Tailoring the Performance of Organic Solvent Nanofiltration Membranes with Biophenol Coatings
Tailoring the Performance of Organic Solvent Nanofiltration Membranes with Biophenol Coatings
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DOI：
10.1021/acsapm.8b00161
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发表时间：
2019-03-01
影响因子：
5
通讯作者：
Szekely, Gyorgy
中科院分区：
文献类型：
--
作者：
Fei, Fan;Hai Anh Le Phuong;Szekely, Gyorgy
本研究报告了一个系统的研究微调与生物酚涂层的纳滤膜的过滤性能，以生产耐溶剂膜与390-1550克摩尔（-1）的分子量截留（MWCO）和0.5-40 L米（-2）小时（-1）巴（-1）渗透。以六种廉价的生物酚（多巴胺、单宁酸、香草醇、丁香酚、桑色素和槲皮素）为原料，采用相同的氧化剂促进聚合反应制备了六种疏松的非对称膜载体：聚酰亚胺（PI）、聚丙烯腈（PAN）、聚砜（PSf）、聚偏二氟乙烯（PVDF）、聚苯并咪唑（PBI）和聚二甲基硅氧烷（PDMS）。采用傅里叶变换红外光谱（FTIR）对涂层进行表征，采用扫描电子显微镜（SEM）和原子力显微镜（AFM）对涂层的形貌进行表征。在12种有机溶剂中测试了42种膜的长期稳定性，包括新兴的绿色溶剂MeTHF和Cyrene。生物酚涂层导致更紧密的膜，MWCO降低12-79%，而丙酮渗透率降低22-92%。
This study reports a systematic investigation of fine-tuning the filtration performance of nanofiltration membranes with biophenol coatings to produce solvent-resistant membranes with 390-1550 g mol(-1) molecular weight cutoff (MWCO) and 0.5-40 L m(-2) h(-1) bar(-1) permeance. Six kinds of inexpensive, commercial biophenols (dopamine, tannic acid, vanillyl alcohol, eugenol, morin, and quercetin) were subjected to identical oxidant-promoted polymerization to coat six kinds of loose asymmetric membrane supports: polyimide (PI), polyacrylonitrile (PAN), polysulfone (PSf), polyvinylidene difluoride (PVDF), polybenzimidazole (PBI), and polydimethylsiloxane (PDMS). The coatings were characterized by Fourier-transform infrared spectroscopy (FTIR), and the morphologies were characterized by scanning electron microscopy (SEM) and atomic force microscopy (AFM). The long-term stability of 42 membranes were tested in 12 organic solvents, including emerging green solvents MeTHF and Cyrene. The biophenol coatings led to tighter membranes with a decrease in MWCO of 12-79% at a penalty of a 22-92% permeance decrease in acetone.