Structural Characterization and Magnetic Properties of Undoped and Ti-Doped ZnO Nanoparticles Prepared by Modified Oxalate Route: An Advance Study
| Autor: | Fomogne Cyrille Yollande, Josepha Foba-Tendo, Beckley Victorine Namondo, Ekane Peter Etape, Lambi John Ngolui, Marius Borel Nguefack Nguimezong |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
synthesis ZnO nanoparticles chemistry.chemical_element Nanoparticle Zinc Ti-Doped Oxalate law.invention Nanomaterials chemistry.chemical_compound Crystallinity chemistry law Calcination magnetic properties Fourier transform infrared spectroscopy nanomaterials Nuclear chemistry Wurtzite crystal structure |
| Popis: | Ti-doped zinc oxide and pure zinc oxide nanoparticles were synthesized by a modified oxalate route usingAverrhoa carambolafruit juice as a natural source of oxalate. The characteristics of the precursors have been investigated by FTIR, TGA, and XRD. The results from the investigation revealed that the precursors are zinc oxalate and Ti-doped zinc oxalate which readily decompose at 450°C. The as-prepared precursors were calcined at 450°C for 4 hours, and the decomposition products have been characterized by XRD, SEM, EDX, and VSM. XRD results revealed crystallinity with hexagonal wurtzite structure, while the average grain size was found to be 26 nm for Ti-doped ZnO and 29 nm for ZnO, using calculations based on Debye-Scherrer equation. Furthermore, the morphological studies by SEM showed particle agglomeration, while the presence of Ti3+in the zinc oxide lattice is indicated by EDS analysis. Finally the hysteresis loop from VSM results shows that Ti-doped ZnO exhibits ferromagnetism. The precursors were identified as the expected metal oxalates, and the decomposition products were found to be pure ferromagnetic nanoparticles. |
| Databáze: | OpenAIRE |
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