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Updated: Jun 2, 2026

Rapid Mix Preparation of Bioinspired Nanoscale Hydroxyapatite for Biomedical Applications
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Surface modification of hydroxyapatite for hydrogen generation.

Justyn Wayne Jaworski1, Daehyun Kim, Kyeongmun Jung

  • 1Department of Chemistry and RINS, Gyeongsang National University, Jinju, 660-701, South Korea.

Journal of Colloid and Interface Science
|April 13, 2011
PubMed
Summary

Hydroxyapatite (HAP) surface modification with ruthenium (Ru) creates a durable, inexpensive catalytic support for hydrogen generation. This novel Ru-HAP material demonstrates high activity and a long lifetime for sodium borohydride hydrolysis.

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Area of Science:

  • Materials Science
  • Catalysis
  • Renewable Energy

Background:

  • Hydrogen is a clean fuel alternative to carbon-based fuels.
  • Efficient catalytic supports are crucial for hydrogen production technologies.
  • Hydroxyapatite (HAP) is an inexpensive and durable material with potential for catalytic applications.

Purpose of the Study:

  • To investigate surface-modified hydroxyapatite as a novel catalytic support for hydrogen generation.
  • To evaluate the performance of ruthenium-ion-exchanged HAP (RuHAP) for sodium borohydride hydrolysis.
  • To explore the effect of surface morphology on catalytic activity.

Main Methods:

  • Surface modification of hydroxyapatite via ruthenium ion exchange.
  • Testing RuHAP as a catalyst support for sodium borohydride (NaBH(4)) hydrolysis.

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  • Characterization of catalytic activity, turnover number, and operational lifetime.
  • Comparison of polycrystalline and single-crystal RuHAP morphologies.

    • Main Results:

    • Ru-ion-exchanged HAP (RuHAP) demonstrated high activity for sodium borohydride hydrolysis.
    • Achieved a high total turnover number of approximately 24,000 mol H(2)/mol Ru.
    • Exhibited a long catalytic lifetime of approximately one month with repeated use.
    • Polycrystalline RuHAP showed shorter induction times and improved reaction rates compared to single-crystal supports.

    Conclusions:

    • Surface-modified HAP with ruthenium is a promising, cost-effective catalytic support for hydrogen generation.
    • The complex morphology of polycrystalline RuHAP enhances catalytic performance, reducing induction times and increasing reaction rates.
    • RuHAP is a viable candidate for developing practical hydrogen generation systems.