Rhombohedral boron monosulfide as a metal-free photocatalyst

Keisuke Miyazaki; Akira Yamaguchi; Haruki Kusaka; Norinobu Watanabe; Aufandra Cakra Wardhana; Satoshi Ishii; Akiyasu Yamamoto; Masashi Miyakawa; Takashi Taniguchi; Takahiro Kondo; Masahiro Miyauchi

doi:10.1038/s41598-023-46769-7

Article Rhombohedral boron monosulfide as a metal-free photocatalyst

Keisuke Miyazaki ; Akira Yamaguchi ; Haruki Kusaka ; Norinobu Watanabe ; Aufandra Cakra Wardhana ; Satoshi Ishii (National Institute for Materials Science) ; Akiyasu Yamamoto ; Masashi Miyakawa (National Institute for Materials Science) ; Takashi Taniguchi (National Institute for Materials Science) ; Takahiro Kondo ; Masahiro Miyauchi

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Keisuke Miyazaki, Akira Yamaguchi, Haruki Kusaka, Norinobu Watanabe, Aufandra Cakra Wardhana, Satoshi Ishii, Akiyasu Yamamoto, Masashi Miyakawa, Takashi Taniguchi, Takahiro Kondo, Masahiro Miyauchi. Rhombohedral boron monosulfide as a metal-free photocatalyst. Scientific Reports. 2023, 13 (1), 19540-19540. https://doi.org/10.1038/s41598-023-46769-7

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In this study, rhombohedral boron monosulfide (r-BS) was synthesized by a high-pressure solid-state reaction, and its photocatalytic properties were investigated. The r-BS evolved hydrogen (H2) from water under ultraviolet (UV) as well as under visible light irradiation, and its internal quantum efficiency reached 1.8% under UV light irradiation. In addition to the H2 evolution reaction, the r-BS photocatalyst drove carbon dioxide (CO2) reduction and dye oxidation reactions under UV irradiation. Although bare r-BS was not so stable under strong light irradiation in water, cocatalyst modification improved its stability. These results indicate that r-BS is a new class of non-metal photocatalyst applicable for H2 production, CO2 reduction, and environmental purification reactions.

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