Preparation of Porous Silica Microspheres by Polymerization-Induced Colloid Aggregation Method

Jia Li He; Xiu Hua Chen; Wen Jie Zhu; Wen Hui Ma; Yong Yin Xiao; Jiao Li; Hui Zhang

doi:10.4028/www.scientific.net/AMR.898.132

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 898Preparation of Porous Silica Microspheres by...

Preparation of Porous Silica Microspheres by Polymerization-Induced Colloid Aggregation Method

Abstract:

The UF resin/SiO₂ composites microspheres with particle size of 2μm were successfully prepared by polymerization of silica sol from base-catalyzed hydrolysis of tetraethyl orthosilicate, and urea-formaldehyde via the PICA approach, and then calcination in air to remove organic UF resin and yield porous silica microspheres. The samples were characterized by Zetasizer NanoZS Instrument, SEM and Nitrogen adsorption-desorption isotherms. The results showed that the synthesized porous silica microspheres with a BET surface area of 67.01m²/g, a BJH average pore size diameter of 37.32 nm and a total pore volume of 0.69cm³/g, respectively.

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Periodical:

Advanced Materials Research (Volume 898)

Pages:

132-135

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.898.132

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Online since:

February 2014

Authors:

Jia Li He, Xiu Hua Chen*, Wen Jie Zhu, Wen Hui Ma, Yong Yin Xiao, Jiao Li, Hui Zhang

Keywords:

PICA Method, Porous Silica Microspheres, UF Resin/SiO₂ Composites Microspheres

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