One-pot synthesis of silica monoliths with hierarchically porous structure
Poly(furfuryl alcohol) (PFA) and block copolymer Pluronic F127 were used as pore templates to create mechanically robust silica monoliths with a hierarchical and interconnected macro-mesoporous network in an easy, reproducible bimodal scale templating process. Control over the morphology was obtaine...
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2012
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13871811_v148_n1_p137_Drisko http://hdl.handle.net/20.500.12110/paper_13871811_v148_n1_p137_Drisko |
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paper:paper_13871811_v148_n1_p137_Drisko2025-07-30T18:48:41Z One-pot synthesis of silica monoliths with hierarchically porous structure Zelcer, Andrés Soler Illia, Galo Juan de Avila Arturo Furfuryl alcohol Hierarchical pore structures Monolith Polymerization-induced phase separation Silica Acidic conditions Copolymer concentration Formation mechanism Furfuryl alcohol Macropore structure Macropores matrix Meso-pores Mesoporous walls Monolith One-pot synthesis Pluronic F-127 Poly(furfuryl alcohol) Polymerization-induced phase separation Pore templates Pore volume Porous structures Reactant ratios Silica monoliths Silica precursors Sol-Gel Reaction Submicrometer scale Surface area Templating Block copolymers Monolithic integrated circuits Silica Synthesis (chemical) Phase separation Poly(furfuryl alcohol) (PFA) and block copolymer Pluronic F127 were used as pore templates to create mechanically robust silica monoliths with a hierarchical and interconnected macro-mesoporous network in an easy, reproducible bimodal scale templating process. Control over the morphology was obtained by varying the reactant ratios. Phase separation on the submicrometer scale occurred when furfuryl alcohol was cationically polymerized and therefore became immiscible with the solvent and the silica precursor. Upon a subsequent sol-gel reaction, a silica-F127 matrix formed around the PFA spheres, leading to macropore structures with mesoporous walls. Surface areas of the final structures ranged from 500 to 989 m2 g-1 and a maximum pore volume of 4.5 mL g-1 was achieved. Under mildly acidic conditions, micelle-templated mesopores resulted. Interconnected macropores could be obtained by increasing the pH or the block copolymer concentration. The formation mechanism and the relationship between PFA, Pluronic F127 and acidity are discussed in detail. © 2011 Elsevier Inc. All rights reserved. Fil:Zelcer, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Soler-Illia, G.J.D.A.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13871811_v148_n1_p137_Drisko http://hdl.handle.net/20.500.12110/paper_13871811_v148_n1_p137_Drisko |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Furfuryl alcohol Hierarchical pore structures Monolith Polymerization-induced phase separation Silica Acidic conditions Copolymer concentration Formation mechanism Furfuryl alcohol Macropore structure Macropores matrix Meso-pores Mesoporous walls Monolith One-pot synthesis Pluronic F-127 Poly(furfuryl alcohol) Polymerization-induced phase separation Pore templates Pore volume Porous structures Reactant ratios Silica monoliths Silica precursors Sol-Gel Reaction Submicrometer scale Surface area Templating Block copolymers Monolithic integrated circuits Silica Synthesis (chemical) Phase separation |
| spellingShingle |
Furfuryl alcohol Hierarchical pore structures Monolith Polymerization-induced phase separation Silica Acidic conditions Copolymer concentration Formation mechanism Furfuryl alcohol Macropore structure Macropores matrix Meso-pores Mesoporous walls Monolith One-pot synthesis Pluronic F-127 Poly(furfuryl alcohol) Polymerization-induced phase separation Pore templates Pore volume Porous structures Reactant ratios Silica monoliths Silica precursors Sol-Gel Reaction Submicrometer scale Surface area Templating Block copolymers Monolithic integrated circuits Silica Synthesis (chemical) Phase separation Zelcer, Andrés Soler Illia, Galo Juan de Avila Arturo One-pot synthesis of silica monoliths with hierarchically porous structure |
| topic_facet |
Furfuryl alcohol Hierarchical pore structures Monolith Polymerization-induced phase separation Silica Acidic conditions Copolymer concentration Formation mechanism Furfuryl alcohol Macropore structure Macropores matrix Meso-pores Mesoporous walls Monolith One-pot synthesis Pluronic F-127 Poly(furfuryl alcohol) Polymerization-induced phase separation Pore templates Pore volume Porous structures Reactant ratios Silica monoliths Silica precursors Sol-Gel Reaction Submicrometer scale Surface area Templating Block copolymers Monolithic integrated circuits Silica Synthesis (chemical) Phase separation |
| description |
Poly(furfuryl alcohol) (PFA) and block copolymer Pluronic F127 were used as pore templates to create mechanically robust silica monoliths with a hierarchical and interconnected macro-mesoporous network in an easy, reproducible bimodal scale templating process. Control over the morphology was obtained by varying the reactant ratios. Phase separation on the submicrometer scale occurred when furfuryl alcohol was cationically polymerized and therefore became immiscible with the solvent and the silica precursor. Upon a subsequent sol-gel reaction, a silica-F127 matrix formed around the PFA spheres, leading to macropore structures with mesoporous walls. Surface areas of the final structures ranged from 500 to 989 m2 g-1 and a maximum pore volume of 4.5 mL g-1 was achieved. Under mildly acidic conditions, micelle-templated mesopores resulted. Interconnected macropores could be obtained by increasing the pH or the block copolymer concentration. The formation mechanism and the relationship between PFA, Pluronic F127 and acidity are discussed in detail. © 2011 Elsevier Inc. All rights reserved. |
| author |
Zelcer, Andrés Soler Illia, Galo Juan de Avila Arturo |
| author_facet |
Zelcer, Andrés Soler Illia, Galo Juan de Avila Arturo |
| author_sort |
Zelcer, Andrés |
| title |
One-pot synthesis of silica monoliths with hierarchically porous structure |
| title_short |
One-pot synthesis of silica monoliths with hierarchically porous structure |
| title_full |
One-pot synthesis of silica monoliths with hierarchically porous structure |
| title_fullStr |
One-pot synthesis of silica monoliths with hierarchically porous structure |
| title_full_unstemmed |
One-pot synthesis of silica monoliths with hierarchically porous structure |
| title_sort |
one-pot synthesis of silica monoliths with hierarchically porous structure |
| publishDate |
2012 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_13871811_v148_n1_p137_Drisko http://hdl.handle.net/20.500.12110/paper_13871811_v148_n1_p137_Drisko |
| work_keys_str_mv |
AT zelcerandres onepotsynthesisofsilicamonolithswithhierarchicallyporousstructure AT solerilliagalojuandeavilaarturo onepotsynthesisofsilicamonolithswithhierarchicallyporousstructure |
| _version_ |
1840323612609871872 |