Electrically Pore-Size-Tunable Polypyrrole Membrane for Antifouling and Selective Separation

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境水质学国家重点实验室

	Electrically Pore-Size-Tunable Polypyrrole Membrane for Antifouling and Selective Separation
	Tan, Xiao ; Hu, Chengzhi ; Zhu, Zongqiang ; Liu, Huijuan ; Qu, Jiuhui
刊名	ADVANCED FUNCTIONAL MATERIALS
	2019-08-01
卷号	29 期号:35 页码:-
关键词	conducting polymers electrochemistry ultrafiltration water treatment
ISSN号	1616-301X
英文摘要	Antifouling and selectivity are major challenges for membrane separation technology. Herein, a polypyrrole-dodecylbenzene sulfonate (PPy-DBS) membrane with tunable pores is fabricated to alleviate pore blocking and achieve selective separation. The insertion/extraction of ions during the electrical redox process causes the change of PPy-DBS volume, so that the membrane pores can be tuned in situ by applying an external redox potential. The pore size of a fouled membrane is enlarged under an oxidation voltage, then the membrane is backwashed to eliminate foulants in the pores, after which membrane pore size is recovered under a reduction voltage. Thus, membrane fouling can be effectively alleviated by adjusting the membrane pore size combined with cleaning. The specific flux of PPy-DBS membrane increased by 21.91% after applying the voltages and backwashing, and it exhibits great recycling performance. Moreover, the distribution of humic acid macromolecules in the permeate significantly decreased, proving the enhanced sieving effect of smaller membrane pores under negative voltage. This study provides an intelligent strategy for fouling prevention and selective separation in water treatment.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/42644]
专题	生态环境研究中心_环境水质学国家重点实验室
作者单位	1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China 2.Guilin Univ Technol, Guangxi Key Lab Environm Pollut Control Theory &, Guilin 541004, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Tan, Xiao,Hu, Chengzhi,Zhu, Zongqiang,et al. Electrically Pore-Size-Tunable Polypyrrole Membrane for Antifouling and Selective Separation[J]. ADVANCED FUNCTIONAL MATERIALS,2019,29(35):-.
APA	Tan, Xiao,Hu, Chengzhi,Zhu, Zongqiang,Liu, Huijuan,&Qu, Jiuhui.(2019).Electrically Pore-Size-Tunable Polypyrrole Membrane for Antifouling and Selective Separation.ADVANCED FUNCTIONAL MATERIALS,29(35),-.
MLA	Tan, Xiao,et al."Electrically Pore-Size-Tunable Polypyrrole Membrane for Antifouling and Selective Separation".ADVANCED FUNCTIONAL MATERIALS 29.35(2019):-.