Production and characterization of ZnO nanoparticles and porous particles by ultrasonic spray pyrolysis using a zinc nitrate precursor

• Published in: International journal of minerals, metallurgy and materials metallurgy and materials, 2012-07, Vol.19 (7), p.651-656
• Main Authors: Ebin, Burcak, Arig, Elif, Ozkal, Burak, Gurmen, Sebahattin
• Format: Article
• Language: English
• Subjects: Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Composites; Corrosion and Coatings; Crystal structure; Crystallites; Electron microscopy; Glass; High temperature; Materials Science; Metallic Materials; Nanoparticles; Natural Materials; Nitrates; Precursors; Pyrolysis; Sintering (powder metallurgy); Spray pyrolysis; Surfaces and Interfaces; Thin Films; Tribology; Ultrasonic testing; X-ray diffraction; Zinc; Zinc oxide; ZnO纳米粒子; 制备; 前体; 反应温度; 多孔颗粒; 硝酸锌; 纳米ZnO; 超声喷雾热分解
• ISSN: 1674-4799; 1869-103X
• DOI: 10.1007/s12613-012-0608-0

ZnO nanoparticles and porous particles were produced by an ultrasonic spray pyrolysis method using a zinc nitrate precursor at various temperatures under air atmosphere. The effects of reaction temperature on the size and morphology of ZnO particles were investi- gated. The samples were characterized by energy dispersive spectroscopy, X-ray diffraction, transmission electron microscopy, and scanning electron microscopy. ZnO particles were obtained in a hexagonal crystal structure and the crystallite shapes changed from spherical to hex- agonal by elevating the reaction temperature. The crystallite size grew by increasing the temperature, in spite of reducing the residence time in the heated zone. ZnO nanoparticles were obtained at the lowest reaction temperature and ZnO porous particles, formed by aggregation of ZnO nanoparticles due to effective sintering, were prepared at higher temperatures. The results showed that the properties of ZnO particles can be controlled by changing the reaction temperature in the ultrasonic spray pyrolysis method.