[2C09-15] Synchrotron Radiation Surface Science 

4:35 PM - 4:50 PM JST(7:35 AM - 7:50 AM UTC)

[2C14] Near-Ambient Pressure X-ray Photoelectron Spectroscopic Evidence for CO₂ Dissociation on Hydrogen Boride Sheets

*Yifu Liu¹, Yu Murano¹, Masafumi Horio¹, Junyan Han², Kazuki Yamaguchi¹, Takahiro Kondo², Iwao Matsuda¹ (1. The Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba, 277-8581 (Japan), 2. Department of Materials Science and Tsukuba Research Center for Energy Materials Science, Institute of Pure and Applied Science, University of Tsukuba, Tsukuba 305-8573 (Japan))

Carbon dioxide activation and dissociation are key processes for catalytic CO₂ conversion, but direct surface-sensitive evidence under reaction gas conditions remains limited for hydrogen boride sheets. In this study, we applied near-ambient pressure X-ray photoelectron spectroscopy to investigate CO₂ dissociation on HB sheets. This method enables direct observation of surface chemical states during CO₂ exposure, allowing the evolution of boron, oxygen, and carbon species to be monitored under near-realistic reaction environments. The NAP-XPS results indicate that CO₂ interacts with HB surfaces and forms oxygen-containing and weak carbon-containing surface species during exposure. Combined with gas-phase analysis, these observations suggest that HB sheets promote CO₂ dissociation under near-ambient pressure conditions. This work highlights the potential of hydrogen boride sheets as a functional platform for CO₂ activation and provides insights for the future design of boron-based materials for CO₂ conversion.

Password required to view