کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1334089 979140 2005 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A surface modification scheme for incorporation of nanocrystals in mesoporous silica matrix
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
A surface modification scheme for incorporation of nanocrystals in mesoporous silica matrix
چکیده انگلیسی

sA simple surface modification scheme is proposed to introduce various nanocrystals including oil-soluble Au nanocrystals, water-soluble Au nanocrystals and magnetic γ-Fe2O3 nanocrystals into mesoporous silica matrix. Disordered mesostructured cellular foam (MCF) and well-ordered FDU-12 were used as matrix materials. Surface modification of mesoporous silica with particular ligands enhanced the interaction between the matrix and nanocrystals, thereby facilitating the incorporation. High loading (up to 20% in weight) and uniform distribution of nanocrystals in mesopores were observed by transmission electron microscopy (TEM). The physical and chemical properties of nanocrystals were well maintained during this process. Moreover, the obtained composites were still highly porous with pore volume more than 1.0 cm3/g, as evidenced by N2 adsorption experiments.

TEM micrograph of Au nanocrystals in FDU-12 functionalized with amine groups on inner pore surfaceFigure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Solid State Chemistry - Volume 178, Issue 10, October 2005, Pages 2980–2986
نویسندگان
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