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تهیه نانو ذرات La0.6 Sr0.4MnO3 به کمک تابش ماکروویو و بررسی خواص فوتوکاتالیستی آنها

نوع مقاله : مقاله علمی پژوهشی

نویسندگان
دانشکده فیزیک، دانشگاه سمنان، سمنان، ایران
چکیده
در این مقاله نانو ذرات La0.6Sr0.4MnO3 با استفاده از روش تابش ماکروویو تهیه شده‌اند. خواص ساختاری، مغناطیسی، اپتیکی و فوتوکاتالیستی نانو ذرات با استفاده از الگوی پراش اشعه‌ی X (XRD)، میکروسکوپ الکترون عبوری (TEM) ،طیف مادون فرمز(FTIR)، مغناطش سنج نمونه ارتعاشی (VSM) و طیف سنجی فرابنفش– مرئی (UV vis) بررسی گردید. ثابت شبکه، حجم یاخته، گروه فضایی، زاویه و طول پیوند به کمک تحلیل پراش اشعه ی ایکس (XRD) بدست آمد. بررسی طیف جذب ذرات به کمک طیف سنج UV-Visible وجود گاف نواری شبیه نیم رساناها را در حدود ev 8/1 تایید کرد. بررسی خواص فوتوکاتالیستی نانوذرات، تخریب 83% رنگزای متیل اورانژ تحت تابش نور مرئی در مدت 50 دقیقه را نشان داد.
کلیدواژه‌ها

عنوان مقاله English

Synthesis of La0.6 Sr0.4MnO3 nanoparticles using microwave irradiation and investigation of its photocatalytic activity

نویسندگان English

Atieh Ramezan Zade Noshabadi
Mohammad Hossein Ehsani
Faculty of Physics, Semnan University, Semnan, Iran
چکیده English

In this paper nanoparticles, La0.6Sr0.4MnO3 via microwave radiation method is provided. The structural, magnetic, optical and photocatalyst properties by X-ray diffraction (XRD), Transmission electron microscope(TEM), Fourier transform infrared spectroscopy (FTIR), Vibrational sample magnetometer (VSM) and UV–Vis spectroscopy (UV-Vis) were studied. Lattice constants, cell volume, and space group as well as length and angle of bonds obtained by XRD analysis. Using the UV-Visible spectrometer, an examination of the particle absorption spectrum confirmed the existence of a band gap like semiconductors at about 1.8 eV. The degradation of nanoparticles on methyl orange dye under visible light evaluated about 83% in 50 minutes.

کلیدواژه‌ها English

Manganite
nanoparticles
optical properties
and band gap
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