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<p>Quasicrystals (QCs), being the latest class of materials, have many proven characteristics including catalytic degradation of organic pollutants, e.g. methylene blue (MB) dye. This study explores the potential of thermal spray-deposited Al–Cu–Fe, hot-pressed Al–Cu–Fe–B, and Al–Cu–Fe–Co QCs as heterogeneous catalysts for the degradation of MB dye. The surface of prepared QCs was activated through the selective dissolution of aluminum, resulting in the formation of Cu and Fe-rich active nano sites. This activation process contributed to the enhancement of catalytic properties. Aluminum leaching led to an increased surface roughness of QCs while keeping their unique icosahedral structure intact, rendering them intriguing candidates for exploration in catalytic applications. The results demonstrated that the leached QCs, Al–Cu–Fe and Al–Cu–Fe–B, with rate constants of 0.0262&#xa0;min<sup>−1</sup> and 0.0252&#xa0;min<sup>−1</sup>, respectively, exhibit superior catalytic degradation efficiency as compared to unleached quasicrystals and the model catalyst Cu/ZnO, having a rate constant value of 0.000154&#xa0;min<sup>−1</sup>. Hence, leached and doped QCs emerge as promising candidates for next generation catalysts, offering superior potential for sustainable environmental remediation from organic pollutants.</p> Graphical abstract <p></p>

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Study of catalytic degradation of methylene blue using activated aluminum-based quasicrystalline materials

  • 期刊论文

  • 发表日期：

    2026年4月22日

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  • Asifa Kusar,
  • Fareed Hussain,
  • Amena Mohsin,
  • Aqib Zahoor,
  • Khadim Hussain,
  • Taha Aziz,
  • Sajid Mushtaq,
  • Masroor Ahmad,
  • Rub Nawaz Shahid,
  • Naeem-ul-Haq Tariq,
  • Fahad Ali

摘要

Quasicrystals (QCs), being the latest class of materials, have many proven characteristics including catalytic degradation of organic pollutants, e.g. methylene blue (MB) dye. This study explores the potential of thermal spray-deposited Al–Cu–Fe, hot-pressed Al–Cu–Fe–B, and Al–Cu–Fe–Co QCs as heterogeneous catalysts for the degradation of MB dye. The surface of prepared QCs was activated through the selective dissolution of aluminum, resulting in the formation of Cu and Fe-rich active nano sites. This activation process contributed to the enhancement of catalytic properties. Aluminum leaching led to an increased surface roughness of QCs while keeping their unique icosahedral structure intact, rendering them intriguing candidates for exploration in catalytic applications. The results demonstrated that the leached QCs, Al–Cu–Fe and Al–Cu–Fe–B, with rate constants of 0.0262 min−1 and 0.0252 min−1, respectively, exhibit superior catalytic degradation efficiency as compared to unleached quasicrystals and the model catalyst Cu/ZnO, having a rate constant value of 0.000154 min−1. Hence, leached and doped QCs emerge as promising candidates for next generation catalysts, offering superior potential for sustainable environmental remediation from organic pollutants.

Graphical abstract