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<p>Removing organic pollutants from water is essential for preserving global ecosystems. However, challenges related to recyclability and material stability hinder effective treatment. Inspired by the mortise-and-tenon structure, a series of Ca<sup>2+</sup>-enhanced amino acid-intercalated layered double hydroxide aerogels featuring an interlocked framework was developed via the structural memory effect and supercritical drying. The aerogels achieve a balance of compressive strength (40.1 − 45.5 MPa) and toughness, overcoming the brittleness of conventional inorganic aerogels. They can remove a broad range of water pollutants, including tetracycline, doxycycline hydrochloride, methyl orange, Congo red and malachite green, with efficiencies of 95.4 − 99.9%, while retaining 87% of their initial efficiency after five regeneration cycles and enabling pollutant detection with a detection limit of 710 nM. The aerogels also exhibit robust stability under liquid nitrogen and butane flame exposure, along with flame resistance (limiting oxygen index ≈ 100%). These findings highlight their potential for water purification under harsh environmental conditions.</p>

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Stiff interlocked nanoclay aerogels for synergistic detection and removal of organic contaminants in water

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月27日

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  • Shanying Sui,
  • Jingxing Wang,
  • Yufang Lu,
  • Yufan Yang,
  • Zhenhua Song,
  • Chao Yin,
  • Yixian Zhang,
  • Yi Zhang,
  • Huafeng Quan,
  • Shaoqiang Guo,
  • Zhifang Sun

摘要

Removing organic pollutants from water is essential for preserving global ecosystems. However, challenges related to recyclability and material stability hinder effective treatment. Inspired by the mortise-and-tenon structure, a series of Ca2+-enhanced amino acid-intercalated layered double hydroxide aerogels featuring an interlocked framework was developed via the structural memory effect and supercritical drying. The aerogels achieve a balance of compressive strength (40.1 − 45.5 MPa) and toughness, overcoming the brittleness of conventional inorganic aerogels. They can remove a broad range of water pollutants, including tetracycline, doxycycline hydrochloride, methyl orange, Congo red and malachite green, with efficiencies of 95.4 − 99.9%, while retaining 87% of their initial efficiency after five regeneration cycles and enabling pollutant detection with a detection limit of 710 nM. The aerogels also exhibit robust stability under liquid nitrogen and butane flame exposure, along with flame resistance (limiting oxygen index ≈ 100%). These findings highlight their potential for water purification under harsh environmental conditions.