Journal
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 41, Issue 16, Pages 232-238Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2021.09.033
Keywords
Ceramic microspheres; Hierarchically porous ceramics; Pickering emulsion; UV-curing
Categories
Funding
- China Postdoctoral Sci-ence Foundation [402200012]
- Guangdong Provincial Science Fund for Distinguished Young Scholars [2020B1515020059]
- National Natural Science Foundation of China (NSFC) [91960102, 51872052]
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A new method has been developed for the preparation of hierarchically porous ceramic microspheres with high porosity and favorable shape in a short time, featuring high sphericity and porosity, while maintaining a low density.
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 inter connectivity 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 similar to 1.02 g/cm(3).
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