The Institute for Molecular Science, National Institutes of Natural Sciences
The Graduate University for Advanced Studies, SOKENDAI
High Energy Accelerator Research Organization, KEK
We have developed a method for making simultaneous soft X-ray absorption spectroscopy (XAS) measurements of solid-liquid interfaces and bulk liquids. By controlling the thickness of the liquid layer, we obtained the O K-edge XAS spectrum of bulk H2O from a liquid H2O layer on a thin Au film using the transmission method, and we used the electron-yield method to obtain the XAS spectrum of the H2O/Au interface by measuring the drain currents from the Au surface following soft X-ray absorption. This method for obtaining simultaneous XAS measurements of solid-liquid interfaces and bulk liquids can be utilized to investigate the mechanisms of a variety of catalytic, electrochemical, and biological reactions involving solid-liquid interfaces.
The experiments in this study were performed under the approval of the Photon Factory Program Advisory Committee (Proposal No. 2025S2-003).
Please refer to the website of the Institute for Molecular Science, National Institutes of Natural Sciences for details.
Contact
High Energy Accelerator Research Organization (KEK)
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