Adjacent single-atom irons boosting molecular oxygen activation on MnO2

Huayu Gu, Xiao Liu (), Xiufan Liu, Cancan Ling, Kai Wei, Guangming Zhan, Yanbing Guo and Lizhi Zhang ()
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Huayu Gu: Central China Normal University
Xiao Liu: Central China Normal University
Xiufan Liu: Central China Normal University
Cancan Ling: Central China Normal University
Kai Wei: Central China Normal University
Guangming Zhan: Central China Normal University
Yanbing Guo: Central China Normal University
Lizhi Zhang: Central China Normal University

Nature Communications, 2021, vol. 12, issue 1, 1-9

Abstract: Abstract Efficient molecular oxygen activation is crucial for catalytic oxidation reaction, but highly depends on the construction of active sites. In this study, we demonstrate that dual adjacent Fe atoms anchored on MnO2 can assemble into a diatomic site, also called as MnO2-hosted Fe dimer, which activates molecular oxygen to form an active intermediate species Fe(O = O)Fe for highly efficient CO oxidation. These adjacent single-atom Fe sites exhibit a stronger O2 activation performance than the conventional surface oxygen vacancy activation sites. This work sheds light on molecular oxygen activation mechanisms of transition metal oxides and provides an efficient pathway to activate molecular oxygen by constructing new active sites through single atom technology.

Date: 2021
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DOI: 10.1038/s41467-021-25726-w

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