碳氧甲基纤维素和金属有机框架被固定成聚烯胺凝,用于从海水中超高效和选择性吸附U (VI) 基
Peipei Yang1, Yucheng Song2, Jian Sun2
1State Key Laboratory of Structural Analysis, Optimization and CAE Software for Industrial Equipment, National Engineering Research Center for Advanced Polymer Processing Technology, Key Laboratory of Materials Processing and Mold (Ministry of Education), Zhengzhou University, Zhengzhou 450002, China; Henan Tuoren Medical Device Co., Ltd., Weiyuan Industrial Park, Changyuan 453400, China.
International journal of biological macromolecules
|March 26, 2024
概括
本研究介绍了一种新的金属有机框架 (MOF) - - 聚合物凝,用于高效的提取. 新材料克服了MOF聚合物,提高了吸附能力和稳定性,用于实际的海水应用.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 纳米技术 纳米技术
背景情况:
- 金属有机框架 (MOF) - 聚合物混合水凝为提取提供了潜力,但面临着MOF聚合和差的界面兼容性等挑战.
- 传统的合成方法导致吸附动力学缓慢,并限制MOF粉末的可加工性.
研究的目的:
- 开发一种可加工的MOF-聚合物混合水凝,具有增强的吸附性能.
- 解决MOF聚合问题,改善填充剂-聚合物界面兼容性,以实现高效的提取.
主要方法:
- 采用网络修复策略,将ZIF-67 (一种MOF) 植入碳素甲基纤维素/聚烯胺 (CMC/PAM) 水凝中.
- 在CMC/PAM上,碳基和氨基基组促进了ZIF-67的均生长,通过协调键创建了定向的微通道.
主要成果:
- 开发的CMC/PAM/ZIF-67水凝具有952 mg/g的最大吸附能力.
- 吸附遵循伪二次动力学和兰格穆尔异热模型.
- 在十个吸附-脱附周期中,水凝保持了87.3%的去除效率,并且在真实海水中显示出显著的吸附 (在20天后9.95 mg/g).
结论:
- 网络修复策略有效地消除了ZIF-67聚合物,并增强了界面兼容性.
- 该CMC/PAM/ZIF-67水凝表现出优越的性能从海水取由于改善的扩散和高吸附能力.
- 这种MOF-聚合物混合水凝是可持续回收的有希望的候选者.
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