Structural Characterization and Magnetic Properties of Undoped and Ti-Doped ZnO Nanoparticles Prepared by Modified Oxalate Route

• Published in: Journal of nanomaterials Vol. 2018; no. 2018; pp. 1 - 9
• Main Authors: Yollande, Fomogne Cyrille, Namond, Beckley Victorine, Lambi, John Ngolui, Foba, Josepha, Etape, Ekane Peter, Nguimezong, Marius Borel Nguefack
• Format: Journal Article
• Language: English
• Published: Cairo, Egypt Hindawi Publishing Corporation 01.01.2018; Hindawi; Hindawi Limited
• Subjects: Chemistry; Chloride; Debye-Scherrer method; Decomposition; Ferromagnetism; Fourier transforms; Hysteresis loops; Ligands; Magnetic properties; Metal oxides; Methods; Morphology; Nanomaterials; Nanoparticles; Particle size; Precursors; Semiconductors; Structural analysis; Titanium; Wurtzite; Zinc oxide; Zinc oxides
• ISSN: 1687-4110; 1687-4129
• DOI: 10.1155/2018/9072325

Ti-doped zinc oxide and pure zinc oxide nanoparticles were synthesized by a modified oxalate route using Averrhoa carambola fruit 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.