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 Materials Science, Institute of Pure and Applied Sciences, University of Tsukuba, Tsukuba, 305-8573, Japan.
Small. 2024 Dec;20(49):e2404986. doi: 10.1002/smll.202404986. Epub 2024 Sep 23.
Hydrogen boride (HB) sheet is a new class of 2D materials comprising hydrogen and boron, synthesized through ion-exchange and exfoliation techniques. HB sheets can release hydrogen (H) under light irradiation and is predicted to be a promising H storage material. However, its application is limited to the UV region. One approach to enable a visible-light-driven system is the utilization of plasmonic metallic nanoparticles. The present study reports H release from copper (Cu) nanoparticle-modified HB sheet (HB/Cu) under visible-light irradiation. Copper nanoparticles possess unique and strong plasmonic responses in the visible-light range, making them ideal light absorbers in this system. HB/Cu nanocomposites are synthesized using a simple mixture of copper acetate and HB sheets in acetonitrile, where HB sheets reduced copper ions to metal copper nanoparticles. The photoirradiation results shows that HB/Cu nanocomposites released more H than the bare HB sheets under visible-light irradiation. This is probably due to the plasmonic photothermal effect of copper metal, which enhances H generation from the HB sheets. This material offers a viable and cost-effective approach for developing visible-light-sensitive systems.
硼氢化氢（HB）片是一类由氢和硼组成的新型二维材料，通过离子交换和剥离技术合成。HB片在光照下可释放氢气（H），预计是一种很有前景的储氢材料。然而，其应用仅限于紫外区域。实现可见光驱动系统的一种方法是利用等离子体金属纳米颗粒。本研究报道了在可见光照射下，铜（Cu）纳米颗粒修饰的HB片（HB/Cu）释放氢气的情况。铜纳米颗粒在可见光范围内具有独特而强烈的等离子体响应，使其成为该系统中理想的光吸收剂。HB/Cu纳米复合材料是通过将醋酸铜和HB片在乙腈中简单混合合成的，其中HB片将铜离子还原为金属铜纳米颗粒。光辐照结果表明，在可见光照射下，HB/Cu纳米复合材料比裸露的HB片释放出更多的氢气。这可能是由于铜金属的等离子体光热效应，增强了HB片产生氢气的能力。这种材料为开发可见光敏感系统提供了一种可行且经济高效的方法。
