Magnetic yolk-shell structured anatase-based microspheres loaded with Au nanoparticles for heterogeneous catalysis
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- 作者：Chun Wang (1)
Junchen Chen (1)
Xinran Zhou (1)
Wei Li (1)
Yong Liu (1)
Qin Yue (1)
Zhaoteng Xue (1)
Yuhui Li (1)
Ahmed A. Elzatahry (2) (3)
Yonghui Deng (1)
Dongyuan Zhao (1)
1. Department of Chemistry ; Laboratory of Advanced Materials ; State Key Laboratory of Molecular Engineering of Polymers ; and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials ; Fudan University ; Shanghai ; 200433 ; China
2. Department of Chemistry ; College of Science ; King Saud University ; Riyadh ; 11451 ; Saudi Arabia
3. Polymer Materials Research Department ; Advanced Technology and New Materials Research Institute ; City for Scientific Research and Technology Applications ; New Borg El-Arab City ; Alexandria ; 21934 ; Egypt - 关键词：magnetic microspheres ; titania ; yolk ; shell structure ; gold nanoparticles ; heterogeneous catalysis
- 刊名：Nano Research
- 出版年：2015
- 出版时间：January 2015
- 年：2015
- 卷：8
- 期：1
- 页码：238-245
- 全文大小：1,485 KB
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- 刊物主题：Chinese Library of Science
Chemistry
Nanotechnology - 出版者：Tsinghua University Press, co-published with Springer-Verlag GmbH
- ISSN：1998-0000
文摘
Magnetic yolk-shell structured anatase-based microspheres were fabricated through successive and facile sol-gel coating on magnetite particles, followed by annealing treatments. Upon loading with gold nanoparticles, the obtained functional magnetic microspheres as heterogeneous catalysts showed superior performance in catalyzing the epoxidation of styrene with extraordinary high conversion (89.5%) and selectivity (90.8%) towards styrene oxide. It is believed that the construction process of these fascinating materials features many implications for creating other functional nanocomposites.