期刊
ULTRASONICS SONOCHEMISTRY
卷 24, 期 -, 页码 230-237出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ultsonch.2014.11.012
关键词
Zirconia; Ultrasonication; Fractals; Small-angle neutron scattering; Small-angle X-ray scattering; Mesostructure
In the present work, we have studied for the first time the combined effect of both sonication and precipitation pH on the structure of amorphous zirconia gels synthesized from zirconium(IV) propoxide. The techniques of small-angle neutron and X-ray scattering (SANS and SAXS) and low temperature nitrogen adsorption provided the integral data on the changes in the microstructure and mesostructure of these materials caused by ultrasonic (US) treatment. Amorphous ZrO2.xH(2)O synthesized under ultrasonic treatment was found to possess a very structured surface, characterized by the surface fractal dimension 2.9-3.0, compared to 2.3-2.5 for the non US-assisted synthesis, and it was also found to possess a higher specific surface area, while the sizes of the primary particles remain unchanged. (C) 2014 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据