Metal–Organic Framework-Derived Ceria-Supported Ni–Co Alloy Nanocatalysts for Hydrogenation of Nitroarenes

作者：Weizuo Li, Wei She, Jing Wang, Xuewei Li, Jingfang Li, Jing Shi, Guangming Li · 发表于：ACS Applied Nano Materials · 年份：2020 · DOI：10.1021/acsanm.0c02086 · 被引用次数：34 · 研究领域：Nanomaterials for catalytic reactions、Metal-Organic Frameworks: Synthesis and Applications、Catalytic Processes in Materials Science

Metal–organic framework (MOF)-templated strategy is an effective route to fabricate nanocatalysts for heterogeneous catalytic reactions. In this work, a coordination-evaporation-calcination (CEC) strategy was developed to synthesize a ceria (CeO 2 )-supported Ni–Co alloy catalyst (termed Ni–Co/CeO 2 -CEC) from a quaternary MOF (named as Ni–Co–Zn–Ce–H 2 salen) designed by metalloligand strategy. The Ni–Co–Zn–Ce–H 2 salen and its cross-bridging Zn 2+ ions simultaneously acted as self-sacrificing templates because of their thermal decomposition and evaporation at high-temperature (800 °C) pyrolysis process, which could facilitate the formation of bimetallic Ni–Co alloy with high dispersity and strengthen the Ni–Co–CeO 2 interaction, as well as the high concentration of oxygen vacancy defects. These unique advantages endow Ni–Co/CeO 2 -CEC with outstanding catalytic activity and yield for the hydrogenation process compared with Ni–Co/CeO 2 –CC (prepared by coordination-calcination method) and Ni–Co/CeO 2 -IWI (prepared by incipient wetness impregnation) catalysts, as well as good recyclability. We anticipate that this CEC strategy designed by Ce–H 2 salen metalloligand will provide a way for synthesizing other efficient and low-cost supported catalysts for catalytic reactions.