Citation: Wei-Wei Cai, Hui Yang, Xing-Zhong Guo. A facile one-step route to synthesize titania hollow microspheres with incontinuous multicavities[J]. Chinese Chemical Letters, ;2014, 25(3): 441-446. doi: 10.1016/j.cclet.2013.12.002 shu

A facile one-step route to synthesize titania hollow microspheres with incontinuous multicavities

1.
Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310024, China

Corresponding author: Xing-Zhong Guo,
Received Date: 29 July 2013
Available Online: 21 November 2013
Fund Project: This work is supported by the National Natural Science Foundation of China (No. 51372225) (No. 51372225)Zhejiang Provincial Natural Science Foundation of China (No. LY13B010001). (No. LY13B010001)

The titania hollow microspheres with incontinuous multicavities were successfully fabricated via an oil/water (O/W) emulsion process accompanied by sol-gel reaction in the presence of polyvinylpyrrolidone (PVP). In the one-step route, the addition of PVP to the tetrabutyl titanate (TBT) 1-octanol solution as the oil phase of the O/W emulsion clearly expands the size of the cavities inside the microspheres. The npropanol and atoleine alters the polarity of the oil phase to affect the interior structure significantly. The Span 80 is used as a stabilizer to preserve spherical shape. A preliminary mechanism based on phaseseparation for the structural evolution of titania hollow microspheres with multicavities is suggested. Zirconia and alumina hollow microspheres with incontinuous multicavities can also be prepared by this one-step route successfully.
- Hollow microspheres,
- Multicavities,
- Phase separation,
- Titania
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