کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1505828 993774 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Hierarchical porous materials: Internal structure revealed by argon ion-beam cross-section polishing, HRSEM and AFM
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Hierarchical porous materials: Internal structure revealed by argon ion-beam cross-section polishing, HRSEM and AFM
چکیده انگلیسی

High-resolution scanning electron microscopy coupled with argon ion-beam cross-section polishing and atomic force microscopy were used to reveal details about the interconnectivity of meso- and macroporous networks in silica hierarchical porous material. The material studied has ordered macro- and mesoporosity as well as a disordered microporosity that are created using organic templating agents. Latex spheres template the macro- porosity, mesophase self-assembly of block co-polymers template the mesoporosity and individual polymer chains template the microporosity. By polishing this composite material with an argon ion beam it is possible to reveal the internal structure with minimal structural damage. Direct imaging of the mesoporous network within such cross sections is possible using high-resolution scanning electron microscopy. These observations demonstrate a lack of interconnectivity between the mesoporous and macroporous networks.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Sciences - Volume 13, Issue 4, April 2011, Pages 745–749
نویسندگان
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