[3B01-11] Low-dimensional Material / Nanostructure / Nanomaterial (LD/NS/NM))

9:30 AM - 9:45 AM JST(12:30 AM - 12:45 AM UTC)

[3B03] Synthesis and characterization of heteroatom doped rhombohedral boron monosulfide

*Kanta Mori¹, Jinyu Li¹, Karin Oiwa¹, Osamu Oki^2,3, Masashi Miyakawa⁴, Takashi Taniguchi⁴, Takahiro Kondo^2,3,5,6,7 (1. Graduate School of Science and Technology, University of Tsukuba (Japan), 2. Institute of Pure and Applied Sciences, University of Tsukuba (Japan), 3. Hydrogen Boride Research Center, Tsukuba Institute of Advanced Research, University of Tsukuba (Japan), 4. Research Center for Materials Nanoarchitectonics, National Institute for Materials Science (Japan), 5. The Advanced Institute for Materials Research (WPI-AIMR), Tohoku University (Japan), 6. Tsukuba Research Center for Energy Materials Science, Institute of Pure and Applied Sciences, University of Tsukuba (Japan), 7. Research Center for Energy and Environmental Materials, National Institute for Materials Science (Japan))

Rhombohedral boron monosulfide (r-BS) is a layered material reported to exhibit high oxygen evolution reaction (OER) activity, and theoretical studies indicate that p-type doping may further enhance its catalytic performance by promoting hole-dominant semiconducting behavior. In this study, heteroatom incorporation was examined as a strategy to tune the electronic structure of r-BS and improve its OER activity. Phosphorus-incorporated r-BS samples were synthesized under high-pressure and high-temperature conditions while maintaining the B:(S+P)=1:1 composition. Powder X-ray diffraction and Raman spectroscopy suggested expanded interlayer spacing and changes in lattice distortion and bond strength, while UV-Vis spectroscopy showed enhanced absorbance in the visible region and a reduced band gap. These results indicate that phosphorus incorporation modifies the structural and electronic properties of r-BS, which may influence its electrocatalytic performance toward OER.

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