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<p>With the escalating severity of oily wastewater discharge, the development of novel and efficient adsorption materials is an urgent necessity. Bio-based aerogels, due to their distinctive attributes, including low density, high porosity, sustainability, and safety, have emerged as ideal absorbents for oil spill remediation. In this study, aerogels with ultra-low density were prepared from the renewable biomass material, pectin, through an innovative ice/bubble dual-template method. In this process, with the help of sodium dodecyl sulfate, microbubbles were introduced by high-speed stirring to decrease the density of aerogels. At the same time, phytic acid also played a role in promoting pectin crosslinking and enhancing the flame-retardant properties of aerogels, significantly improving the safety of their transportation and application. After silane modification, the aerogel exhibited ultra-low density (10.91&#xa0;mg/cm<sup>3</sup>), exceptional superhydrophobicity (152°), outstanding oil absorption capacity (110&#xa0;g/g), and flame retardancy. This work underscored the significant and promising prospects of bio-based aerogels in addressing oil pollution challenges, highlighting their potential as optimal candidates for sustainable and effective environmental remediation.</p>

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Bubble-enhanced ultralight aerogels derived from pectin for oil absorption

  • 期刊论文

  • 发表日期：

    2025年4月19日

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  • Zhibiao Chen,
  • Bin Zhan,
  • Shuyi Li,
  • Dongsong Wei,
  • Wenting Zhou,
  • Zhengping Fang,
  • Yan Liu

摘要

With the escalating severity of oily wastewater discharge, the development of novel and efficient adsorption materials is an urgent necessity. Bio-based aerogels, due to their distinctive attributes, including low density, high porosity, sustainability, and safety, have emerged as ideal absorbents for oil spill remediation. In this study, aerogels with ultra-low density were prepared from the renewable biomass material, pectin, through an innovative ice/bubble dual-template method. In this process, with the help of sodium dodecyl sulfate, microbubbles were introduced by high-speed stirring to decrease the density of aerogels. At the same time, phytic acid also played a role in promoting pectin crosslinking and enhancing the flame-retardant properties of aerogels, significantly improving the safety of their transportation and application. After silane modification, the aerogel exhibited ultra-low density (10.91 mg/cm3), exceptional superhydrophobicity (152°), outstanding oil absorption capacity (110 g/g), and flame retardancy. This work underscored the significant and promising prospects of bio-based aerogels in addressing oil pollution challenges, highlighting their potential as optimal candidates for sustainable and effective environmental remediation.