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A simple synthesis and characterization of LaMO3 (M=Al, Co, Fe, Gd)perovskites via chemical co-precipitation method |
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| รหัสดีโอไอ | |
| Creator | 1. Wankassama Haron 2. Anurat Wisitsoraat 3. Uraiwan Sirimahachai 4. Sumpun Wongnawa |
| Title | A simple synthesis and characterization of LaMO3 (M=Al, Co, Fe, Gd)perovskites via chemical co-precipitation method |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2561 |
| Journal Title | Songklanakarin Journal of Science and Technology |
| Journal Vol. | 40 |
| Journal No. | 3 |
| Page no. | 484 |
| Keyword | La-based perovskite, LaAlO3, LaCoO3, LaFeO3, LaGdO3, chemical co-precipitation method |
| URL Website | http://rdo.psu.ac.th/sjstweb/index.php |
| ISSN | 0125-3395 |
| Abstract | Nanocrystalline LaMO3 (M = Al, Fe, Co, Gd) perovskites were synthesized by the co-precipitation method using metalnitrate and carbonate salts as starting materials. The products were characterized with X-ray diffractometer (XRD), energydispersiveX-ray spectrometer (EDX), scanning electron microscopy (SEM), transmission electron microscopy (TEM), BrunauerEmmett-Teller(BET) specific surface area measurement, and UV-vis diffuse reflectance spectroscopy (DRS). The XRD patternsconfirmed the formation of the perovskite phase. The SEM micrographs indicated that perovskite samples were nanosizedparticles with morphology containing porosity due to inter-particle voids. The measured pHpzc of LaAlO3, LaCoO3, LaFeO3, andLaGdO3 in this work were 8.6, 9.2, 9.0, and 8.1, respectively. From the DRS spectra, the band gap energies of LaAlO3, LaCoO3,LaFeO3, and LaGdO3 were calculated as 2.60, 1.50, 2.00, and 2.90 eV, respectively. The preparation of LaMO3 (M = Al, Fe, Co,Gd) perovskites in this work have several advantages such as simplicity, low cost, and no waste compared with other methods. |
