Journal article
In situ manipulation of the active Au-TiO2 interface with atomic precision during CO oxidation
Zhejiang University1
Chinese Academy of Sciences2
University of Chinese Academy of Sciences3
National Centre for Nano Fabrication and Characterization, Technical University of Denmark4
Nanocharacterization, National Centre for Nano Fabrication and Characterization, Technical University of Denmark5
Center for Nanostructured Graphene, Centers, Technical University of Denmark6
CAS - Shanghai Advanced Research Institute7
The interface between metal catalyst and support plays a critical role in heterogeneous catalysis. An epitaxial interface is generally considered to be rigid, and tuning its intrinsic microstructure with atomic precision during catalytic reactions is challenging. Using aberration-corrected environmental transmission electron microscopy, we studied the interface between gold (Au) and a titanium dioxide (TiO2) support.
Direct atomic-scale observations showed an unexpected dependence of the atomic structure of the Au-TiO2 interface with the epitaxial rotation of gold nanoparticles on a TiO2surface during carbon monoxide (CO) oxidation. Taking advantage of the reversible and controllable rotation, we achieved in situ manipulation of the active Au-TiO2 interface by changing gas and temperature.
This result suggests that real-time design of the catalytic interface in operating conditions may be possible.
Language: | English |
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Publisher: | American Association for the Advancement of Science |
Year: | 2021 |
Pages: | 517-521 |
ISSN: | 10959203 and 00368075 |
Types: | Journal article |
DOI: | 10.1126/science.abe3558 |
ORCIDs: | 0000-0001-7450-789X , 0000-0002-0126-0854 , 0000-0003-3051-3061 , Hansen, Thomas W. , 0000-0002-7879-6817 , 0000-0002-5968-9223 , Wagner, Jakob B. , 0000-0001-6015-5694 , 0000-0002-9893-8296 and 0000-0002-1739-9033 |