Polymorphism and Optical–Vibration Properties of MnV2O6·nH2O (n = 0, 2, 4) Prepared by Microwave Irradiation
| Autor: | Anderson Dias, Roberto L. Moreira, Jéssica I. Viegas |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
010405 organic chemistry chemistry.chemical_element General Chemistry Manganese 010402 general chemistry Condensed Matter Physics 01 natural sciences 0104 chemical sciences Catalysis symbols.namesake chemistry Polymorphism (materials science) Transmission electron microscopy Anhydrous symbols Physical chemistry General Materials Science Orthorhombic crystal system Raman spectroscopy Monoclinic crystal system |
| Zdroj: | Crystal Growth & Design. 19:3233-3243 |
| ISSN: | 1528-7505 1528-7483 |
| Popis: | Polymorphism and optical–vibration properties of manganese vanadates were investigated as a function of the microwave irradiation conditions. Single-phase, impurity-free materials were prepared and described as monoclinic MnV2O6·H2O (C2/c, No. 15), orthorhombic MnV2O6·2H2O (Pnma, No. 62), and monoclinic MnV2O6 (C2/m, No. 12). The structural, morphological, and optical–vibration properties of the hydrated and anhydrous phases were investigated by X-ray diffraction, transmission electron microscopy, and Raman spectroscopy. Vibrational studies for these materials are reported for the first time. The chosen synthesis methodology was shown to be a less time- and energy-consuming process compared to previous studies. The results of this work complement the knowledge about manganese vanadates and improve the possibilities of future applications for these materials as catalysts in several processes. |
| Databáze: | OpenAIRE |
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