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首页> 外文期刊>Advanced Functional Materials >Superhydrophobic, Surfactant-doped, Conducting Polymers for Electrochemically Reversible Adsorption of Organic Contaminants
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Superhydrophobic, Surfactant-doped, Conducting Polymers for Electrochemically Reversible Adsorption of Organic Contaminants

机译：超疏水，表面活性剂掺杂的导电聚合物，用于有机污染物的电化学可逆吸附

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Polymeric adsorbents show great potential for the replacement of activated carbon for removing a wide range of toxic organic pollutants from wastewater streams since they do not suffer from costly regeneration needs and high attrition rates. Herein, an electrochemically regenerable polymeric adsorbent based on an intrinsically conducting polymer (CP), polypyrrole (PPy), doped with anionic surfactant dioctylsulfosuccinate (AOT), denoted PPy(AOT), for mitigating organic pollutants in wastewater is reported. A facile electropolymerization protocol to synthesize highly porous PPy(AOT) is developed, with an adsorption capacity of greater than 570 mg pollutant/g polymer in its superhydrophobic oxidized state. It is demonstrated that the hydrophobicity of PPy(AOT) and hence its affinity for organics can be modulated electrochemically through the re-orientation of AOT dopants, which can be exploited to regenerate the adsorbent and use it repeatedly for multiple adsorption/desorption cycles. It also explores the interactions between the adsorbed organic molecules and the surfactant-doped CP adsorbent using a combined density functional theory and molecular dynamics approach to elucidate the mechanism of electrochemical modulations of hydrophobicity and affinity of the material. The physicochemical insights are significant for developing broader applications of such material in drug delivery, sensing, self-cleaning surfaces, microfluidics, and artificial muscles.%1801466.1-1801466.12
机译：聚合吸附剂显示出巨大的潜力，可以替代活性炭，以去除废水中的多种有毒有机污染物，因为它们无需承受昂贵的再生需求和高损耗率。在本文中，报道了一种基于固有导电聚合物（CP），聚吡咯（PPy）的电化学可再生聚合物吸附剂，该聚合物掺杂有阴离子表面活性剂二辛基磺基琥珀酸酯（AOT），表示为PPy（AOT），用于减轻废水中的有机污染物。开发了一种可轻松合成高度多孔PPy（AOT）的电聚合方案，在超疏水氧化态下，其吸附容量大于570 mg污染物/ g聚合物。结果表明，PPy（AOT）的疏水性及其对有机物的亲和力可以通过AOT掺杂剂的重新取向进行电化学调节，可用于再生吸附剂并将其重复用于多个吸附/解吸循环。它还使用组合的密度泛函理论和分子动力学方法探索了吸附的有机分子与表面活性剂掺杂的CP吸附剂之间的相互作用，以阐明材料的疏水性和亲和性的电化学调节机理。理化方面的见解对于在药物输送，传感，自清洁表面，微流体和人造肌肉中开发此类材料的广泛应用具有重要意义。％1801466.1-1801466.12

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