کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1671912 1008925 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of sol aging on mesoporous silica thin films organization
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Effects of sol aging on mesoporous silica thin films organization
چکیده انگلیسی

Cetyltrimethylammonium bromide (CTAB) templated mesoporous silica thin films were deposited on glass slides by evaporation-induced self-assembly (EISA) process using a dip-coating method. The effects of sol aging on the mesophase structure of the thin films organization were investigated. Identification of the structures was accomplished by coupling X-ray diffraction (XRD) and transmission electron microscope (TEM) investigations, and corresponding sol was characterized by 29Si solution state nuclear magnetic resonance (29Si NMR) and UV–Vis spectrophotometer for studying the mesophase structure evolution. Results indicate that sol aging has great effects on the mesophase structure of the films organization, which includes degree of order and phase transformation of mesoporous silica thin films. To obtain a better understanding of the effects of sol aging on the mesophase structure, the theories of apparent mass fractal dimension and charge density matching were introduced to explain the self-assembly process.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 515, Issue 23, 14 September 2007, Pages 8376–8380
نویسندگان
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