Journal
INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY
Volume 113, Issue 15, Pages 1931-1939Publisher
WILEY
DOI: 10.1002/qua.24416
Keywords
Graphene; DFT-D; 4-chlorophenol; graphene oxide; doped graphene
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Density functional theory (including van der Waals correction with the PBE-D functional) is applied to the study of 4-chlorophenol (4-CP) adsorption on graphene oxide (GO), A-doped graphene (A = N, B), and pristine graphene and test their possible application for 4-CP removal. Results show that on GO adsorption is improved by the hydrogen bond interactions between the adsorbents and 4-CP, suggesting that functionalized graphene is a preferable alternative than pristine graphene for 4-CP removal. In addition, the stability of hydrogen bonds is confirmed by molecular dynamics calculations using the PM6 potential. Without hydrogen bonds, A-doped graphene models show a comparable performance for 4-CP removal than pristine graphene. Finally, even in a solvent medium, 4-CP adsorption is strong. (c) 2013 Wiley Periodicals, Inc.
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