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首页> 外文期刊>Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers >Thiol-functionalized electrospun polyacrylonitrile nanofibrous membrane for highly efficient removal of mercury ions
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Thiol-functionalized electrospun polyacrylonitrile nanofibrous membrane for highly efficient removal of mercury ions

机译：Thiol-functionalized实际上电纺聚丙烯腈nanofibrous膜高效去除汞离子

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摘要

Mercury ions pollution has threatened people's health. Conventional nano-adsorbents suffer from the aggregation and later separation, novel adsorbent with high adsorption performance and easy recover properties is highly needed. In this study, thiol-functionalized electrospun polyacrylonitrile (PAN) nanofibrous membrane was obtained and used as easy recovery adsorbent for mercury ions. The morphologies and chemical composition were studied using SEM, TEM, ATR-FTIR, XRD and XPS. The results indicated that mercury adsorption performance was pH sensitive and the optimal pH range for mercury ions adsorption was about 5.5-6.0. The adsorption equilibrium reached within 25 min, and the adsorption process can be described using the pseudo-second-order model. Isotherm data fitted well to the Langmuir isotherm model. After adsorption of mercury ions, the thiol-functionalized nanofibrous membranes can be regenerated, and the adsorption efficiency maintained up to 90% after three times of usage. (C) 2016 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
机译：汞离子污染威胁人民健康。后来聚合和分离,小说吸附剂吸附性能和高容易恢复特性是非常必要的。研究中,thiol-functionalized实际上电纺聚丙烯腈(PAN) nanofibrous膜获得和使用简单恢复吸附剂汞离子。成分进行了研究使用SEM, TEM,ATR-FTIR、XRD和XPS。汞吸附性能pH敏感和汞离子的最佳pH值范围吸附是5.5 - -6.0。平衡达到在25分钟,吸附过程可以描述使用pseudo-second-order模型。朗缪尔等温线模型。汞离子的吸附thiol-functionalized nanofibrous膜再生,吸附效率三次使用后保持高达90%。(C) 2016化学工程师学会。爱思唯尔出版的帐面价值保留所有权利。

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