期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 55, 期 25, 页码 7081-7085出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201600799
关键词
atomic layer depositon; heterogeneous catalysis; hydrogenation; metal-oxide interfaces; nanocatalysis
资金
- National Natural Science Foundation of China [21403271, 21173248, 21403272]
- Hundred Talents Program of the Chinese Academy of Sciences
- Hundred Talents Program of Shanxi Province
- Natural Science Foundation of Shanxi Province [2014110121, 2015021046]
Ideal heterogeneous tandem catalysts necessitate the rational design and integration of collaborative active sites. Herein, we report on the synthesis of a new tandem catalyst with multiple metal-oxide interfaces based on a tube-in-tube nanostructure using template-assisted atomic layer deposition, in which Ni nanoparticles are supported on the outer surface of the inner Al2O3 nanotube (Ni/Al2O3 interface) and Pt nanoparticles are attached to the inner surface of the outer TiO2 nanotube (Pt/TiO2 interface). The tandem catalyst shows remarkably high catalytic efficiency in nitrobenzene hydrogenation over Pt/TiO2 interface with hydrogen formed in situ by the decomposition of hydrazine hydrate over Ni/Al2O3 interface. This can be ascribed to the synergy effect of the two interfaces and the confined nanospace favoring the instant transfer of intermediates. The tube-in-tube tandem catalyst with multiple metal-oxide interfaces represents a new concept for the design of highly efficient and multifunctional nanocatalysts.
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