2 溶液中的電控離子交換性能。分別在碳納米管(CNTs)和PANI納米纖維修飾的Au基體上制備了不同結(jié)構(gòu)的α-ZrP/PANI雜化膜,并結(jié)合電化學(xué)石英晶體微天平(EQCM)技術(shù),原位檢測(cè)雜化膜的生長(zhǎng)過(guò)程,分析其成膜機(jī)理。研究結(jié)果表明,在PANI纖維上制備的雜化膜因其三維多孔結(jié)構(gòu)具有更高的離子交換容量；α-ZrP上的P-OH不僅能夠?yàn)榫郾桨费趸€原提供氫質(zhì)子,而且對(duì)Pb2 表現(xiàn)出良好的吸附選擇性,使該膜在中性含Pb2 溶液中表現(xiàn)出良好的電活性。通過(guò)控制該雜化膜的氧化還原狀態(tài)可以實(shí)現(xiàn)對(duì)重金屬Pb2 離子的選擇性分離和回收。"/>

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α-ZrP/PANI電控離子交換膜對(duì)Pb2 的選擇性分離
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太原理工大學(xué)化學(xué)化工學(xué)院,太原理工大學(xué)化學(xué)化工學(xué)院,太原理工大學(xué)化學(xué)化工學(xué)院,太原理工大學(xué)化學(xué)化工學(xué)院,太原理工大學(xué)化學(xué)化工學(xué)院,太原理工大學(xué)化學(xué)化工學(xué)院,太原理工大學(xué)化學(xué)化工學(xué)院

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O646

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國(guó)家自然科學(xué)基金資助(項(xiàng)目號(hào)21276173,21476156)


Selective Separation of Pb2 with Electrochemically Switched ion exchange film of α-ZrP/PANI
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Department of Chemical Engineering,Taiyuan University of Technology,Department of Chemical Engineering,Taiyuan University of Technology,Department of Chemical Engineering,Taiyuan University of Technology,Department of Chemical Engineering,Taiyuan University of Technology,Department of Chemical Engineering,Taiyuan University of Technology,Department of Chemical Engineering,Taiyuan University of Technology,Department of Chemical Engineering,Taiyuan University of Technology

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    摘要:

    采用電化學(xué)方法在水相中合成了一種新型的電活性α-磷酸鋯(α-ZrP)/聚苯胺(PANI)陽(yáng)離子交換材料,考察該膜在含Pb2 溶液中的電控離子交換性能。分別在碳納米管(CNTs)和PANI納米纖維修飾的Au基體上制備了不同結(jié)構(gòu)的α-ZrP/PANI雜化膜,并結(jié)合電化學(xué)石英晶體微天平(EQCM)技術(shù),原位檢測(cè)雜化膜的生長(zhǎng)過(guò)程,分析其成膜機(jī)理。研究結(jié)果表明,在PANI纖維上制備的雜化膜因其三維多孔結(jié)構(gòu)具有更高的離子交換容量；α-ZrP上的P-OH不僅能夠?yàn)榫郾桨费趸€原提供氫質(zhì)子,而且對(duì)Pb2 表現(xiàn)出良好的吸附選擇性,使該膜在中性含Pb2 溶液中表現(xiàn)出良好的電活性。通過(guò)控制該雜化膜的氧化還原狀態(tài)可以實(shí)現(xiàn)對(duì)重金屬Pb2 離子的選擇性分離和回收。

    Abstract:

    A novel electroactive α-ZrP/PANI hybrid film with cation exchange property was synthesized by electrochemical method in aqueous solution. The electrochemically switched ion exchange capacity of this film was investigated in 0.1 M Pb(NO3)2. The α-ZrP/PANI hybrid films with different structures were prepared on carbon nanotubes (CNTs) and PANI nanofibers modified Au electrodes. The fabrication process and formation mechanism were analyzed by electrochemical quartz crystal microbalance (EQCM). The results shows that the hybrid film prepared on PANI fibers exhibited higher ion exchange capacity because of its three-dimensional porous structure; The P-OH of α-ZrP not only provides protons for the redox of PANI but also shows adsorption selectivity for Pb2 , which makes this hybrid film perform good electroactivity in neutral solution containing Pb2 . Therefore, this hybrid film could be served as an ESIX material for separation and recovery of Pb2 by controlling the oxidation-reduction of hybrid film.

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馬旭莉,張權(quán),杜曉,郝曉剛,李修敏,喬文磊,李莎莎.α-ZrP/PANI電控離子交換膜對(duì)Pb2 的選擇性分離[J].稀有金屬材料與工程,2016,45(8):2139~2145.[MA Xuli, ZHANG Quan, DU Xiao, HAO Xiaogang, LI Xiumin, QIAO Wenlei, LI Shasha. Selective Separation of Pb2 with Electrochemically Switched ion exchange film of α-ZrP/PANI[J]. Rare Metal Materials and Engineering,2016,45(8):2139~2145.]
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  • 收稿日期:2015-09-10
  • 最后修改日期:2015-09-27
  • 錄用日期:2015-10-15
  • 在線發(fā)布日期: 2016-10-09
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