Microwave-assisted synthesis of perovskite ReFeO3 (Re: La, Sm, Eu, Gd) photocatalyst
| Autor: | Huoming Shu, Jianlin Ding, Xiaomeng Lü, Hui Zhang, Jimin Xie |
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| Rok vydání: | 2010 |
| Předmět: |
Aqueous solution
Materials science Scanning electron microscope Mechanical Engineering Analytical chemistry Condensed Matter Physics chemistry.chemical_compound chemistry Mechanics of Materials Transmission electron microscopy Specific surface area Rhodamine B Photocatalysis General Materials Science Fourier transform infrared spectroscopy Perovskite (structure) |
| Zdroj: | Materials Science and Engineering: B. 171:31-34 |
| ISSN: | 0921-5107 |
| Popis: | A novel microwave-assisted method was applied to the synthesis of perovskite-type samples ReFeO 3 (Re: La, Sm, Eu, Gd). Rare earth nitrates were blended with Fe(NO 3 ) 3 ·9H 2 O to form the precursors, active carbon was used to enhance microwave absorption, polyvinyl alcohol (PVA) and urea were introduced as the inhibitor and the homogeneous precipitator, respectively. The whole assembly was then exposed to microwave to complete the reaction. Compared with traditional methods, samples prepared by this microwave-assisted method are nanosized powder. All the samples were characterized by X-ray diffraction (XRD), UV-visible diffuse reflection spectroscopy (UV-vis DRS), Brunauer-Emmett-Teller (BET) specific surface area measurements, Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Photocatalytic property was evaluated by degradation of Rhodamine B (RhB) aqueous solution under visible light irradiation. All these samples exhibit good photocatalytic activity due to their perovskite structure. |
| Databáze: | OpenAIRE |
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