Creating new materials for realization of carbon neutrality: hydrogen boride and boron monosulfide sheets

Creating new materials for realization of carbon neutrality: hydrogen boride and boron monosulfide sheets

As new 2D metal-free materials, we have experimentally synthesized hydrogen boride (HB) sheets [1] and boron monosulfide (BS) sheets [2]. The BS sheets are crystalline semiconductor and its bandgap was found to be tuned to a desired value by controlling the number of stacked 2D BS nanosheet [2]. Moreover, the stacked BS sheets, rhombohedral BS (r-BS), is found to be as a p-type semiconductor [3] and have a great electrocatalytic property for oxygen evolution reaction in alkaline solution [4]. HB sheets are composed of boron and hydrogen at a 1:1 stoichiometric ratio, which can be formed by an ion-exchange reaction between protons and magnesium cations in magnesium diboride with exfoliation [2]. In the HB sheets, boron atoms form a hexagonal 2D network, in which hydrogen atoms are bound to boron by three-center-two-electron bonds (B–H–B) and two-center-two-electron bonds (B–H) [5]. Experimental studies have clarified that HB sheets exhibit solid acid catalytic activity [6], metal ion reducibility [7, 8], semimetal electronic properties [9], gas-sensor applicability [5], stability against water [10], CO2 adsorption/conversion property including C-C coupling [11], and a light-responsive hydrogen release function [12,13]. In the presentation, recent progress of BS and HB sheets will be introduced.

Acknowledgements These works were done with Mr. H. Nishino, Prof. T. Fujita, Dr. N. T. Cuong, Dr. S. Tominaka, Prof. M. Miyauchi, Prof. M. Otani, Dr. S. Hagiwara, Ms. L. Li, Mr. C. Jiang, Dr. F. Kuroda, Mr. N. Watanabe, Dr. S. Iimura, Dr. A. Hirata, Dr. N. Umezawa, Prof. S. Okada, Prof. E. Nishibori, Mr. A. Fujino, Mr. R. Ishibiki, Mr. T. Goto, Mr. H. Kusaka, Dr. M. Toyoda, Prof. T. Tokunaga, Prof. A. Yamamoto, Dr. M. Miyakawa, Dr. K. Horiba, Prof. S. Saito, Dr. T. Taniguchi, Dr. K. Watanabe, Dr. S. Shinde, Prof. T. Sakurai, Ms. M. Lima, Mr. K. Miyazaki, Mr. K. Matsushita, Dr. M. Masuda, Prof. I. Hamada, Prof. Y. Morikawa, Dr. A. Yamaguchi, Mr. R. Kawamura, Dr. J. M Oliva-Enrich, Dr. S. Ito, Dr. Tateishi, Prof. Niibe, Prof. J. N. Kondo, Dr. T. Fujitani, Prof. I. Matsuda, Prof. J. Nakamura, Prof. H. Hosono and other co-workers. References [1] H. Nishino, T. Fujita, N. T. Cuong, S. Tominaka, et al., J. Am. Chem. Soc. 139, 13761 (2017). [2] H. Kusaka, R. Ishibiki, M. Toyoda, et al., J. Mater. Chem. A 9, 24631 (2021). [3] N. Watanabe, et al., Molecules 28, 1896 (2023); K. Sugawara, et al., Nano Lett. 23, 1673 (2023). [4] L. Li, S. Hagiwara, C. Jiang, H. Kusaka, et al., Chem. Eng. J. 471, 144489 (2023). [5] S. Tominaka, R. Ishibiki, A. Fujino, K. Kawakami, et al., Chem 6, 406 (2020). [6] A. Fujino, et al., ACS Omega, 4, 14100 (2019); A. Fujino, et al., PCCP 23, 7724 (2021). [7] S. I. Ito, T. Hirabayashi, R. Ishibiki, R. Kawamura, et al., Chem. Lett. 49, 789 (2020). [8] S. Gao, Y. Zhang, J. Bi, B. Wang, C. Li, J. Liu, et al., J. Mater. Chem. A 8, 18856 (2020). [9] I. Tateishi, N. T. Cuong, C. A. S. Moura, et al. Phys. Rev. Mate. 3, 024004 (2019). [10] K. I. Rojas, N. T. Cuong, H. Nishino, Commun. Mate. 2, 81 (2021). [11] T. Goto, S. Ito, S. L. Shindem et al., Commun. Chem. 5, 118 (2022). [12] R. Kawamura, N. Cuong, T. Fujita, R. Ishibiki, et al., Nat. Commun. 10, 4880 (2019). [13] M. Hikichi, J. Takeshita, N. Noguchi, S. Ito, et al., Adv. Mater. Int. 10, 2300414 (2023).


Ponente del seminario: Profesor Takahiro Kondo
Fecha del seminario: 07/11/2023 12:00
Lugar del seminario: Sala 215 Instituto de Química-Física "Blas Cabrera" (CSIC)