A high-efficiency porous adsorbent, MOF-199/carboxylated cellulose fibers (MOF-199/CCF), was synthesized in situ at room temperature through carboxylation modification, simple sonication, and vacuum drying. The sonication method produced small MOF-199 particles (tens of nanometers), which allowed for uniform distribution of MOF-199 on CCF and improved its efficiency. The presence of CCF carriers reduces the agglomeration of MOF-199 and enhances its performance. The BET-specific surface area of MOF-199/CCF is 264.83 m² g⁻¹, which is much larger than that of CCF (2.31 m² g⁻¹), proving the successful modification of CCF by MOF-199. MOF-199/CCF exhibits better adsorption capacity than CCF, with an adsorption capacity of 659.6 mg g⁻¹ of methylene blue within 30 minutes, and good recycling performance. This work presents a straightforward method for preparing efficient cellulose-based adsorbent materials and offers a novel approach for synthesizing MOF composites.

中文翻译：

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超声辅助原位合成羧化纤维素纤维表面MOF-199高效吸附亚甲基蓝

通过羧化修饰、简单超声处理和真空干燥，在室温下原位合成了高效多孔吸附剂MOF-199/羧化纤维素纤维（MOF-199/CCF）。超声处理方法产生了小的 MOF-199 颗粒（数十纳米），使得 MOF-199 在 CCF 上均匀分布并提高了其效率。 CCF载体的存在减少了MOF-199的团聚并提高了其性能。 MOF-199/CCF的BET比表面积为264.83 m ² g ^-1，远大于CCF的2.31 m ² g ^-1，证明MOF-199对CCF的成功修饰。 MOF-199/CCF表现出比CCF更好的吸附能力， 30分钟内对亚甲基蓝的吸附量达到659.6 mg g ^-1 ，且回收性能良好。这项工作提出了一种制备高效纤维素基吸附材料的简单方法，并提供了一种合成 MOF 复合材料的新方法。