Polyaniline Nanofiber Electrodes for Reversible Capture and Release of Mercury(II) from Water,Journal of the American Chemical Society

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Polyaniline Nanofiber Electrodes for Reversible Capture and Release of Mercury(II) from Water
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2018-10-18 , DOI: 10.1021/jacs.8b09119
Yoonseob Kim ₁ , Zhou Lin ₁ , Intak Jeon ₂ , Troy Van Voorhis ₁ , Timothy M. Swager ₁

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π-Conjugated polyaniline nanofiber networks are an attractive material platform for reversible and selective capture and release of toxic heavy metal ions from water. The nanofiber geometry facilitates fastsorption kinetics, sulfur functionalization of the backbone for improved adsorption, and electrochemical control of the oxidation (charge) state for reversible triggered sorption/desorption of metal ions. These active materials also function as sensors in that the sorption of mercury ions can be detected by analysis of cyclic voltammograms. Calculations of binding energies between polyaniline and metal ions using molecular dynamics and density functional theory support the electrochemically controlled reversible sorption/desorption mechanism. These redox-active materials for removing Hg2+ from water create an attractive system that combines efficiency, capacity, selectivity, and reusability.

中文翻译：

用于从水中可逆地捕获和释放汞 (II) 的聚苯胺纳米纤维电极

π-共轭聚苯胺纳米纤维网络是一种有吸引力的材料平台，可用于从水中可逆和选择性地捕获和释放有毒重金属离子。纳米纤维几何形状有利于快速吸附动力学、骨架的硫官能化以改善吸附，以及氧化（电荷）状态的电化学控制以实现金属离子的可逆吸附/解吸。这些活性材料还用作传感器，因为可以通过循环伏安图分析来检测汞离子的吸附。使用分子动力学和密度泛函理论计算聚苯胺和金属离子之间的结合能支持电化学控制的可逆吸附/解吸机制。

更新日期：2018-10-18

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