کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
68978 48527 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A sonochemical route to visible-light-driven high-activity BiVO4 photocatalyst
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
A sonochemical route to visible-light-driven high-activity BiVO4 photocatalyst
چکیده انگلیسی

Visible-light-induced BiVO4 photocatalyst with monoclinic scheelite structure has been successfully synthesized via a facile sonochemical method. The as-prepared BiVO4 photocatalyst exhibited relatively high surface areas, consisting of primary nanocrystals with average size of ca. 50 nm. The BiVO4 nanocrystals showed a strong absorption in the visible light region and the band gap was estimated to be ca. 2.45 eV, representing an obvious blue-shift compared with that of the bulk sample. The photocatalytic activities were also evaluated by decolorization of methyl orange under visible light (λ > 400 nm). The results indicate that the photodegradation rate of as-prepared BiVO4 nanocrystals is quite high, up to 90% in 30 min, which is much better than that of the reference sample prepared by solid-state reaction (ca. 8%) and the standard photocatalyst P25 (ca. 6%) under the same conditions.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Catalysis A: Chemical - Volume 252, Issues 1–2, 1 June 2006, Pages 120–124
نویسندگان
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