A potential-controlled ion pump based on a three-dimensional PPy@GO membrane for separating dilute lead ions from wastewater
A potential-controlled ion pump based on a three-dimensional PPy@GO membrane for separating dilute lead ions from wastewater
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基于三维PPy@GO膜的电势控制离子泵用于分离废水中的稀铅离子
DOI：
10.1016/j.electacta.2017.03.187
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发表时间：
2017-05
影响因子：
6.6
通讯作者：
Guan Guoqing
中科院分区：
文献类型：
--
作者：
Gao Fengfeng;Du Xiao;Hao Xiaogang;Li Shasha;Zheng Junlan;Yang Yanyan;Han Nianchen;Guan Guoqing
基于电化学切换离子选择透过（ESIP）技术，在新型电位控制离子泵系统中，制备了三维聚吡咯（PPy）@氧化石墨烯（GO）复合膜，用于废水中稀铅的连续分离。以不锈钢丝网（SSWM）为导电基底，在电解质水溶液中，通过简单的一步电化学共沉积法制备了3D PPy@GO复合膜。在该体系中，通过调节PPy@GO膜的氧化还原状态并将其与外电场耦合，实现了Pb2+的定向摄取/释放.脉冲电位与细胞电位的耦合形成了一种新型的电位控制离子泵系统，控制Pb2+的转运。研究了3D PPy@GO膜的选择渗透性以及电池电位、脉冲宽度、脉冲电位和初始浓度对Pb 2+通量的影响。3D PPy@GO复合物涂覆的电极显示出优异的Pb2+选择透过性，通量为4.7 g m-2h-1，电流效率为51.9%，并且具有优异的循环稳定性。Pb2+浓度从源溶液中的20 ppm降低到0.8 ppm，去除率为96%。这种基于3D PPy@GO膜的ESIP系统可用作废水处理的新技术。
A three-dimensional (3D) polypyrrole (PPy)@graphene oxide (GO) composite membrane was developed for the continuous separation of dilute Pb2+from wastewater in a novel potential-controlled ion pump system based on an electrochemically switched ion permselectivity (ESIP) method. The 3D PPy@GO composite membrane was fabricatedviaa simple one-step electrochemical co-deposition way in an aqueous electrolyte solution using a stainless steel wire mesh (SSWM) as the conductive substrate. In this system, the directional uptake/release of Pb2+was realized by modulating the redox state of the PPy@GO membrane and coupling it with an external electric field. The coupling of the pulse potential and cell potential formed a novel potential-controlled ion pump system which controlled the transport of Pb2+. The permselectivity of the 3D PPy@GO membrane and the effects of the cell potential, pulse width, pulse potential and initial concentration on the Pb2+flux were investigated. The 3D PPy@GO composite coated electrodes showed excellent permselectivity of Pb2+with a flux of 4.7 g m−2h−1, a current efficiency of 51.9% and excellent cycling stability. The Pb2+concentration was reduced from 20 ppm in the source solution to 0.8 ppm with a removal percentage of 96%. This 3D PPy@GO membrane-based ESIP system could be used as a novel technique for wastewater treatment.
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影响因子：
8.6
作者：
Xiaogang Hao† and;D. Schwartz
通讯作者：
Xiaogang Hao† and;D. Schwartz
影响因子：
6.6
作者：
Murugesan Rajesh;C. J. Raj;B. C. Kim;Bo-Bae Cho;J. Ko;K. Yu
通讯作者：
Murugesan Rajesh;C. J. Raj;B. C. Kim;Bo-Bae Cho;J. Ko;K. Yu
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
影响因子：
13.6
作者：
Wang, Zhongde;Feng, Yanting;Abudula, Abuliti
通讯作者：
Abudula, Abuliti
影响因子：
17.6
作者：
Lin, Ziyin;Waller, Gordon H.;Wong, Ching-ping
通讯作者：
Wong, Ching-ping
影响因子：
15.1
作者：
Parajuli, Durga;Takahashi, Akira;Kawamoto, Tohru
通讯作者：
Kawamoto, Tohru