Synthesis of multi-shelled ZnO hollow microspheres and their improved photocatalytic activity |
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| Authors: | Xiangyun Zeng Jiao Yang Liuxue Shi Linjie Li Meizhen Gao |
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| Affiliation: | 1.Key Laboratory for Magnetism and Magnetic Materials of Ministry of Education, Lanzhou University, 730000 Lanzhou, People’s Republic of China;2.School of Physical Science and Technology, Lanzhou University, Lanzhou, Gansu 730000, People’s Republic of China |
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| Abstract: | Herein, we report an effective, facile, and low-cost route for preparing ZnO hollow microspheres with a controlled number of shells composed of small ZnO nanoparticles. The formation mechanism of multiple-shelled structures was investigated in detail. The number of shells is manipulated by using different diameters of carbonaceous microspheres. The products were characterized by X-ray powder diffraction, scanning electron microscopy, and transmission electron microscopy. The as-prepared ZnO hollow microspheres and ZnO nanoparticles were then used to study the degradation of methyl orange (MO) dye under ultraviolet (UV) light irradiation, and the triple-shelled ZnO hollow microspheres exhibit the best photocatalytic activity. This work is helpful to develop ZnO-based photocatalysts with high photocatalytic performance in addressing environmental protection issues, and it is also anticipated to other multiple-shelled metal oxide hollow microsphere structures. |
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| Keywords: | ZnO Carbonaceous microspheres Hollow microspheres Photocatalytic |
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