What is the Interaction between Atomically Dispersed Ni and Oxide Surfaces?

Yuichiro Koike; Wang-Jae Chun; Kaoru Ijima; Shushi Suzuki; Kiyotaka Asakura

doi:10.2320/matertrans.MBW200830

This article has now been updated. Please use the final version.

What is the Interaction between Atomically Dispersed Ni and Oxide Surfaces?

Yuichiro Koike, Wang-Jae Chun, Kaoru Ijima, Shushi Suzuki, Kiyotaka Asakura

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Keywords: (polarization-dependent total-reflection fluorescence extended X-ray absorption fine structure) PTRF-XAFS, metal oxide surface, nickel cluster, metal–oxide interaction, TiO₂ (110), Al₂O₃ (0001)

JOURNAL RESTRICTED ACCESS Advance online publication

Article ID: MBW200830

DOI https://doi.org/10.2320/matertrans.MBW200830

The final version of this article is now available: Vol. 50 (2009) , No. 3 p.509

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Abstract

Metal–oxide surface interaction is important in catalysis. We have studied Ni on TiO₂ (110) and Al₂O₃ (0001) by means of polarization-dependent total-reflection fluorescence extended X-ray absorption fine structure (PTRF-EXAFS) observations to elucidate the origin of metal–oxide interactions. Ni atoms interact with the dangling bond of the oxygen atoms. The Ni atoms are positively charged and bonded with more than two oxygen atoms.

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