کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1526203 995367 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and characterization of nanocrystalline and mesostructured CeO2: Influence of the amino acid template
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Synthesis and characterization of nanocrystalline and mesostructured CeO2: Influence of the amino acid template
چکیده انگلیسی

Mesostructured and nanocrystalline cerium oxide materials with a coral-like structure were self-assembled using amino acids as templates. The samples were characterized by N2-adsorption, XRD, SEM, and Raman spectroscopy. The influence of the amino acid structure and composition on the final CeO2 nanodomain structure and crystal size was investigated. The XRD and Raman data indicate a direct correlation between the amino and carboxylic group positions in the structure of linear-, branched, and ring-amino acids and the crystal size of CeO2, which ranges from 6 to 30 nm in diameter. In contrast, the final coral-like nanodomain structures are independent on the amino acid used as template. The results demonstrate a synthetic method for hierarchical architectures in which the final CeO2 crystal size can be controlled by the use of amino acids in the self-assembly process.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 114, Issue 1, 15 March 2009, Pages 462–466
نویسندگان
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