Mechanisms of competitive adsorption organic pollutants on hexylene-bridged polysilsesquioxane

De Rong Lin, Li Jiang Hu, Bao Shan Xing, Hong You, Douglas A Loy

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Hexylene-bridged periodic mesoporous polysilsesquioxanes (HBPMS) are a promising new class of adsorbent for the removal of organic contaminants from aqueous solutions. These hybrid organic-inorganic materials have a larger BET surface area of 897 m2 · g-1 accessible through a cubic, isotropic network of 3.82-nm diameter pores. The hexylene bridging group provides enhanced adsorption of organic molecules while the bridged polysilsesquioxane structure permits sufficient silanols that are hydrophilic to be retained. In this study, adsorption of phenanthrene (PHEN), 2,4-Dichlorophenol (DCP), and nitrobenzene (NBZ) with HBPMS materials was studied to ascertain the relative contributions to adsorption performance from (1) direct competition for sites and (2) pore blockage. A conceptual model was proposed to further explain the phenomena. This study suggests a promising application of cubic mesoporous BPS in wastewater treatment.

Original languageEnglish (US)
Pages (from-to)5806-5817
Number of pages12
JournalMaterials
Volume8
Issue number9
DOIs
StatePublished - 2015

Fingerprint

Organic pollutants
Adsorption
Mesoporous materials
Nitrobenzene
Wastewater treatment
Adsorbents
Impurities
Molecules
polysilsesquioxane

Keywords

  • Competition adsorption sites
  • Competitive adsorption
  • Hexylene bridged polysilsesquioxane
  • Organic pollutants
  • Pore blockage

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Mechanisms of competitive adsorption organic pollutants on hexylene-bridged polysilsesquioxane. / Lin, De Rong; Hu, Li Jiang; Xing, Bao Shan; You, Hong; Loy, Douglas A.

In: Materials, Vol. 8, No. 9, 2015, p. 5806-5817.

Research output: Contribution to journalArticle

Lin, De Rong ; Hu, Li Jiang ; Xing, Bao Shan ; You, Hong ; Loy, Douglas A. / Mechanisms of competitive adsorption organic pollutants on hexylene-bridged polysilsesquioxane. In: Materials. 2015 ; Vol. 8, No. 9. pp. 5806-5817.
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