Rapid preparation of hierarchically porous ceramic microspheres based on UV-curing-assisted molding |
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| Affiliation: | 1. School of Mechanical Engineering, Dongguan University of Technology, Dongguan, 523808, Guangdong, China;2. School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou, 510006, Guangdong, China;3. School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, 114051, China;1. Department of Mechanical Science, Division of Science and Technology, Graduate School of Sciences and Technology for Innovation, Tokushima University, 2-1 Minamijyousanjima, Tokushima 770-8506, Japan;2. Graduate School of Advanced Technology and Sciences, Tokushima University, 2-1 Minamijyousanjima, Tokushima 770-8506, Japan;3. Department of Mechanical Science, Graduate School of Technology, Industrial and Social Sciences, Tokushima University, 2-1 Minamijyousanjima, Tokushima 770-8506, Japan;1. Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta, Midori, Yokohama, 226-8503, Japan;2. Research Center for Structural Materials, National Institute for Materials Science (NIMS), Ibaraki, 305-0047, Japan;3. Institute of Energy and Climate Research, IEK-1: Materials Synthesis and Processing, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany;1. School of Materials Science and Engineering, Tianjin University, 300072, Tianjin, China;2. Shenzhen Chengyi Technology Co. Ltd, 518000, Shenzhen, China |
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| Abstract: | Ceramic microspheres have attracted significant attention, while the preparation of hierarchically porous ceramic microspheres with high porosity, good sphericity, and controllable size or shape in a short time remains a challenge. Herein, we developed a highly adaptable methodology for the preparation hierarchically porous ceramic microspheres with high porosity and favorable shape in a short time. The UV-curing assisted molding method combined with the Pickering emulsion method was utilized to prepare hierarchically porous ceramic microspheres. Under the irradiation of a UV-curing lamp (395 nm, 50 W), the Pickering emulsion can be cured within as short as 10 s. The microstructures of the three microspheres with different shapes were characterized by scanning electron microscopes (SEM). The as-prepared microspheres had a high sphericity, the interconnectivity of pores was as high as 54 %, and its porosity was as high as 73.4 % ± 3.0 %, while the density was quite low at ～ 1.02 g/cm3. |
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| Keywords: | Ceramic microspheres Hierarchically porous ceramics Pickering emulsion UV-curing |
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