{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T22:56:15Z","timestamp":1791327375458,"version":"4.3.1"},"reference-count":33,"publisher":"MDPI AG","issue":"5","license":[{"start":{"date-parts":[[2025,5,16]],"date-time":"2025-05-16T00:00:00Z","timestamp":1747353600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Anhui International Joint Research Center for Nano Carbon-based Materials and Environmental Health","award":["NCMEH2024Y05"],"award-info":[{"award-number":["NCMEH2024Y05"]}]},{"name":"Anhui International Joint Research Center for Nano Carbon-based Materials and Environmental Health","award":["S202410361024"],"award-info":[{"award-number":["S202410361024"]}]},{"name":"Innovation Training Program for College Students","award":["NCMEH2024Y05"],"award-info":[{"award-number":["NCMEH2024Y05"]}]},{"name":"Innovation Training Program for College Students","award":["S202410361024"],"award-info":[{"award-number":["S202410361024"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Membranes"],"abstract":"<jats:p>The simple preparation of superhydrophilic membranes with good stability is of great significance for efficient oil\u2013water separation. In this work, a polyvinylidene fluoride (PVDF) membrane modified with tannic acid (TA) and pectin (PT) was developed through immersion in TA\/PT solutions, facilitating the formation of complexes via co-deposition. The optimized PVDF@TA\/PT3 membrane exhibited superhydrophilicity\/superoleophobicity. The membrane achieved remarkable separation efficiencies exceeding 98.3% and fluxes ranging from 71.3 to 156.3 L m\u22122 h\u22121 for various oil\u2013water emulsions under gravity-driven conditions. Notably, the membrane maintained exceptional durability through 10 separation cycles, retaining about 98% efficiency while exhibiting strong antifouling properties. Excellent separation performance coupled with facile fabrication protocol and chemical stability of the membrane, position the PVDF@TA\/PT membrane as a technologically viable candidate for wastewater purification.<\/jats:p>","DOI":"10.3390\/membranes15050155","type":"journal-article","created":{"date-parts":[[2025,5,19]],"date-time":"2025-05-19T03:51:03Z","timestamp":1747626663000},"page":"155","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Preparation of Tannic Acid-Pectin Coated PVDF Membrane for High-Efficiency Separation of Oil and Water Emulsions"],"prefix":"10.3390","volume":"15","author":[{"given":"Liangku","family":"Zhai","sequence":"first","affiliation":[{"name":"School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiuyun","family":"Cui","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China"},{"name":"Anhui International Joint Research Center for Nano Carbon-Based Materials and Environmental Health, Anhui University of Science and Technology, Huainan 232001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lei","family":"Lu","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hailong","family":"Wang","sequence":"additional","affiliation":[{"name":"Hangmo New Materials Group Co., Ltd., Huzhou 313300, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Can","family":"Wei","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jirong","family":"Luo","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8429-9905","authenticated-orcid":false,"given":"Atian","family":"Xie","sequence":"additional","affiliation":[{"name":"School of Materials Science and Engineering, Anhui University of Science and Technology, Huainan 232001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,5,16]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1254","DOI":"10.1080\/10643389.2022.2131340","article-title":"Emulsion system, demulsification and membrane technology in oil\u2013water emulsion separation: A comprehensive review","volume":"53","author":"Deng","year":"2023","journal-title":"Crit. Rev. Environ. Sci. Technol."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"122380","DOI":"10.1016\/j.memsci.2023.122380","article-title":"Low-pressure driving Co3O4\/PAN nanofiber membrane with peroxymonosulfate activation self-cleaning for efficient wastewater purification","volume":"693","author":"Liang","year":"2024","journal-title":"J. Membr. Sci."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"591","DOI":"10.1007\/s11157-018-9477-y","article-title":"Dissolved air flotation combined to biosurfactants: A clean and efficient alternative to treat industrial oily water","volume":"17","author":"Luna","year":"2018","journal-title":"Rev. Environ. Sci. Biotechnol."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"107532","DOI":"10.1016\/j.jece.2022.107532","article-title":"Membrane fouling and fouling mitigation in oil\u2013water separation: A review","volume":"10","author":"Sutrisna","year":"2022","journal-title":"Environ. Chem. Eng."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"34999","DOI":"10.1021\/acsami.0c09059","article-title":"Biomimetic durable multifunctional self-cleaning nanofibrous membrane with outstanding oil\/water separation, photodegradation of organic contaminants, and antibacterial performances","volume":"12","author":"Ma","year":"2020","journal-title":"ACS Appl. Mater. Interfaces"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"120093","DOI":"10.1016\/j.memsci.2021.120093","article-title":"Robust antifouling NH2-MIL-88B coated quartz fibrous membrane for efficient gravity-driven oil-water emulsion separation","volume":"644","author":"Xie","year":"2022","journal-title":"J. Membr. Sci."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"347","DOI":"10.1016\/j.watres.2019.03.021","article-title":"Membranebased separation for oily wastewater: A practical perspective","volume":"156","author":"Tanudjaja","year":"2019","journal-title":"Water Res."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"138528","DOI":"10.1016\/j.chemosphere.2023.138528","article-title":"Recent developments in the application of membrane separation technology and its challenges in oil-water separation: A review","volume":"327","author":"Li","year":"2023","journal-title":"Chemosphere"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"118528","DOI":"10.1016\/j.seppur.2021.118528","article-title":"Fabrication of crosslinking modified PVDF\/GO membrane with acid, alkali and salt resistance for efficient oil-water emulsion separation","volume":"265","author":"Cui","year":"2021","journal-title":"Sep. Purif. Technol."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"197","DOI":"10.1016\/j.desal.2014.11.023","article-title":"Membrane technology enhancement in oil\u2013water separation. A review","volume":"357","author":"Padaki","year":"2015","journal-title":"Desalination"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"102391","DOI":"10.1016\/j.eti.2022.102391","article-title":"Hydrophobic and oleophilic amine-functionalised graphene\/polyethylene nanocomposite for oil\u2013water separation","volume":"27","author":"Olabintan","year":"2022","journal-title":"Environ. Technol. Innov."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"130248","DOI":"10.1016\/j.seppur.2024.130248","article-title":"Sm-MOF decorated cotton for efficient on-demand oil-water separation and organic pollutants removal","volume":"358","author":"Meng","year":"2025","journal-title":"Sep. Purif. Technol."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"47018","DOI":"10.1021\/acsami.0c13508","article-title":"Simple amphoteric charge strategy to reinforce superhydrophilic polyvinylidene fluoride membrane for highly efficient separation of various surfactant-stabilized oil-in-water emulsions","volume":"12","author":"Xiong","year":"2020","journal-title":"ACS Appl. Mater. Interfaces"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"130138","DOI":"10.1016\/j.seppur.2024.130138","article-title":"Fabrication of modified PVDF membranes with PAA network polymer for highly efficient oil\/water emulsion separation","volume":"357","author":"Zhao","year":"2025","journal-title":"Sep. Purif. Technol."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"107257","DOI":"10.1016\/j.jece.2022.107257","article-title":"A review on oil\/water emulsion separation membrane material","volume":"10","author":"Zhang","year":"2022","journal-title":"J. Environ. Chem. Eng."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"348","DOI":"10.1016\/j.seppur.2017.10.027","article-title":"Ultrahigh flux of polydopamine-coated PVDF membranes quenched in air via thermally induced phase separation for oil\/water emulsion separation","volume":"192","author":"Zuo","year":"2018","journal-title":"Sep. Purif. Technol."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"641","DOI":"10.1016\/j.seppur.2018.10.014","article-title":"Modification of hydrophobic commercial PVDF microfiltration membranes into superhydrophilic membranes by the mussel-inspired method with dopamine and polyethyleneimine","volume":"212","author":"Zin","year":"2019","journal-title":"Sep. Purif. Technol."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"eadh8195","DOI":"10.1126\/sciadv.adh8195","article-title":"Biodegradable electrospinning superhydrophilic nanofiber membranes for ultrafast oil-water separation","volume":"9","author":"Cheng","year":"2023","journal-title":"Sci. Adv."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"127802","DOI":"10.1016\/j.seppur.2024.127802","article-title":"Phytic acid metal complex as precursor for fabrication of superhydrophilic membrane with photo-Fenton self-cleaning property for microalgae dewatering and oil\/water emulsion separation","volume":"350","author":"Zeng","year":"2024","journal-title":"Sep. Purif. Technol."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"129246","DOI":"10.1016\/j.seppur.2024.129246","article-title":"Regulating coordinatively unsaturated Co active sites in TA@ ZIF-L (Co) via tannic acid for efficient photoelectrochemical water oxidation","volume":"354","author":"Huang","year":"2025","journal-title":"Sep. Purif. Technol."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"154","DOI":"10.1126\/science.1237265","article-title":"One-step assembly of coordination complexes for versatile film and particle engineering","volume":"341","author":"Ejima","year":"2013","journal-title":"Science"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"116535","DOI":"10.1016\/j.desal.2023.116535","article-title":"Bio-based tannic acid as a raw material for membrane surface modification","volume":"555","author":"Zhou","year":"2023","journal-title":"Desalination"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"165","DOI":"10.1016\/j.progpolymsci.2018.08.005","article-title":"Natural polyphenols as versatile platforms for material engineering and surface functionalization","volume":"87","author":"Xu","year":"2018","journal-title":"Prog. Polym. Sci."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"107992","DOI":"10.1016\/j.jece.2022.107992","article-title":"Gelatin-tannic acid coating for high flux oil-water separation","volume":"10","author":"Zuo","year":"2022","journal-title":"J. Environ. Chem. Eng."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"13959","DOI":"10.1039\/C8TA03794A","article-title":"Tannic acid encountering ovalbumin: A green and mild strategy for superhydrophilic and underwater superoleophobic modification of various hydrophobic membranes for oil\/water separation","volume":"6","author":"Wang","year":"2018","journal-title":"J. Mater. Chem. A"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"120873","DOI":"10.1016\/j.memsci.2022.120873","article-title":"Tannic acid (TA)-based coating modified membrane enhanced by successive inkjet printing of Fe3+ and sodium periodate (SP) for efficient oil-water separation","volume":"660","author":"Xie","year":"2022","journal-title":"J. Membr. Sci."},{"key":"ref_27","doi-asserted-by":"crossref","unstructured":"Yue, Y., Wang, B., Xi, W., Liu, X., Tang, S., Tan, X., Li, G., Huang, L., Liu, Y., and Bai, J. (2023). Modification methods, biological activities and applications of pectin: A review. Int. J. Biol. Macromol., 253.","DOI":"10.1016\/j.ijbiomac.2023.127523"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"5405","DOI":"10.1039\/C9GC02454A","article-title":"Highly transparent, healable, and durable anti-fogging coating by combining hydrophilic pectin and tannic acid with poly (ethylene terephthalate)","volume":"21","author":"Zhang","year":"2019","journal-title":"Green Chem."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"107594","DOI":"10.1016\/j.foodhyd.2022.107594","article-title":"Effect of different cation in situ cross-linking on the properties of pectin-thymol active film","volume":"128","author":"Zhang","year":"2022","journal-title":"Food Hydrocoll."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"9341","DOI":"10.1021\/acs.est.8b02425","article-title":"Tannic acid\/Fe3+ nanoscaffold for interfacial polymerization: Toward enhanced nanofiltration performance","volume":"52","author":"Yang","year":"2018","journal-title":"Environ. Sci. Technol."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"115657","DOI":"10.1016\/j.seppur.2019.05.099","article-title":"Tannin-inspired robust fabrication of superwettability membranes for highly efficient separation of oil-in-water emulsions and immiscible oil\/water mixtures","volume":"227","author":"Ong","year":"2019","journal-title":"Sep. Purif. Technol."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"120101","DOI":"10.1016\/j.memsci.2021.120101","article-title":"Fabrication and modification of PVDF\/PSF hollow-fiber membranes for ginseng extract and saline water separations via direct contact membrane distillation","volume":"644","author":"Zou","year":"2022","journal-title":"J. Membr. Sci."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"8491","DOI":"10.1039\/C9TA00521H","article-title":"Photo-Fenton self-cleaning membranes with robust flux recovery for an efficient oil\/water emulsion separation","volume":"7","author":"Xie","year":"2019","journal-title":"J. Mater. Chem. A"}],"container-title":["Membranes"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2077-0375\/15\/5\/155\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,9]],"date-time":"2025-10-09T17:34:16Z","timestamp":1760031256000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2077-0375\/15\/5\/155"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,5,16]]},"references-count":33,"journal-issue":{"issue":"5","published-online":{"date-parts":[[2025,5]]}},"alternative-id":["membranes15050155"],"URL":"https:\/\/doi.org\/10.3390\/membranes15050155","relation":{},"ISSN":["2077-0375"],"issn-type":[{"value":"2077-0375","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,5,16]]}}}