Mechanisms of competitive adsorption organic pollutants on hexylene-bridged polysilsesquioxane

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

doi:10.3390/ma8095275

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 journal › Article › peer-review

22 Scopus citations

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 language	English (US)
Pages (from-to)	5806-5817
Number of pages	12
Journal	Materials
Volume	8
Issue number	9
DOIs	https://doi.org/10.3390/ma8095275
State	Published - 2015

Keywords

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

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics

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10.3390/ma8095275

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title = "Mechanisms of competitive adsorption organic pollutants on hexylene-bridged polysilsesquioxane",

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.",

keywords = "Competition adsorption sites, Competitive adsorption, Hexylene bridged polysilsesquioxane, Organic pollutants, Pore blockage",

author = "Lin, {De Rong} and Hu, {Li Jiang} and Xing, {Bao Shan} and Hong You and Loy, {Douglas A.}",

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language = "English (US)",

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T1 - Mechanisms of competitive adsorption organic pollutants on hexylene-bridged polysilsesquioxane

AU - Lin, De Rong

AU - Hu, Li Jiang

AU - Xing, Bao Shan

AU - You, Hong

AU - Loy, Douglas A.

PY - 2015

Y1 - 2015

N2 - 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.

AB - 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.

KW - Competition adsorption sites

KW - Competitive adsorption

KW - Hexylene bridged polysilsesquioxane

KW - Organic pollutants

KW - Pore blockage

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DO - 10.3390/ma8095275

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JO - Materials

JF - Materials

IS - 9

ER -

Mechanisms of competitive adsorption organic pollutants on hexylene-bridged polysilsesquioxane

Abstract

Keywords

ASJC Scopus subject areas

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