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Synthesis of multi-shelled ZnO hollow microspheres and their improved photocatalytic activity.

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.

SUBMITTER: Zeng X

PROVIDER: S-EPMC4200476 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature

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Synthesis of multi-shelled ZnO hollow microspheres and their improved photocatalytic activity.

Zeng Xiangyun X Yang Jiao J Shi Liuxue L Li Linjie L Gao Meizhen M

Nanoscale research letters 20140904 1

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 holl ...[more]

PMID: 25328500

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