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<p>The quest for efficient hydrogen generation catalysts has led to the design of a novel LaOCl/SnO<sub>2</sub> nanocomposite, which demonstrates unique performance in sodium borohydride methanolysis. Through a controlled synthesis process, we achieved a tetragonally phased heterostructure with uniform spherical morphology, as confirmed by XRD, Raman spectroscopy, and SEM. XPS analysis revealed dynamic electronic redistribution at the LaOCl/SnO<sub>2</sub> interface, while BET measurements identified an optimal 50% SnO<sub>2</sub> composition (85 m<sup>2</sup>/g) that maximizes active site exposure. Remarkably, this catalyst delivers a record hydrogen generation rate of 17,405 mL/g·min. The derived lower activation energy (<i>E</i><sub><i>a</i></sub> = 10.17 kJ/mol) for the 50% SnO<sub>2</sub> composite implies efficient catalysis, contributing to sustained hydrogen production. The stability observed during the reaction underscores the promising potential of this nanocomposite in hydrogen storage applications, marking a significant step towards sustainable energy solutions.</p> Graphical abstract <p>The present study provided a comprehensive understanding of the structural, morphological, and chemical properties of the LaOCl/SnO<sub>2</sub> nanocomposite and their influence on catalytic performance in the methanolysis of NaBH<sub>4</sub>.</p> <p></p>

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Interface-engineered LaOCl/SnO2 nanocomposite for enhanced hydrogen generation from sodium borohydride

  • 期刊论文

  • 发表日期：

    2025年11月1日

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  • Maha Aiiad Alenizi,
  • A. S. Abouhaswa,
  • Taha Abdel Mohaymen Taha

摘要

The quest for efficient hydrogen generation catalysts has led to the design of a novel LaOCl/SnO2 nanocomposite, which demonstrates unique performance in sodium borohydride methanolysis. Through a controlled synthesis process, we achieved a tetragonally phased heterostructure with uniform spherical morphology, as confirmed by XRD, Raman spectroscopy, and SEM. XPS analysis revealed dynamic electronic redistribution at the LaOCl/SnO2 interface, while BET measurements identified an optimal 50% SnO2 composition (85 m2/g) that maximizes active site exposure. Remarkably, this catalyst delivers a record hydrogen generation rate of 17,405 mL/g·min. The derived lower activation energy (Ea = 10.17 kJ/mol) for the 50% SnO2 composite implies efficient catalysis, contributing to sustained hydrogen production. The stability observed during the reaction underscores the promising potential of this nanocomposite in hydrogen storage applications, marking a significant step towards sustainable energy solutions.

Graphical abstract

The present study provided a comprehensive understanding of the structural, morphological, and chemical properties of the LaOCl/SnO2 nanocomposite and their influence on catalytic performance in the methanolysis of NaBH4.