Presentation Information
[2P01]Controlling UV induced hydrogen release from HB nanosheets by ion exchange mediated BHB/BH ratio modulation
*Miwa Hikichi1, Jumpei Takeshita2, Natsumi Noguchi1, Shin-ichi Ito1, Yukihiro Yasuda1, Luong Thi Ta3,4, Kurt Irvin M Rojas3, Iwao Matsuda5, Satoshi Tominaka6, Yoshitada Morikawa3, Osamu Oki1, Ikutaro Hamada3, Masahiro Miyauchi2, Takahiro Kondo1 (1. University of Tsukuba, 2. Institute of Science Tokyo, 3. The University of Osaka, 4. Vietnam Maritime University, 5. The University of Tokyo, 6. National Institute for Materials Science)
Hydrogenated borophene (HB) nanosheets are two-dimensional hydrogen-containing materials composed of boron and hydrogen. Hydrogen release from HB nanosheets can be triggered by thermal stimuli, UV irradiation, visible light under specific chemical modifications, and low electrochemical bias, making them promising functional materials. Under a B/H atomic ratio of 1.0, HB nanosheets exhibit a unique structure composed of three-center two-electron B–H–B bonds (BHB units) and two-center two-electron terminal B–H bonds (BH units). However, the relationship between the structure and hydrogen release behavior remains largely unexplored, and precise structural control and stability improvement are key challenges.In this study, we developed a method to tune the ratio of BHB to BH units, the primary structural components of HB. We further demonstrated that the ratio of BHB/BH correlates with the photoinduced hydrogen release behavior under UV irradiation. These findings offer new insights into the design of HB-based materials for optoelectronics and next-generation energy conversion systems.