文献类型：期刊文献

英文题名：A One-Step Rapid Assembly of Thin Film Coating Using Green Coordination Complexes for Enhanced Removal of Trace Organic Contaminants by Membranes

作者：Guo, Hao[1];Yao, Zhikan[1];Yang, Zhe[1];Ma, Xiaohua[1,2];Wang, Jianqiang[1,3];Tang, Chuyang Y.[1]

机构：[1]Univ Hong Kong, Dept Civil Engn, Pokfulam, Hong Kong, Peoples R China;[2]East China Univ Sci & Technol, Chem Engn Res Ctr, Shanghai Key Lab Multiphase Mat Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[3]Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Polymer & Composite Div, Ningbo 315201, Zhejiang, Peoples R China

年份：2017

卷号：51

期号：21

起止页码：12638

外文期刊名：ENVIRONMENTAL SCIENCE & TECHNOLOGY

收录：;EI(收录号：20182305267942);WOS:【SCI-EXPANDED(收录号:WOS:000414887200066)】；

基金：The study is supported by the General Research Fund (Project number 17207514) by the Research Grants Council of Hong Kong. We also appreciate the partial support received from NSFC/RGC Joint Research Scheme sponsored by the Research Grants Council of Hong Kong and the National Natural Science Foundation of China (N_HKU706/16). We thank Dow Chemical Co. for providing membrane samples and Miss. Vicky Fung for TOC analysis. The School of Biological Science in The University of Hong Kong is appreciated for providing the instrumental analysis platform.

语种：英文

外文关键词：Iron compounds - Sodium chloride - Coordination reactions - Nanofiltration membranes - Nanofiltration - Pore size - Thin films

摘要：We report a fast, simple, and green coating method using the coordination complex of tannic acid (TA) and ferric ion (Fe3+) to enhance the removal of trace organic contaminants (TrOCs) by polyamide membranes. The entire coating process can be completed in less than 2 min; quartz crystal microbalance characterization revealed that a TA-Fe thin film formed in merely 10-20 s. Coating this TA Fe thin film on a commercial nanofiltration membrane (NF270) reduced its effective pore size from 0.44 to 0.40 nm. The TA-Fe-coated NF270 showed significantly increased rejection of both NaCl and trace organic contaminants. In comparison with the more-time-consuming polydopamine coating (e.g., 0.5 h), the TA-Fe coating presented greater resistance to TrOC permeation (i.e., lower permeability of TrOCs). The advantages of the fast coating process, greatly improved rejection performance, and use of green accessible materials make TA-Fe a highly promising coating material for large-scale applications.