Independent Fine-Tuning of the Intrawall Porosity and Primary Mesoporosity of SBA-15
| العنوان: | Independent Fine-Tuning of the Intrawall Porosity and Primary Mesoporosity of SBA-15 |
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| المؤلفون: | Nina V. Reichhardt, Mika Lindén, Viveka Alfredsson, Jan-Henrik Smått, Tomas Kjellman, Motolani Sakeye |
| المصدر: | Chemistry of Materials. 25:1989-1997 |
| بيانات النشر: | American Chemical Society (ACS), 2013. |
| سنة النشر: | 2013 |
| مصطلحات موضوعية: | Fine-tuning, Solid-state chemistry, Morphology (linguistics), Materials science, Hexagonal crystal system, General Chemical Engineering, General Chemistry, Mesoporous silica, Chemical engineering, Materials Chemistry, Organic chemistry, Particle, Porosity, Mesoporous material |
| الوصف: | We present a study in which the intrawall porosity and primary mesoporosity of SBA-15 are independently controlled by modifying the strength of the molecular interaction that governs the formation of the material. The interactions are targeted at specific times during the process of formation, which results in selective tuning of the porosity, while other characteristics of the SBA-15 material are retained. We show that the intrawall porosity can be considerably reduced by addition of NaI, but not NaCl, and that the shape of the primary mesopores can be influenced by a decrease in temperature, while the two-dimensional hexagonal structure and the particle morphology and size remain unchanged. The timing of the “tuning event” is imperative. We show that a decrease in intrawall porosity by addition of NaI is generic to Pluronic-based mesoporous silica syntheses. This work demonstrates that the material characteristic of mesoporous silica is not necessarily restricted by the initial synthesis conditions as t... |
| تدمد: | 1520-5002 0897-4756 |
| DOI: | 10.1021/cm4009442 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::bc5840de5490e3bd43313b158b340570 https://doi.org/10.1021/cm4009442 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi...........bc5840de5490e3bd43313b158b340570 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15205002 08974756 |
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| DOI: | 10.1021/cm4009442 |