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A Tandem Catalyst with Multiple Metal Oxide Interfaces Produced by Atomic Layer Deposition
Author(s) -
Ge Huibin,
Zhang Bin,
Gu Xiaomin,
Liang Haojie,
Yang Huimin,
Gao Zhe,
Wang Jianguo,
Qin Yong
Publication year - 2016
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201600799
Subject(s) - catalysis , nanomaterial based catalyst , tandem , atomic layer deposition , oxide , materials science , nanotechnology , nanotube , hydrazine (antidepressant) , chemical engineering , nanoparticle , heterogeneous catalysis , nanostructure , layer (electronics) , inorganic chemistry , chemistry , carbon nanotube , organic chemistry , composite material , metallurgy , chromatography , engineering
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 Al 2 O 3 nanotube (Ni/Al 2 O 3 interface) and Pt nanoparticles are attached to the inner surface of the outer TiO 2 nanotube (Pt/TiO 2 interface). The tandem catalyst shows remarkably high catalytic efficiency in nitrobenzene hydrogenation over Pt/TiO 2 interface with hydrogen formed in situ by the decomposition of hydrazine hydrate over Ni/Al 2 O 3 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.