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Oxygen intercalation under hexagonal boron nitride (h-BN) on Pt(111)
- Zhang, Yanhong, Wei, Mingming, Fu, Qiang, Bao, Xinhe
- Science bulletin 2015 v.60 pp. 1572-1579
- X-ray photoelectron spectroscopy, adsorption, boron nitride, carbon monoxide, desorption, electron microscopy, oxidation, oxygen
- The interface between a two-dimensional (2D) atomic crystal and a metal surface can be regarded as a nanoreactor, in which molecule adsorption and catalytic reactions may occur. In this work, we demonstrate that oxygen intercalation and desorption occur at the interface between hexagonal boron nitride (h-BN) overlayer and Pt(111) surface by using near-ambient pressure X-ray photoelectron spectroscopy (NAP-XPS), photoemission electron microscopy, and low-energy electron microscopy. Furthermore, CO oxidation under the h-BN cover was also observed by NAP-XPS. The present results indicate that the nanospace under the 2D cover can be used for surface reactions, in which novel surface chemistry may be induced by the nanoconfinement effect.