{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,23]],"date-time":"2026-08-23T17:48:53Z","timestamp":1787507333483,"version":"build-2736575974"},"reference-count":46,"publisher":"MDPI AG","issue":"23","license":[{"start":{"date-parts":[[2023,12,2]],"date-time":"2023-12-02T00:00:00Z","timestamp":1701475200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Nature Science Foundation of China","award":["22074029"],"award-info":[{"award-number":["22074029"]}]},{"name":"National Nature Science Foundation of China","award":["21ZD005"],"award-info":[{"award-number":["21ZD005"]}]},{"name":"National Nature Science Foundation of China","award":["C20150020"],"award-info":[{"award-number":["C20150020"]}]},{"name":"Major Project of Science and Technology of Xinxiang City","award":["22074029"],"award-info":[{"award-number":["22074029"]}]},{"name":"Major Project of Science and Technology of Xinxiang City","award":["21ZD005"],"award-info":[{"award-number":["21ZD005"]}]},{"name":"Major Project of Science and Technology of Xinxiang City","award":["C20150020"],"award-info":[{"award-number":["C20150020"]}]},{"name":"Start-up Project for High-Level Talents in HUAS","award":["22074029"],"award-info":[{"award-number":["22074029"]}]},{"name":"Start-up Project for High-Level Talents in HUAS","award":["21ZD005"],"award-info":[{"award-number":["21ZD005"]}]},{"name":"Start-up Project for High-Level Talents in HUAS","award":["C20150020"],"award-info":[{"award-number":["C20150020"]}]},{"name":"Scientific Innovation Team in Henan Province","award":["22074029"],"award-info":[{"award-number":["22074029"]}]},{"name":"Scientific Innovation Team in Henan Province","award":["21ZD005"],"award-info":[{"award-number":["21ZD005"]}]},{"name":"Scientific Innovation Team in Henan Province","award":["C20150020"],"award-info":[{"award-number":["C20150020"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>Although membrane separation technology has been widely used in the treatment of oily wastewater, the complexity and high cost of the membrane preparation, as well as its poor stability, limit its further development. In this study, via the vacuum-assisted suction filtration method, polydopamine (PDA)-coated TiO2 nanoparticles were tightly attached and embedded on both sides of laboratory filter paper (FP). The resultant FP possessed the typical wettability of high hydrophilicity in the air with the water contact angle (WCA) of 28\u00b0, superoleophilicity with the oil contact angle (OCA) close to 0\u00b0, underwater superoleophobicity with the underwater OCA greater than 150\u00b0, and superhydrophobicity under the water with the underoil WCA over 150\u00b0 for five kinds of organic solvents (carbon tetrachloride, toluene, n-hexane, n-octane, and iso-octane). The separation efficiency of immiscible oil\/water, oil-in-water, and water-in-oil emulsions using the modified FP is higher than 99%. After 17 cycles of emulsion separation, a high separation efficiency of 99% was still maintained for the FP, along with good chemical and mechanical stability. In addition, successful separation and purification were also realized for the oil-in-water emulsion that contained the methylene blue (MB) dye, along with the complete degradation of MB in an aqueous solution under UV irradiation.<\/jats:p>","DOI":"10.3390\/molecules28237903","type":"journal-article","created":{"date-parts":[[2023,12,2]],"date-time":"2023-12-02T13:45:49Z","timestamp":1701524749000},"page":"7903","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Versatile Application of TiO2@PDA Modified Filter Paper for Oily Wastewater Treatment"],"prefix":"10.3390","volume":"28","author":[{"given":"Chang-Hua","family":"Zhao","sequence":"first","affiliation":[{"name":"College of Chemistry, Zhengzhou University, Zhengzhou 450001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yu-Ping","family":"Zhang","sequence":"additional","affiliation":[{"name":"College of Chemistry and Materials Engineering, Hunan University of Arts and Science, Changde 415000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Li","family":"Wan","sequence":"additional","affiliation":[{"name":"College of Chemistry and Materials Engineering, Hunan University of Arts and Science, Changde 415000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xin-Xin","family":"Chen","sequence":"additional","affiliation":[{"name":"College of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang 453003, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pei","family":"Yuan","sequence":"additional","affiliation":[{"name":"College of Chemistry and Materials Engineering, Hunan University of Arts and Science, Changde 415000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ling-Bo","family":"Qu","sequence":"additional","affiliation":[{"name":"College of Chemistry, Zhengzhou University, Zhengzhou 450001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,12,2]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"146094","DOI":"10.1016\/j.cej.2023.146094","article-title":"Liquid-assisted strategy for dual-purpose oil-water separation with super-omniphobic mesh","volume":"475","author":"Pan","year":"2023","journal-title":"Chem. 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