Fabrication and Catalytic Performance of Highly Stable Multifunctional Core鈥揝hell Zeolite Composites
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- 作者：Xiaofang Wang ; Yuanzheng Cui ; Yang Wang ; Xiaowei Song ; Jihong Yu
- 刊名：Inorganic Chemistry
- 出版年：2013
- 出版时间：October 7, 2013
- 年：2013
- 卷：52
- 期：19
- 页码：10708-10710
- 全文大小：234K
- 年卷期：v.52,no.19(October 7, 2013)
- ISSN：1520-510X
文摘
Multifunctional Fe3O4@SiO2鈥揂u@silicalite-1 core鈥搒hell magnetic zeolite composites were fabricated by combining a series of sol鈥揼el process and vapor-phase transfer of silicalite-1 zeolite nanocrystal-seeded silica shells. The obtained composite has high magnetization (32.00 emu/g), stably confined and active gold nanoparticles (ca. 15 nm), and a hierarchical silicalite-1 outer shell. The core鈥搒hell composite exhibits a high efficiency of magnetic separability, excellent catalytic performance, and reusability for the reduction of 4-nitrophenol with conversion of 98% in 12 min. Moreover, it preserves a good stability after a high-temperature hydrothermal treatment.