کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
76919 | 49152 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation of hierarchical porous silica and its optical property
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Preparation of hierarchical porous silica and its optical property Preparation of hierarchical porous silica and its optical property](/preview/png/76919.png)
چکیده انگلیسی
Inverse opal having mesoporous silica walls has been synthesized using close-packed polystyrene beads and octadecyltrimethylammonium chloride as a templates, and tetramethoxysilane as a silica precursor. The synthesized bimodal porous silica was characterized by XRD, N2 sorption, SEM and TEM. Hollow silica with inverted opaline structure had a macroporous diameter of 390 nm and a wall thickness of approximately 30 nm, and the mesoporous silica walls had a specific surface area of 367 m2/g, a mesopore diameter of 2.9 nm and a wall thickness of 1.8 nm. The refractive index (n) of this material was found be 1.05, which is lower than that of silica (n = 1.44) and also close to that of the air.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microporous and Mesoporous Materials - Volume 96, Issues 1–3, 26 November 2006, Pages 205–209
Journal: Microporous and Mesoporous Materials - Volume 96, Issues 1–3, 26 November 2006, Pages 205–209
نویسندگان
Satoru Fujita, Hideyuki Nakano, Masahiko Ishii, Hiroshi Nakamura, Shinji Inagaki,