کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1786490 1023417 2013 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microwave-assisted synthesis of nanoparticulate perovskite LaFeO3 as a high active visible-light photocatalyst
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Microwave-assisted synthesis of nanoparticulate perovskite LaFeO3 as a high active visible-light photocatalyst
چکیده انگلیسی

Single phase perovskite LaFeO3 nanoparticles are directly synthesized by a one-step microwave-assisted route without additional high temperature calcination process. The prepared sample is characterized by X-ray diffraction (XRD), field emission scanning microscope (FE-SEM), Brunauer–Emmett–Teller (BET) specific surface area measurement, diffuse reflectance spectroscopy (DRS) and Fourier transform infrared spectroscopy (FTIR). XRD and SEM show that the prepared LaFeO3 is single phase perovskite and sphere-like shape. The DRS result shows that the prepared LaFeO3 has strong visible-light absorption and an optical absorption onset of 525 nm, corresponding to an optical band gap of 2.36 eV. The photocatalytic experiment demonstrates that LaFeO3 is highly visible-light photocatalytic active for the degradation of methylene blue. It is suggested that the narrow band gap and the strong visible-light absorption are responsible for the high visible-light photocatalytic activity of the prepared LaFeO3.


► Single phase LaFeO3 is synthesized by a one-step microwave-assisted route.
► LaFeO3 has high visible-light photocatalytic active.
► Both the narrow band gap and the strong visible-light absorption are responsible.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Applied Physics - Volume 13, Issue 2, March 2013, Pages 340–343
نویسندگان
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