A Tandem Catalyst with Multiple Metal Oxide Interfaces Produced by Atomic Layer Deposition

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• 作者：Huibin Ge ; Dr. Bin Zhang ; Xiaomin Gu ; Haojie Liang ; Huimin Yang ; Dr. Zhe Gao ; Prof. Jianguo Wang and Prof. Yong Qin
• 刊名：Angewandte Chemie International Edition
• 出版年：2016
• 出版时间：June 13, 2016
• 年：2016
• 卷：55
• 期：25
• 页码：7081-7085
• 全文大小：2794K
• ISSN：1521-3773

文摘

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.