[2A06-13] Surface Science / Chemical Property (SS2)

2:30 PM - 3:00 PM JST(5:30 AM - 6:00 AM UTC)

[2A06【招待講演】] Updating Xray Photoelectron Spectroscopy to Face Realities at Surfaces

*Iwao Matsuda¹ (1. the Institute for Solid State Physics, the University of Tokyo (Japan))

We have developed operando XPS systems and investigated various interfaces of functional materials. In this talk, I will describe our instrumentations at synchrotron radiation facilities, especially ambient pressure XPS at NanoTerasu. I will also present our recent works on carrier and molecular dynamics in atomic-layer materials, such as graphene (C) and borophane (HB). Epitaxial graphene layers on the SiC substrates show distinctive carrier dynamics, depending on the time-domains. The graphene/SiC system can dynamically realize carrier accumulations in the overlayer in the gas atmosphere. On the free-standing borophane layers, we have identified reaction intermediates during the CO₂ methanation and C-C coupling reactions. Seeing is believing. These experimental facts, acquired by surface science approach, provide the chemical perspectives and the physical parameters toward the real-world applications of these materials.

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