Adjacent single-atom irons boosting molecular oxygen activation on MnO(2).
Adjacent single-atom irons boosting molecular oxygen activation on MnO(2).
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DOI:
10.1038/s41467-021-25726-w
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发表时间:
2021-09-14
影响因子:
16.6
通讯作者:
Zhang L
中科院分区:
文献类型:
--
作者:
Gu H;Liu X;Liu X;Ling C;Wei K;Zhan G;Guo Y;Zhang L
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. Efficient oxygen activation is crucial for catalytic oxidation reaction, but highly depends on the construction of active sites. Here, dual adjacent Fe atoms anchored on MnO2 can assemble into a diatomic site, which activates molecular oxygen to form an active intermediate species Fe(O = O)Fe for CO oxidation.
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