ, Cooper, WJ & Kim, JH 2010, 'Stability of water-stable C60 clusters to OH radical oxidation and hydrated electron reduction', Environmental Science and Technology, vol. 44, no. 10, pp. 3786-3792. https://doi.org/10.1021/es903550e
Lee, Jaesang ; Song, Weihua ; Jang, Seung S. ; Fortner, John D. ; Alvarez, Pedro J J ; Cooper, William J. ; Kim, Jae Hong. / Stability of water-stable C60 clusters to OH radical oxidation and hydrated electron reduction. In: Environmental Science and Technology. 2010 ; Vol. 44, No. 10. pp. 3786-3792.
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