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Fabrication of Antiswelling Loose Nanofiltration Membranes via a "Selective-Etching-Induced Reinforcing" Strategy for Bioseparation
Guo, Shiwei; Zhang, Huiru; Chen, Xiangrong; Feng, Shichao; Wan, Yinhua; Luo, Jianquan
2021-04-28
Source PublicationACS APPLIED MATERIALS & INTERFACES
ISSN1944-8244
Volume13Issue:16Pages:19312-19323
AbstractWith diverse selectivity, higher permeance, and good antifouling property, loose polyamide nanofiltration (NF) membranes can be potentially deployed in various bioseparation applications. However, the loose NF membrane with a low crosslinking degree generally suffers from the alkali-induced pore swelling during chemical cleaning, resulting in degradation of separation performance with time. In this work, we conceive a novel strategy to tailor the separating layer through alkaline post-etching following the interfacial polymerization process, where piperazine and tannic acid (TA) were used as water-phase monomers, and trimesoyl chloride (TMC) and ferric acetylacetonate were employed as organic monomers in n-hexane. Thereinto, the polyester network formed by TA and TMC was selectively etched by alkaline treatment, thus obtaining a loose NF membrane, whose structure and performance could be facilely tailored by controlling the TA ratio and the etching pH. As a result, the well-designed loose NF membrane exhibited higher flux, better selectivity, and more stable separation performance in a long-term filtration of diluted cane molasses. Interestingly, the obtained loose NF membrane showed excellent antiswelling ability during alkaline cleaning because of network locking induced by Fe3+ chelation, decrease in the carboxyl proportion (more hydroxyl generation due to the ester bond hydrolysis), and enhanced interface interaction between the separation layer and the sublayer attributed to catechol adhesion effect. Therefore, such a "selective-etchinginduced reinforcing" strategy could endow the polyamide NF membrane with both loose and antiswelling separation layer in a reliable and scalable way, which provides a new perspective for preparing highly selective and stable NF membrane for resource recovery.
Keywordmembrane fouling membrane cleaning antiswelling polyamide decolorization
DOI10.1021/acsami.1c02611
Language英语
WOS KeywordFILM ; PERFORMANCE ; HYDROLYSIS ; FLUX
Funding ProjectProvince Key Research and Development Program of Shandong[2019JZZY010348] ; Science and Technology Service Network Program of the Chinese Academy of Sciences[KFJ-STS-QYZX-096]
WOS Research AreaScience & Technology - Other Topics ; Materials Science
WOS SubjectNanoscience & Nanotechnology ; Materials Science, Multidisciplinary
Funding OrganizationProvince Key Research and Development Program of Shandong ; Science and Technology Service Network Program of the Chinese Academy of Sciences
WOS IDWOS:000645520700093
PublisherAMER CHEMICAL SOC
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Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/48723
Collection中国科学院过程工程研究所
Corresponding AuthorWan, Yinhua; Luo, Jianquan
AffiliationChinese Acad Sci, Univ Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Guo, Shiwei,Zhang, Huiru,Chen, Xiangrong,et al. Fabrication of Antiswelling Loose Nanofiltration Membranes via a "Selective-Etching-Induced Reinforcing" Strategy for Bioseparation[J]. ACS APPLIED MATERIALS & INTERFACES,2021,13(16):19312-19323.
APA Guo, Shiwei,Zhang, Huiru,Chen, Xiangrong,Feng, Shichao,Wan, Yinhua,&Luo, Jianquan.(2021).Fabrication of Antiswelling Loose Nanofiltration Membranes via a "Selective-Etching-Induced Reinforcing" Strategy for Bioseparation.ACS APPLIED MATERIALS & INTERFACES,13(16),19312-19323.
MLA Guo, Shiwei,et al."Fabrication of Antiswelling Loose Nanofiltration Membranes via a "Selective-Etching-Induced Reinforcing" Strategy for Bioseparation".ACS APPLIED MATERIALS & INTERFACES 13.16(2021):19312-19323.
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