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首页> 外文期刊>ACS applied materials & interfaces >Fibrous Materials Based on Polymeric Salicyl Active Esters as Efficient Adsorbents for Selective Removal of Anionic Dye
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Fibrous Materials Based on Polymeric Salicyl Active Esters as Efficient Adsorbents for Selective Removal of Anionic Dye

机译：基于聚合物水杨酸活性酯作为高效吸附剂的纤维材料，用于选择性去除阴离子染料

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摘要

To increase the performance efficiency and decrease the costs for organic dye wastewater purification, two fibrous adsorbents based on polymeric salicyl active esters were developed by means of a simple two-step approach. For the first time, salicyl-based active ester polymers were electrospun into fibrous membranes and subsequently postmodified with the desired functional groups under simple and mild reaction conditions. The morphology of the produced fibrous adsorbents was characterized by scanning electron microscopy (SEM), the surface properties were analyzed by nitrogen adsorption/desorption isotherms and contact angle measurements, and the completeness of the postmodification process was determined by Fourier transform infrared (FTIR) and elemental analyses. The adsorbents were further tested for their adsorption and selectivity performance of different organic dyes as well as for their recyclability. To explore the adsorption mechanism, four kinetic models and three isotherm models were used to analyze the adsorption data. The results indicated that the fibrous adsorbents showed an extremely high adsorption capacity for the anionic dye methyl blue. The fibrous adsorbents were also able to selectively adsorb anionic dyes from a mixture of anionic and cationic dyes, and they could be recycled at least 10 times. The simple and cost-efficient development process of these fibrous adsorbents and their excellent performance make them promising materials for further research and application in the area of water treatment.
机译：为了提高性能效率并降低有机染料废水净化的成本，通过简单的两步方法开发了基于聚合物水杨酸活性酯的两种纤维吸附剂。首先，将基于水杨基的活性酯聚合物电纺成纤维膜，随后在简单和温和的反应条件下用所需的官能团被预发布。通过扫描电子显微镜（SEM），表征产生的纤维吸附剂的形态，通过氮吸附/解吸等温和接触角测量分析表面性质，并且通过傅里叶变换红外（FTIR）测定后修改过程的完整性。元素分析。进一步测试吸附剂的吸附和选择性性能以及它们的可回收性。为了探索吸附机制，使用四种动力学模型和三个等温模型来分析吸附数据。结果表明，纤维状吸附剂对阴离子染料甲基蓝的吸附能力极高。纤维状吸附剂还能够选择性地吸收来自阴离子和阳离子染料的混合物的阴离子染料，并且它们可以再循环至少10次。这些纤维吸附剂的简单且经济高效的开发过程及其优异的性能使其成为在水处理领域进一步研究和应用的有希望的材料。

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