[3B01-11] Low-dimensional Material / Nanostructure / Nanomaterial (LD/NS/NM))

9:45 AM - 10:00 AM JST(12:45 AM - 1:00 AM UTC)

[3B04] Formation and dispersion control of Cu and Ni nanoparticles on hydrogen boride nanosheets

*Myu Kawase¹, Natsumi Noguchi¹, Shin-ichi Ito², Miwa Hikichi², Ryuki Tsuji², Osamu Oki^2,3, Takeshi Fujita⁴, Ken Sakaushi^2,5, Takahiro Kondo^2,3,5,6,7 (1. Graduate School of Science and Technology, University of Tsukuba (Japan), 2. Institute of Pure and Applied Sciences, University of Tsukuba (Japan), 3. Hydrogen Boride Research Center, Tsukuba Institute for Advanced Research, University of Tsukuba (Japan), 4. School of Environmental Science and Engineering, Kochi University of Technology (Japan), 5. Research Center for Energy and Environmental Materials, National Institute for Materials Science (Japan), 6. The Advanced Institute for Materials Research, Tohoku University (Japan), 7. Tsukuba Research Center for Energy Materials Science, Institute of Pure and Applied Sciences, University of Tsukuba (Japan))

Hydrogen boride (HB) nanosheets are two-dimensional materials consisting of a hexagonal boron network with bridging hydrogen atoms. HB nanosheets can reduce specific metal ions without using other reducing agents and support them in a highly dispersed state, making them promising candidates for multi-metallic catalytic applications. In this study, Cu and Ni were introduced onto HB nanosheets at different molar ratios (x:y:z), yielding Cu_x–Ni_y/HB_z. The effects of metal loading on nanoparticle formation and dispersion were investigated by transmission electron microscopy and energy-dispersive X-ray spectroscopy measurements. In Cu₅–Ni₅/HB₁₀₀, Ni was finely dispersed, whereas Cu partially agglomerated into larger particles. In Cu_0.1–Ni_0.1/HB₁₀₀, both Cu and Ni were highly dispersed without forming detectable nanoparticles. These results provide insight into the formation of Cu and Ni dual-metal nanoparticle systems on HB nanosheets.

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