Suspension Plasma Spray Fabrication of Nanocrystalline Titania Hollow Microspheres for Photocatalytic Applications
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- 作者：Kun Ren ; Yi Liu ; Xiaoyan He ; Hua Li
- 关键词：hollow spheres ; magnetic microspheres ; nano titania ; photocatalytic performances ; suspension plasma spray
- 刊名：Journal of Thermal Spray Technology
- 出版年：2015
- 出版时间：October 2015
- 年：2015
- 卷：24
- 期：7
- 页码：1213-1220
- 全文大小：1,634 KB
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27.J. Gamage and Z. Zhang, Applications of Photocatalytic Disinfecti - 作者单位：Kun Ren (1)
Yi Liu (1)
Xiaoyan He (1)
Hua Li (1)
1. Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China - 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Surfaces and Interfaces and Thin Films
Tribology, Corrosion and Coatings
Materials Science
Characterization and Evaluation Materials
Operating Procedures and Materials Treatment
Analytical Chemistry - 出版者：Springer Boston
- ISSN：1544-1016
文摘
Hollow inorganic microspheres with controlled internal pores in close-cell configuration are usually constructed by submicron-sized particles. Fast and efficient large-scale production of the microspheres with tunable sizes yet remains challenging. Here, we report a suspension plasma spray route for making hollow microspheres from nano titania particles. The processing permits most nano particles to retain their physiochemical properties in the as-sprayed microspheres. The microspheres have controllable interior cavities and mesoporous shell of 1-3 μm in thickness. Spray parameters and organic content in the starting suspension play the key role in regulating the efficiency of accomplishing the hollow sphere structure. For the ease of collecting the spheres for recycling use, ferriferous oxide particles were used as additives to make Fe3O4-TiO2 hollow magnetic microspheres. The spheres can be easily recycled through external magnetic field collection after each time use. Photocatalytic anti-bacterial activities of the hollow spheres were assessed by examining their capability of degrading methylene blue and sterilizing Escherichia coli bacteria. Excellent photocatalytic performances were revealed for the hollow spheres, giving insight into their potential versatile applications. Keywords hollow spheres magnetic microspheres nano titania photocatalytic performances suspension plasma spray