Synthesis of large-pore phenyl-bridged mesoporous organosilica with thick walls by evaporation-induced self-assembly for efficient benzene adsorption

Na Hao, Yunxia Yang, Huanting Wang, Paul Anthony Webley, Dongyuan Zhao

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Large-pore phenyl-bridged periodic mesoporous organosilicas (PMOs) were facilely synthesized by evaporation-induced self-assembly of 1,4-bis(triethoxysily)benzene and triblock copolymer Pluronic F127 as a template under acid conditions combined with a mixed-solvothermal treatment. The ordered PMOs exhibit large uniform mesopores of ∼9.9 nm in diameter after calcination at 350 °C in a nitrogen atmosphere. The mesoporous phenyl-bridged organosilica products have an ordered hexagonal mesostructure with space group p6mm. N2 adsorption/desorption isotherms reveal imperfect mesopore channels with high surface areas (up to 1150 m2/g) and thick pore walls (up to 7.7 nm). The mesopores can be expanded with the decrease of acidity, as well as the increase of Pluronic F127 content. A mixed-solvothermal treatment in N,N-dimethylformamide (DMF) and water at 100 °C was first used to improve the periodicity of the mesopore walls, as well as increase the wall thickness. The composites exhibit efficient adsorption capacities (2.06 mmol g−1) for benzene, suggesting a potential adsorbent for removal of volatile organic compounds. The EISA approach combined with the mixed-solvothermal treatment provides important insights into the development of large-pore PMOs by using long-chain organosilanes, and further demonstrates the ability to fabricate materials with thick walls.
Original languageEnglish
Pages (from-to)429 - 435
Number of pages7
JournalJournal of Colloid and Interface Science
Volume346
Issue number2
DOIs
Publication statusPublished - 2010

Cite this

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title = "Synthesis of large-pore phenyl-bridged mesoporous organosilica with thick walls by evaporation-induced self-assembly for efficient benzene adsorption",
abstract = "Large-pore phenyl-bridged periodic mesoporous organosilicas (PMOs) were facilely synthesized by evaporation-induced self-assembly of 1,4-bis(triethoxysily)benzene and triblock copolymer Pluronic F127 as a template under acid conditions combined with a mixed-solvothermal treatment. The ordered PMOs exhibit large uniform mesopores of ∼9.9 nm in diameter after calcination at 350 °C in a nitrogen atmosphere. The mesoporous phenyl-bridged organosilica products have an ordered hexagonal mesostructure with space group p6mm. N2 adsorption/desorption isotherms reveal imperfect mesopore channels with high surface areas (up to 1150 m2/g) and thick pore walls (up to 7.7 nm). The mesopores can be expanded with the decrease of acidity, as well as the increase of Pluronic F127 content. A mixed-solvothermal treatment in N,N-dimethylformamide (DMF) and water at 100 °C was first used to improve the periodicity of the mesopore walls, as well as increase the wall thickness. The composites exhibit efficient adsorption capacities (2.06 mmol g−1) for benzene, suggesting a potential adsorbent for removal of volatile organic compounds. The EISA approach combined with the mixed-solvothermal treatment provides important insights into the development of large-pore PMOs by using long-chain organosilanes, and further demonstrates the ability to fabricate materials with thick walls.",
author = "Na Hao and Yunxia Yang and Huanting Wang and Webley, {Paul Anthony} and Dongyuan Zhao",
year = "2010",
doi = "10.1016/j.jcis.2010.01.074",
language = "English",
volume = "346",
pages = "429 -- 435",
journal = "Journal of Colloid and Interface Science",
issn = "0021-9797",
publisher = "Elsevier",
number = "2",

}

Synthesis of large-pore phenyl-bridged mesoporous organosilica with thick walls by evaporation-induced self-assembly for efficient benzene adsorption. / Hao, Na; Yang, Yunxia; Wang, Huanting; Webley, Paul Anthony; Zhao, Dongyuan.

In: Journal of Colloid and Interface Science, Vol. 346, No. 2, 2010, p. 429 - 435.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Synthesis of large-pore phenyl-bridged mesoporous organosilica with thick walls by evaporation-induced self-assembly for efficient benzene adsorption

AU - Hao, Na

AU - Yang, Yunxia

AU - Wang, Huanting

AU - Webley, Paul Anthony

AU - Zhao, Dongyuan

PY - 2010

Y1 - 2010

N2 - Large-pore phenyl-bridged periodic mesoporous organosilicas (PMOs) were facilely synthesized by evaporation-induced self-assembly of 1,4-bis(triethoxysily)benzene and triblock copolymer Pluronic F127 as a template under acid conditions combined with a mixed-solvothermal treatment. The ordered PMOs exhibit large uniform mesopores of ∼9.9 nm in diameter after calcination at 350 °C in a nitrogen atmosphere. The mesoporous phenyl-bridged organosilica products have an ordered hexagonal mesostructure with space group p6mm. N2 adsorption/desorption isotherms reveal imperfect mesopore channels with high surface areas (up to 1150 m2/g) and thick pore walls (up to 7.7 nm). The mesopores can be expanded with the decrease of acidity, as well as the increase of Pluronic F127 content. A mixed-solvothermal treatment in N,N-dimethylformamide (DMF) and water at 100 °C was first used to improve the periodicity of the mesopore walls, as well as increase the wall thickness. The composites exhibit efficient adsorption capacities (2.06 mmol g−1) for benzene, suggesting a potential adsorbent for removal of volatile organic compounds. The EISA approach combined with the mixed-solvothermal treatment provides important insights into the development of large-pore PMOs by using long-chain organosilanes, and further demonstrates the ability to fabricate materials with thick walls.

AB - Large-pore phenyl-bridged periodic mesoporous organosilicas (PMOs) were facilely synthesized by evaporation-induced self-assembly of 1,4-bis(triethoxysily)benzene and triblock copolymer Pluronic F127 as a template under acid conditions combined with a mixed-solvothermal treatment. The ordered PMOs exhibit large uniform mesopores of ∼9.9 nm in diameter after calcination at 350 °C in a nitrogen atmosphere. The mesoporous phenyl-bridged organosilica products have an ordered hexagonal mesostructure with space group p6mm. N2 adsorption/desorption isotherms reveal imperfect mesopore channels with high surface areas (up to 1150 m2/g) and thick pore walls (up to 7.7 nm). The mesopores can be expanded with the decrease of acidity, as well as the increase of Pluronic F127 content. A mixed-solvothermal treatment in N,N-dimethylformamide (DMF) and water at 100 °C was first used to improve the periodicity of the mesopore walls, as well as increase the wall thickness. The composites exhibit efficient adsorption capacities (2.06 mmol g−1) for benzene, suggesting a potential adsorbent for removal of volatile organic compounds. The EISA approach combined with the mixed-solvothermal treatment provides important insights into the development of large-pore PMOs by using long-chain organosilanes, and further demonstrates the ability to fabricate materials with thick walls.

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