Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5438763 | Ceramics International | 2016 | 6 Pages |
Abstract
The SiC-TiO2 hybrid aerogels were obtained from polycarbosilane (PCS) and tetrabutyltitanate (TBT) as precursors using supercritical drying and polymer derived ceramics route. The polymer to ceramic conversion and the crystallization behavior were studied by X-ray diffraction (XRD) and transmission electron microscopy (TEM), suggesting the preceramic aerogels converted to the SiC-TiO2 ceramic aerogels through pyrolysis process at different temperatures. At 1200 °C, the ceramic aerogels were homogeneous with well-distributed element components, composed of rutile TiO2 and the β-SiC crystalline phases. The results show that the SiC-TiO2 ceramic aerogels with netwoks structure have 23.36 nm average pore size, high surface area (58 m2/g) and pore volume (0.22 cm3/g).
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Peng Chu, Hongli Liu, Yajing Li, Haiyuan Zhang, Jiadong Li,