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<p>Chemical hydrogen storage technology is crucial for the widespread use of hydrogen, with significant research progress being made in hydrazine hydrate (N<sub>2</sub>H<sub>4</sub>·H<sub>2</sub>O). However, the efficient decomposition of N<sub>2</sub>H<sub>4</sub>·H<sub>2</sub>O remains a major challenge, hindered by dynamic constraints. To address this, we prepared NiPt nanoparticles deposited onto urchin-like TiO<sub>2</sub> (u-TiO<sub>2</sub>) using the impregnation-reduction method, resulting in the NiPt/u-TiO<sub>2</sub> catalyst. Remarkably, the Ni<sub>0.5</sub>Pt<sub>0.5</sub>/u-TiO<sub>2</sub> catalyst demonstrated 100% H<sub>2</sub> selectivity, ultrahigh catalytic activity and remarkable durability for N<sub>2</sub>H<sub>4</sub>·H<sub>2</sub>O dehydrogenation, with a turnover frequency (TOF) of 115.8&#xa0;min<sup>−1</sup>, surpassing that of the corresponding NiPt/commercial TiO<sub>2</sub> (c-TiO<sub>2</sub>). Characterization and experimental findings suggest that the remarkable activity may originate from the unique urchin-like structure of the catalyst, along with the synergistic interaction between NiPt metals and the support. This research opens new avenues for designing nanomaterials with morphology advantages for hydrogen evolution reaction.</p> Graphical abstract <p></p>

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Constructing urchin-like TiO2 integrated NiPt nanoparticles for boosting the decomposition of hydrazine hydrate

  • 期刊论文

  • 发表日期：

    2025年7月16日

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  • Shu-Yu Liu,
  • Wen-Ting Ren,
  • Lei-Yun Chen,
  • Jing Xie,
  • Chao Wan,
  • Li-Xin Xu,
  • Sheng-Lai Li,
  • Jia-Pei Wang,
  • Pavel S. Postnikov,
  • Dang-Guo Cheng

摘要

Chemical hydrogen storage technology is crucial for the widespread use of hydrogen, with significant research progress being made in hydrazine hydrate (N2H4·H2O). However, the efficient decomposition of N2H4·H2O remains a major challenge, hindered by dynamic constraints. To address this, we prepared NiPt nanoparticles deposited onto urchin-like TiO2 (u-TiO2) using the impregnation-reduction method, resulting in the NiPt/u-TiO2 catalyst. Remarkably, the Ni0.5Pt0.5/u-TiO2 catalyst demonstrated 100% H2 selectivity, ultrahigh catalytic activity and remarkable durability for N2H4·H2O dehydrogenation, with a turnover frequency (TOF) of 115.8 min−1, surpassing that of the corresponding NiPt/commercial TiO2 (c-TiO2). Characterization and experimental findings suggest that the remarkable activity may originate from the unique urchin-like structure of the catalyst, along with the synergistic interaction between NiPt metals and the support. This research opens new avenues for designing nanomaterials with morphology advantages for hydrogen evolution reaction.

Graphical abstract