Electronic Oxide-Metal Strong Interaction (EOMSI)

Kun Qian; Huimei Duan; Yangyang Li; Weixin Huang

doi:10.1002/chem.202001003

Electronic Oxide-Metal Strong Interaction (EOMSI)

Chemistry. 2020 Oct 27;26(60):13538-13542. doi: 10.1002/chem.202001003. Epub 2020 Sep 17.

Authors

Kun Qian¹, Huimei Duan¹, Yangyang Li¹, Weixin Huang^{1

2}

Affiliations

¹ Hefei National Laboratory for Physical Sciences at the Microscale, Key Laboratory of Surface and Interface Chemistry and, Energy Catalysis of Anhui Higher Education Institutes, CAS Key Laboratory of Materials for Energy Conversion and, Department of Chemical Physics, University of Science and Technology of China Institution, Hefei, 230026, P. R. China.
² Dalian National Laboratory for Clean Energy, Dalian, 116023, P. R. China.

PMID: 32427388
DOI: 10.1002/chem.202001003

Abstract

Strong metal-support interaction of supported metal catalysts is an important concept to describe the effect of metal-support interactions on the structures and catalytic performances of supported metal particles. By using an example of CeO_x adlayers supported on Ag nanocrystals, herein a concept of electronic oxide-metal strong interaction (EOMSI) is put forward; this interaction significantly affects the electronic structures of oxide adlayers through metal-to-oxide charge transfer. The EOMSI can stabilize oxide adlayers in a low oxidation state under ambient conditions, which individually are not stable; moreover, the oxide adlayers experiencing the EOMSI are resistant to high-temperature oxidation in air to a certain extent. Such an EOMSI concept helps to generalize the strong influence of oxide-metal interactions on the structures and catalytic performance of oxide/metal inverse catalysts, which have been attracting increasing attention.

Keywords: cerium oxides; charge transfer; metal-support interactions; oxide-metal interactions; silver.

Abstract

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