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<p>Efficient removal of radioactive Co<sup>2+</sup> from wastewater is essential due to its long-term radiological hazards to ecosystems and human health. This review systematically summarizes recent advances in metal-based adsorbents, including metal oxide, metal hydroxides and layered double hydroxides, metal inorganic salt-based materials, and metal–organic frameworks (MOFs), by comparing their adsorption mechanisms, performance, and selectivity. It further highlights the promise of tailored and composite materials for effective cobalt remediation, offering valuable guidance for designing high-performance adsorbents for radioactive wastewater treatment.</p> Graphical abstract <p></p>

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Research advances in metal-based compounds for the adsorption of radioactive Co2+ from aqueous solutions

  • 期刊论文

  • 发表日期：

    2026年3月5日

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  • Zeyu Guo,
  • Xiaowei Wang,
  • Jinfeng Men,
  • Chengqiang Liang,
  • Ping Bao,
  • Yudong Xie,
  • Biao Wang

摘要

Efficient removal of radioactive Co2+ from wastewater is essential due to its long-term radiological hazards to ecosystems and human health. This review systematically summarizes recent advances in metal-based adsorbents, including metal oxide, metal hydroxides and layered double hydroxides, metal inorganic salt-based materials, and metal–organic frameworks (MOFs), by comparing their adsorption mechanisms, performance, and selectivity. It further highlights the promise of tailored and composite materials for effective cobalt remediation, offering valuable guidance for designing high-performance adsorbents for radioactive wastewater treatment.

Graphical abstract