Inkjet printing assisted fabrication of polyphenol-based coating membranes for oil/water separation
Inkjet printing assisted fabrication of polyphenol-based coating membranes for oil/water separation
复制标题
喷墨印刷辅助制备用于油/水分离的多酚基涂层膜
DOI：
10.1016/j.chemosphere.2020.126236
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发表时间：
2020-07-01
期刊：
影响因子：
8.8
通讯作者：
Lin, Hongjun
中科院分区：
文献类型：
--
作者：
Li, Renjie;Fan, Hangxu;Lin, Hongjun
虽然基于多酚的涂层被认为是一种有前途的替代功能化膜表面，它通常遭受的问题，低效率的程序和低利用率的多酚化合物，阻碍其大规模实施。为了解决这些问题，本研究提供了第一份报告，喷墨印刷的多酚（邻苯二酚（CA）或单宁酸（TA））和高碘酸钠（SP）的聚偏氟乙烯（PVDF）膜，以改善膜性能。一系列的分析表明，通过喷墨印刷技术，在PVDF膜表面上有效地形成均匀的膜，并改善亲水性。用优化的多酚涂层修饰的PVDF膜表现出良好的油/水分离效率（高于99%），具有比原始膜高5.2倍的高的平均水渗透通量。同时，改性膜在酸性条件下（pH = 2-7）表现出良好的稳定性。本研究提出的新方法简便、成本低、环境友好。所提出的方法和改性膜的优点证明了所提出的方法在实际应用中的重要意义。(C)2020爱思唯尔有限公司保留所有权利。
While polyphenol-based coating has been regarded as a promising alternative to functionalize membrane surface, it usually suffers from problems of low-efficient procedure and low utilization rate of the polyphenolic compounds, hindering its large-scale implementations. To solve these problems, this study provided a first report on inkjet printing of polyphenols (catechol (CA) or tannic acid (TA)) and sodium periodate (SP) on a polyvinylidene fluoride (PVDF) membrane to improve membrane performance. A series of analyses showed the efficient formation of homogenous films on the PVDF membrane surface and the improvement of hydrophilicity by the inkjet printing technique. The PVDF membranes decorated with the optimized polyphenolic coating exhibited a promising oil/water separation efficiency (higher than 99%) with a high average water permeation flux of 5.2 times higher than that of the pristine membrane. Meanwhile, the modified membranes illustrated a good stability under acidic conditions (pH = 2-7). The novel method proposed in this study is facile, cost-saving and environment-friendly. The advantages of the proposed method and the modified membranes demonstrated the great significance of the proposed method in practical applications. (C) 2020 Elsevier Ltd. All rights reserved.