کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1262003 971842 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ce1–xSmxO2–δ-attapulgite nanocomposites: synthesis via simple microwave approach and investigation of its catalytic activity
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Ce1–xSmxO2–δ-attapulgite nanocomposites: synthesis via simple microwave approach and investigation of its catalytic activity
چکیده انگلیسی

Ce1–xSmxO2–δ-attapulgite (ATP) nanocomposites were successfully prepared via a facile microwave approach. This was a facile and rapid process requiring only low power of microwave irradiation (160 W). The catalytic performance of the Ce1–xSmxO2–δ-ATP nanocomposites with different Sm contents for degradation of methylene blue (MB) was systematically evaluated. The Ce1–xSmxO2–δ-ATP nanocomposites showed enhanced catalytic activities compared with pure CeO2/ATP. Specifically, the catalytic activities of Ce1–xSmxO2–δ-ATP nanocomposites increased with increase in Sm content from x=0.0 to 0.3. The introduction of an optimal amount of Sm3+ into CeO2 contributed to the formation of structure defects and electronic defects in the oxide lattice, which could increase concentration of oxygen vacancies. However, further increasing Sm content to x=0.4 induced the formation of more agglomerates, leading to decreased catalytic activity. It was believed that this facile, rapid microwave-assisted strategy was scalable and could be applied to synthesize other nanocomposites for different applications.

Graphical AbstractTEM images of Ce1–xSmxO2–δ-ATP (x=0.3)Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Rare Earths - Volume 31, Issue 12, December 2013, Pages 1157–1162
نویسندگان
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