An intelligent displacement pumping film system: A new concept for enhancing heavy metal ion removal efficiency from liquid waste
An intelligent displacement pumping film system: A new concept for enhancing heavy metal ion removal efficiency from liquid waste
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智能置换泵膜系统：提高废液重金属离子去除效率的新理念
DOI：
10.1016/j.jhazmat.2014.04.035
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发表时间：
2014-06-15
影响因子：
13.6
通讯作者：
Abudula, Abuliti
中科院分区：
文献类型：
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作者：
Wang, Zhongde;Feng, Yanting;Abudula, Abuliti
提出了一种具有活塞式质子泵效应的电化学开关离子交换（ESIX）复合膜系统去除重金属离子的概念。基于这一概念，开发了一种新型的ESIX杂化膜，该杂化膜由层状α-磷酸锆（alpha-Zr（HPO 4）（2）; alpha-ZrP）纳米片与电位响应导电聚苯胺（PANI）插层组成，用于去除废水中的Ni 2+离子。预计α-ZrP纳米片之间的空间充当功能离子的储库，而插层的PANI充当这种ESIX杂化膜中活塞式质子泵送的电位敏感功能元件。所制备的ESIX杂化膜具有快速、高选择性去除废水中Ni 2+离子的优良性能。使用过的膜仅通过改变所施加的电势而简单地再生。通过XPS分析证实了这种薄膜对Ni ~（2+）离子的ESIX具有离子泵效应。所提出的ESIX杂化膜应该具有高的潜力，用于在各种工业过程中从废水中去除Ni 2+离子和/或其他重金属离子。(C)2014爱思唯尔有限公司版权所有。
A concept of electrochemically switched ion exchange (ESIX) hybrid film system with piston-like proton pumping effect for the removal of heavy metal ions was proposed. Based on this concept, a novel ESIX hybrid film composed of layered alpha zirconium phosphate (alpha-Zr(HPO4)(2); alpha-ZrP) nanosheets intercalated with a potential-responsive conducting polyaniline (PANI) was developed for the removal of Ni2+ ions from wastewater. It is expected that the space between alpha-ZrP nanosheets acts as the reservoir for the functional ions while the intercalated PANI works as the potential-sensitive function element for piston-like proton pumping in such ESIX hybrid films. The prepared ESIX hybrid film showed an excellent property of rapid removal of Ni2+ ions from wastewater with a high selectivity. The used film was simply regenerated by only altering the applied potential. The ion pumping effect for the ESIX of Ni2+ ions using this kind of film was proved via XPS analysis. The proposed ESIX hybrid film should have high potential for the removal of Ni2+ ions and/or other heavy metal ions from wastewater in various industrial processes. (C) 2014 Elsevier B.V. All rights reserved.