催化作用
金属
材料科学
可扩展性
Atom(片上系统)
同种类的
纳米技术
化学
化学工程
合理设计
碳纤维
极化(电化学)
组合化学
蓝图
氮气
还原(数学)
电负性
氨生产
多相催化
联轴节(管道)
过渡金属
科技与社会
氮原子
二苯并噻吩
原子单位
燃料电池
均相催化
作者
Kyung-Min Kim,Jinhong Mun,Gwang‐Nam Yun,Young-Woo You,Ji Hoon Park,Jin Hee Lee,Jungseob So,HyeonOh Shin,Junhyeok Kwon,Sung‐Tae Kim,Sohyun Kang,Yoon Ku Kwon,Tae‐Hyuk Kwon,Youn‐Sang Bae,Geunsik Lee,Sang‐Joon Kim,Young Jin Kim,Hyun‐Tak Kim
标识
DOI:10.1038/s41467-025-66608-9
摘要
Dual-atom catalysts offer high atom utilization and synergistic inter-atom interactions, yet their use in high-temperature thermocatalysis remains largely unexplored due to challenges in achieving structurally homogeneous and robust active sites. Herein, we report a scalable coordinated bottom-up strategy for the synthesis of a Cu-Ni dual-atom catalyst supported on nitrogen-doped carbon (CuNi-DAC), featuring a well-defined N2Cu-N2-NiN2 configuration in which each metal atom is coordinated to four nitrogen atoms and bridged by two nitrogen atoms. Under reverse water-gas shift reaction conditions, CuNi-DAC achieves CO2 conversion approaching thermodynamic equilibrium with nearly 100% CO selectivity. Critically, CuNi-DAC maintains its atomic structure and catalytic performance up to 600 °C over repeated cycles, while reference catalysts including Cu-SAC and Ni-SAC experience severe deactivation along with metal sintering. Comprehensive ex-situ and in-situ characterizations, integrated with theoretical calculations, reveal that d-d orbital coupling and electronic polarization between adjacent Cu and Ni centers enhance selective CO2 reduction to CO product, while reinforcing metal-support interactions to mitigate sintering. The in-depth mechanistic insights and the scalable synthesis provide a blueprint for the rationally designing next-generation dual-atom catalysts with enhanced efficiency, stability, and tailored activity for target chemical transformations.
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