Takeshita Jumpei, Tsurugi Hayato, Mauliana Andi, Yamaguchi Akira, Kondo Takahiro, Miyauchi Masahiro
Department of Materials Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152-8552, Japan.
Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka, 565-0871, Japan.
Adv Sci (Weinh). 2024 Nov;11(42):e2405981. doi: 10.1002/advs.202405981. Epub 2024 Sep 13.
Hydrogen boride (HB) nanosheets are recognized as a safe and lightweight hydrogen carrier, yet their hydrogen (H) generation technique has been limited. In the present study, nitrogen-containing organic heterocycles are mixed with HB nanosheets in acetonitrile solution for visible-light-driven H generation. After exploring various nitrogen-containing heterocycles, the mixture of 1,10-phenanthroline molecules (Phens) and HB nanosheets exhibited significant H generation even under visible light irradiation. The quantum efficiency for H generation of the mixture of HB nanosheets and Phens is 0.6%. Based on spectroscopic and electrochemical analyses and density functional theory (DFT) calculations, it is determined that radical species generated from Phens with electrons and protons donated by HB nanosheets are responsive to visible light for H generation. The HB nanosheets/Phens mixture presented in this study can generate H using renewable energy sources such as sunlight without the need for complex electrochemical systems or heating mechanisms and is expected to serve as a lightweight hydrogen storage/release system.
硼氢化氢（HB）纳米片被认为是一种安全且轻质的氢载体，但其制氢技术一直受到限制。在本研究中，将含氮有机杂环化合物与HB纳米片在乙腈溶液中混合，用于可见光驱动的制氢。在探索了各种含氮杂环化合物后，1,10 - 菲咯啉分子（Phens）与HB纳米片的混合物即使在可见光照射下也表现出显著的制氢效果。HB纳米片与Phens混合物的制氢量子效率为0.6%。基于光谱和电化学分析以及密度泛函理论（DFT）计算，确定由Phens产生的自由基物种与HB纳米片提供的电子和质子发生反应，从而对可见光产生制氢响应。本研究中展示的HB纳米片/Phens混合物可以利用太阳能等可再生能源制氢，无需复杂的电化学系统或加热机制，有望成为一种轻质的储氢/释氢系统。
