Reductant-assisted polydopamine-modified membranes for efficient water purification

作     者：Feng Sun Jinren Lu Yuhong Wang Jie Xiong Congjie Gao Jia Xu Feng Sun;Jinren Lu;Yuhong Wang;Jie Xiong;Congjie Gao;Jia Xu

作者机构：Key Laboratory of Marine Chemistry Theory and Technology(Ministry of Education)School of Materials Science and EngineeringCollege of Chemistry and Chemical EngineeringOcean University of ChinaQingdao 266100China National Center of Ocean Standards and MetrologyTianjin 300112China 

出 版 物：《Frontiers of Chemical Science and Engineering》 (化学科学与工程前沿（英文版）)

年 卷 期：2021年第15卷第1期

页      面：109-117页

核心收录：

学科分类：08[工学] 0815[工学-水利工程] 

基　　金：This work was supported by the National Natural Science Foundation of China(Grant No.21878279) Fundamental Research funds for the Central Universities(No.201841012) Natural science fund of Shandong Province Project(No.ZR2018MB032) 

主　　题：membrane water purification polydopamine reducing environment self-polymerization control 

摘      要：Surface engineering with polydopamine coatings has been considered a promising surface functionalisation ***,it is difficult to control the self-polymerisation for polydopamine formation,which usually causes severe interparticle *** this study,polydopamine self-polymerisation was controlled by adjusting its reducing environment using a reductant(NaBH4)to fabricate mixed cellulose ester(MCE)/polydopamine *** oxidising environment using NaIO4 was additionally tested as the *** results showed that a thin polydopamine coating with small polydopamine particles was formed on the skeleton frameworks of the MCE membrane with NaBH4,and the self-polymerisation rate was *** polydopamine coating formed in the reducing environment facilitated excellent water transport performance with a water permeance of approximately 400 L·m^(−2)·h^(−1)·bar^(−1) as well as efficient organic foulant removal with a bovine serum albumin rejection of approximately 90%.In addition,the polydopamine coating with NaBH4 exhibited both excellent chemical stability and anti-microbial activity,demonstrating the contribution of the reducing environment to the performance of the MCE/polydopamine *** shows significant potential for use in water purification.