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<p>The growth of uranium-containing wastewater poses risks to resource recovery and the environment, creating an urgent need for efficient and selective adsorbents. Herein, a carbon nanotubes/polyacrylamide/sodium alginate (CNT/PAM/SA) dual-network membrane for efficient uranium adsorption was fabricated. This novel membrane demonstrates a high maximum capacity of 651.39&#xa0;mg&#xa0;g<sup>−1</sup> and rapid kinetics. Characterizations reveal a synergistic mechanism involving chemical complexation between U(VI) and functional groups, alongside physical adsorption by CNT. The enhanced mechanical stability provided by CNT contributes to superior performance, making the CNT/PAM/SA membrane a promising candidate for environmental uranium remediation.</p>

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Dual-network carbon nanotube/polyacrylamide/sodium alginate membranes for high-performance uranium adsorption

  • 期刊论文

  • 发表日期：

    2026年5月21日

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  • Tingting Li,
  • Fang Wang

摘要

The growth of uranium-containing wastewater poses risks to resource recovery and the environment, creating an urgent need for efficient and selective adsorbents. Herein, a carbon nanotubes/polyacrylamide/sodium alginate (CNT/PAM/SA) dual-network membrane for efficient uranium adsorption was fabricated. This novel membrane demonstrates a high maximum capacity of 651.39 mg g−1 and rapid kinetics. Characterizations reveal a synergistic mechanism involving chemical complexation between U(VI) and functional groups, alongside physical adsorption by CNT. The enhanced mechanical stability provided by CNT contributes to superior performance, making the CNT/PAM/SA membrane a promising candidate for environmental uranium remediation.