Design of Ordered Bimodal Mesoporous Silica Materials by Using a Mixed Fluorinated−Hydrogenated Surfactant-Based System
Mesoporous silica materials have been prepared using aqueous solutions of hydrogenated−fluorinated surfactant mixtures. The phase behavior of the C18H35(OC2H4)10−C6F15C2H4(OC2H4)11OH [RH 18(EO)10−RF 6(EO)11] mixture in aqueous solution was first established at the temperature at which the silica sou...
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| Veröffentlicht in: | Langmuir 2007-02, Vol.23 (4), p.2138-2144 |
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| creator | Michaux, F Blin, J. L Stébé, M. J |
| description | Mesoporous silica materials have been prepared using aqueous solutions of hydrogenated−fluorinated surfactant mixtures. The phase behavior of the C18H35(OC2H4)10−C6F15C2H4(OC2H4)11OH [RH 18(EO)10−RF 6(EO)11] mixture in aqueous solution was first established at the temperature at which the silica source is added, i.e., 20 or 40 °C. We have delimited the different phase domains. Concerning the mesostructured silica, whatever the temperature at which the silica source is added, mesoporous material with a hexagonal array of their channel is formed via a cooperative templating mechanism (CTM), if the content of RF 6(EO)11 in the surfactant mixture is lower than 50%. Moreover, when the silica source is added at 40 °C, the recovered materials exhibit a bimodal pore size distribution. The appearance of this bimodality has been related to the coexistence of hydrogenated micelles with fluorinated wormlike micelles. By contrast, the bimodality is not observed when the silica source is added at 20 °C. |
| doi_str_mv | 10.1021/la063103p |
| format | Article |
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L ; Stébé, M. J</creator><creatorcontrib>Michaux, F ; Blin, J. L ; Stébé, M. J</creatorcontrib><description>Mesoporous silica materials have been prepared using aqueous solutions of hydrogenated−fluorinated surfactant mixtures. The phase behavior of the C18H35(OC2H4)10−C6F15C2H4(OC2H4)11OH [RH 18(EO)10−RF 6(EO)11] mixture in aqueous solution was first established at the temperature at which the silica source is added, i.e., 20 or 40 °C. We have delimited the different phase domains. Concerning the mesostructured silica, whatever the temperature at which the silica source is added, mesoporous material with a hexagonal array of their channel is formed via a cooperative templating mechanism (CTM), if the content of RF 6(EO)11 in the surfactant mixture is lower than 50%. Moreover, when the silica source is added at 40 °C, the recovered materials exhibit a bimodal pore size distribution. The appearance of this bimodality has been related to the coexistence of hydrogenated micelles with fluorinated wormlike micelles. By contrast, the bimodality is not observed when the silica source is added at 20 °C.</description><identifier>ISSN: 0743-7463</identifier><identifier>EISSN: 1520-5827</identifier><identifier>DOI: 10.1021/la063103p</identifier><identifier>PMID: 17279706</identifier><identifier>CODEN: LANGD5</identifier><language>eng</language><publisher>Washington, DC: American Chemical Society</publisher><subject>Chemical Sciences ; Chemistry ; Colloidal state and disperse state ; Condensed Matter ; Electrochemistry ; Exact sciences and technology ; General and physical chemistry ; Inorganic chemistry ; Material chemistry ; Micelles. 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L</creatorcontrib><creatorcontrib>Stébé, M. J</creatorcontrib><title>Design of Ordered Bimodal Mesoporous Silica Materials by Using a Mixed Fluorinated−Hydrogenated Surfactant-Based System</title><title>Langmuir</title><addtitle>Langmuir</addtitle><description>Mesoporous silica materials have been prepared using aqueous solutions of hydrogenated−fluorinated surfactant mixtures. The phase behavior of the C18H35(OC2H4)10−C6F15C2H4(OC2H4)11OH [RH 18(EO)10−RF 6(EO)11] mixture in aqueous solution was first established at the temperature at which the silica source is added, i.e., 20 or 40 °C. We have delimited the different phase domains. Concerning the mesostructured silica, whatever the temperature at which the silica source is added, mesoporous material with a hexagonal array of their channel is formed via a cooperative templating mechanism (CTM), if the content of RF 6(EO)11 in the surfactant mixture is lower than 50%. Moreover, when the silica source is added at 40 °C, the recovered materials exhibit a bimodal pore size distribution. The appearance of this bimodality has been related to the coexistence of hydrogenated micelles with fluorinated wormlike micelles. By contrast, the bimodality is not observed when the silica source is added at 20 °C.</description><subject>Chemical Sciences</subject><subject>Chemistry</subject><subject>Colloidal state and disperse state</subject><subject>Condensed Matter</subject><subject>Electrochemistry</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Inorganic chemistry</subject><subject>Material chemistry</subject><subject>Micelles. Thin films</subject><subject>Physics</subject><subject>Porous materials</subject><issn>0743-7463</issn><issn>1520-5827</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNptkc1uEzEURi0EomlhwQug2YDEYsC_4_GyDYSAUrUorVhad8ae4DIZp_ZM1XkD1jwiT4JDomTDyvLn46Or7yL0iuD3BFPyoQVcMILZ5gmaEEFxLkoqn6IJlpzlkhfsBJ3GeIcxVoyr5-iESCqVxMUEjR9tdKsu8012FYwN1mQXbu0NtNmljX7jgx9itnStqyG7hN4GB23MqjG7ja5bZSl0j-nTrB18cF0CzJ9fv-ejCX5l_12z5RAaqHvo-vwC4jYYY2_XL9CzJqnsy_15hm5nn26m83xx9fnL9HyRAyeiz6EgxFRWQoWNaKpKKNFgaWzBgUpSlw3jKZRMFKpQTdlQAEWtEEJZhQ2r2Rl6t_P-gFZvgltDGLUHp-fnC73NMOWcCSUfSGLf7thN8PeDjb1eu1jbtoXOph50UaqSKi6P0jr4GINtDmaC9XYn-rCTxL7eS4dqbc2R3C8hAW_2AMQa2iZAV7t45ErBOOFl4vId51J_j4d3CD91IZkU-uZ6qads9u37V3qty6MX6qjv_BC61PN_BvwLYLWwUg</recordid><startdate>20070213</startdate><enddate>20070213</enddate><creator>Michaux, F</creator><creator>Blin, J. L</creator><creator>Stébé, M. 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J</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a415t-a611dbe7ab0d5fbb595f07de64a271c8f34bb57356969f8f2aa92e5559e90d3c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Chemical Sciences</topic><topic>Chemistry</topic><topic>Colloidal state and disperse state</topic><topic>Condensed Matter</topic><topic>Electrochemistry</topic><topic>Exact sciences and technology</topic><topic>General and physical chemistry</topic><topic>Inorganic chemistry</topic><topic>Material chemistry</topic><topic>Micelles. Thin films</topic><topic>Physics</topic><topic>Porous materials</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Michaux, F</creatorcontrib><creatorcontrib>Blin, J. L</creatorcontrib><creatorcontrib>Stébé, M. 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Concerning the mesostructured silica, whatever the temperature at which the silica source is added, mesoporous material with a hexagonal array of their channel is formed via a cooperative templating mechanism (CTM), if the content of RF 6(EO)11 in the surfactant mixture is lower than 50%. Moreover, when the silica source is added at 40 °C, the recovered materials exhibit a bimodal pore size distribution. The appearance of this bimodality has been related to the coexistence of hydrogenated micelles with fluorinated wormlike micelles. By contrast, the bimodality is not observed when the silica source is added at 20 °C.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><pmid>17279706</pmid><doi>10.1021/la063103p</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0002-6177-6203</orcidid></addata></record> |
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| source | American Chemical Society Journals |
| subjects | Chemical Sciences Chemistry Colloidal state and disperse state Condensed Matter Electrochemistry Exact sciences and technology General and physical chemistry Inorganic chemistry Material chemistry Micelles. Thin films Physics Porous materials |
| title | Design of Ordered Bimodal Mesoporous Silica Materials by Using a Mixed Fluorinated−Hydrogenated Surfactant-Based System |
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