Super-sieving effect in phenol adsorption from aqueous solutions on nanoporous carbon beads

Piotr Kowalczyk, Artur Deditius, Wendell P. Ela, Marek Wiśniewski, Piotr A. Gauden, Artur P. Terzyk, Sylwester Furmaniak, Jerzy Włoch, Katsumi Kaneko, Alexander V. Neimark

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

Removal of aromatic contaminants, like phenol, from water can be efficiently achieved by preferential adsorption on porous carbons which exhibit molecular sieving properties. Here, we present nanoporous carbon beads exhibiting an outstanding sieving effect in phenol adsorption from aqueous solution at neutral pH, which is evidenced experimentally and theoretically. The molecular sieving with pure phenol adsorbed phase is achieved by tuning the pore size and surface chemistry of the adsorbent. This study elucidates the essential role of hydrophobic interactions in narrow carbon micropores in removal and clean-up of water from organic pollutants. Furthermore, we suggest a new theoretical approach for evaluation of phenol adsorption capacity that is based on the Monte Carlo simulation of phenol adsorption with the relevance to the pore size distribution function determined by the density functional theory method from low temperature nitrogen adsorption.

Original languageEnglish (US)
Pages (from-to)12-20
Number of pages9
JournalCarbon
Volume135
DOIs
StatePublished - Aug 2018

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

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    Kowalczyk, P., Deditius, A., Ela, W. P., Wiśniewski, M., Gauden, P. A., Terzyk, A. P., Furmaniak, S., Włoch, J., Kaneko, K., & Neimark, A. V. (2018). Super-sieving effect in phenol adsorption from aqueous solutions on nanoporous carbon beads. Carbon, 135, 12-20. https://doi.org/10.1016/j.carbon.2018.03.063