一步共沉积法制备ZSM-5/PANI/PSS电活性膜及其电控选择性分离重金属Pb2+的动力学特性

doi:10.13208/j.electrochem.170517

电化学（中英文） ›› 2018, Vol. 24 ›› Issue (2): 143-153. doi: 10.13208/j.electrochem.170517

一步共沉积法制备ZSM-5/PANI/PSS电活性膜及其电控选择性分离重金属Pb²⁺的动力学特性

乔文磊¹，杜晓²，高凤凤¹，郑君兰¹，李莎莎¹，郝晓刚^1*

1. 太原理工大学化学工程系，山西太原 030024； 2. 南京理工大学化工污染控制与资源化江苏省高校重点实验室，江苏南京 210094

收稿日期:2017-05-17 修回日期:2017-06-09 出版日期:2018-04-28 发布日期:2017-06-12
通讯作者: 郝晓刚 E-mail:xghao@tyut.edu.cn
基金资助:
国家自然科学基金项目（No. 21776191，No. 201706181，No. 21478156），中央高校基本科研业务费专项资金（No. 30916014102）资助

One-Step Co-deposition of ZSM-5/PANI/PSS Electroactive Film and Its Kinetics Characteristics of Electrochemical Control Selective Separation for Pb²⁺ Ions

QIAO Wen-lei¹, DU Xiao², GAO Feng-feng¹, ZHENG Jun-lan¹, LI Sha-sha¹, HAO Xiao-gang^1*

1. Department of Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024. China; 2. Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, Nanjing University of Science and Technology, Nanjing 210094, China

Received:2017-05-17 Revised:2017-06-09 Published:2018-04-28 Online:2017-06-12
Contact: HAO Xiao-gang E-mail:xghao@tyut.edu.cn

摘要/Abstract

摘要： 本文采用双脉冲一步共沉积法制备了ZSM-5/聚苯胺/聚苯乙烯磺酸钠(ZSM-5/PANI/PSS)电活性膜，通过FT-IR、XRD和SEM对ZSM-5/PANI/PSS电活性膜进行了表征. 由水热法合成纳米级ZSM-5颗粒，经超声处理将ZSM-5分散，有利于合成均匀的ZSM-5/PANI/PSS电活性膜. 实验结果表明该电活性膜对Pb²⁺具有优良的选择分离性能，在10 mg﹒L^-1的Pb²⁺溶液中电控离子交换法对Pb²⁺的去除率是传统离子交换法的2.3倍，且前者的平衡吸附量是后者的2.5倍. 吸附过程满足Langmuir等温吸附方程，ZSM-5/PANI/PSS电活性膜对Pb²⁺的交换量高达235 mg·g^-1. 吸附过程为准一级动力学吸附，电控离子交换过程的准一级吸附速率常数(0.0227 g·mg^-1·min^-1)明显高于传统离子交换(0.0117 g·mg^-1·min^-1). 该电活性膜在电控离子交换处理废水领域具有很好的应用前景.

关键词: 电控离子交换, ZSM-5/PANI/PSS, 吸附选择性, Pb²⁺, 吸附动力学

Abstract: A novel electroactive composite film consisting of ZSM-5/polyaniline/polystyrene sulfonate(ZSM-5/PANI/PSS) was prepared by double pulse one step co-deposition method. The ZSM-5/PANI/PSS composite film was characterized by FT-IR, SEM, XRD, and XPS techniques. The highly crystalline nano-ZSM-5 was synthesized by hydrothermal method, which could be evenly dispersed in aqueous solution by ultrasonic treatment. The synthesis condition of composite film was optimized through changing the pH value of solution. The ZSM-5/PANI/PSS composite film showed higher adsorption capacity for Pb²⁺ions. Langmuir model was applied to analyze the adsorption process. The adsorption capacity of composite film for Pb²⁺ ions was 235 mg·g^-1. The adsorption kinetics of Pb²⁺ions could be described properly by the pseudo-first-order kinetic mode.Furthermore, the pseudo-first-order rate constant was determined to be 0.0227 g·mg^-1·min^-1 in ESIX process, which is higher than that of 0.0117 g·mg^-1·min^-1 in IX process. Therefore, the ZSM-5/PANI/PSS composite film is expected to be a promising material in the field of waste treatment.

Key words: electrochemically switched ion exchange, ZSM-5/PANI/PSS, adsorption selectivity, Pb²⁺, adsorption kinetics

中图分类号:

O646

乔文磊，杜晓，高凤凤，郑君兰，李莎莎，郝晓刚. 一步共沉积法制备ZSM-5/PANI/PSS电活性膜及其电控选择性分离重金属Pb²⁺的动力学特性[J]. 电化学（中英文）, 2018, 24(2): 143-153.

QIAO Wen-lei, DU Xiao, GAO Feng-feng, ZHENG Jun-lan, LI Sha-sha, HAO Xiao-gang. One-Step Co-deposition of ZSM-5/PANI/PSS Electroactive Film and Its Kinetics Characteristics of Electrochemical Control Selective Separation for Pb²⁺ Ions[J]. Journal of Electrochemistry, 2018, 24(2): 143-153.

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一步共沉积法制备ZSM-5/PANI/PSS电活性膜及其电控选择性分离重金属Pb²⁺的动力学特性

One-Step Co-deposition of ZSM-5/PANI/PSS Electroactive Film and Its Kinetics Characteristics of Electrochemical Control Selective Separation for Pb²⁺ Ions

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