Yuki Nakahira

Precursor-dependent high-pressure phase transformation of Na2/3Mn2/3Ni1/3O2 to a cation-mixed rock-salt structure

Riki Kataoka, Reina Utsumi, Yuki Nakahira, Siree Burapornpong et autres

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Interlayer Hydrogen–Hydrogen Spacing Regulates the Formation of Molecular Hydrogen in Hydrogen Boride Nanosheets

Yukihiro Yasuda, Osamu Oki, Shohei SHIMOZATO, Kazuho Goto et autres

Hydrogen carriers that enable efficient transport and on-demand release of molecular hydrogen (H 2 ) are crucial for practical hydrogen-based energy systems. Hydrogen boride (HB) nanosheets, composed of boron and hydrogen in a 1:1 stoichiometric ratio, have promising potential as safe and …

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Interlayer hydrogen-hydrogen spacing regulates the formation of molecular hydrogen in hydrogen boride nanosheets

Yukihiro Yasuda, Osamu Oki, Shohei SHIMOZATO, Kazuho Goto et autres

Hydrogen carriers that enable efficient transport and on-demand release of molecular hydrogen (H2) are crucial for practical hydrogen-based energy systems. Hydrogen boride (HB) nanosheets, composed of boron and hydrogen in a 1:1 stoichiometric ratio, have promising potential as safe and lightweight hydrogen …

jp (code pays fourni par la source)

Interlayer hydrogen-hydrogen spacing regulates the formation of molecular hydrogen in hydrogen boride nanosheets

Yukihiro Yasuda, Osamu Oki, Shohei SHIMOZATO, Kazuho Goto et autres

Hydrogen carriers that enable efficient transport and on-demand release of molecular hydrogen (H2) are crucial for practical hydrogen-based energy systems. Hydrogen boride (HB) nanosheets, composed of boron and hydrogen in a 1:1 stoichiometric ratio, have promising potential as safe and lightweight hydrogen …

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Precious Metal Dioxide Nanosheets: Bridging the Gap between Solution Chemistry and Solid-State Two-Dimensional Materials

Satoshi Tominaka, Daisuke Takimoto, Akihiko Machida, Tomoya Eda et autres

2022年に発表した酸化ルテニウムナノシートの構造に続き、酸化イリジウムナノシートと酸化白金ナノシートの構造解析に成功し、これらすべてがTransition metal dichalcogenideと同じファミリーであることを解明した論文。これまではTMDレベルの電子状態の議論が不可能であったが、これで現代の材料科学のレベルで物性や機能が理解でき、構造の視点での様々なアナノロジーを含めた議論が可能になった。

Precious Metal Dioxide Nanosheets: Bridging the Gap between Solution Chemistry and Solid-State Two-Dimensional Materials

Satoshi Tominaka, Daisuke Takimoto, Akihiko Machida, Tomoya Eda et autres

High Resolution Image Download MS PowerPoint Slide Unraveling the atomic structures of chemically exfoliated precious metal dioxide (PMD) nanosheets is the key to understanding their diverse properties and realizing their potential in applications like catalysis. Using pair distribution function (PDF) analysis, we …

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Precious Metal Dioxide Nanosheets: Bridging the Gap between Solution Chemistry and Solid-State Two-Dimensional Materials

Satoshi Tominaka, Daisuke Takimoto, 町田 晃彦, Tomoya Eda et autres

Pressure–temperature driven phase transition and optoelectronic improvement in lead-free hybrid perovskite MASnI 3

Yongpeng Tang, Kenta Nakahara, Qing Wang, Sota Inoue et autres

Pressure- and temperature-driven phase transitions in MASnI₃ were revealed by in situ synchrotron XRD analysis, showing a tetragonal-to-orthorhombic II transformation accompanied by local structural distortion and short-range order evolution.

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Crystal Structure Investigations of LaNi 2 H x ( x = 0 and 3.08 with Metal Atoms in AlB 2 Units) and LaNiH 1.01

Toyoto Sato, Reina Utsumi, Yuki Nakahira, Hiroyuki Saitoh et autres

High Resolution Image Download MS PowerPoint Slide Metal hydrides have typically been investigated as hydrogen storage materials with a focus on hydrogen absorption and desorption reactions at hydrogen pressures below 10–20 MPa. However, hydrogen absorption (hydrogenation) reactions above 1 GPa have attracted …

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Surface-Engineered Asymmetric Covalent Organic Framework Membranes with Polymers for Improved Ion Transport

Ye Ji Shin, Minwoo Kim, Hyunjeong Kim, Young Yong Kim et autres

Highly oriented two-dimensional (2D) covalent organic frameworks (COFs) possess aligned channels that facilitate efficient ion transport. This structural advantage makes COFs promising membrane materials for reverse electrodialysis (RED) systems. However, to develop ion-exchange membranes suitable for commercialization, it is essential to devise …

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Sub-Toxic Exposure to DEPs and PM2.5 Impairs Dendritic Cell Function Through Intracellular Particle Accumulation

Yuki Nakahira, Daisuke Otomo, Tomoaki Okuda, Akira Onodera

Air pollution, particularly exposure to fine particulate matter (PM2.5), poses a substantial risk to human health. Diesel exhaust particles (DEPs), a major constituent of PM2.5, contain chemically reactive components that promote inflammation, oxidative stress, and immune dysfunction. Although the acute toxicity of …

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Synthesis, Crystal Structure, and Hydrogen Storage Properties of an AB3-Based Alloy Synthesized by Disproportionation Reactions of AB2-Based Alloys

Toyoto Sato, Hiroyuki Saitoh, Reina Utsumi, Kazuki Obana et autres

High Resolution Image Download MS PowerPoint Slide Hydrogen storage materials store hydrogen in their atomic states, enabling more compact and safer storage methods compared to those for gaseous and liquid hydrogen. Although various types of hydrogen storage materials have been reported, new …

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