Development of a superhydrophobic and superoleophilic halloysite nanotube/phenyltriethoxysilane-coated melamine sponge sorbent material with high performance in supercritical CO2 atmosphere for the selective and effective oil spill cleanup and oil-water separation.

IF 8 2区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES
Journal of Environmental Management Pub Date : 2025-01-01 Epub Date: 2024-12-17 DOI:10.1016/j.jenvman.2024.123715
Osman Duman, Candan Cengiz, Ceren Özcan Diker, Uğur Cengiz, Süleyman Mert Güreşir, Sibel Tunç
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引用次数: 0

Abstract

In this study, activated halloysite nanotube (HNT) and phenyltriethoxysilane (PTES) were utilized for the first time to fabricate modified HNT materials and coat them onto melamine sponge (MS) substrate in the supercritical carbon dioxide (scCO2) atmosphere. The successful coating of MS substrate was confirmed using SEM, EDS, XPS, and contact angle measurements. The drainage technique applied in the CO2 medium achieved the uniform coating of both the inner and outer surfaces of the MS. Water and oil contact angles of the fabricated sorbent material (MS-PTES) were measured as 167.1° and 0°, respectively. MS-PTES sorbent having superhydrophobic and superoleophilic properties demonstrated sorption capacities ranging from 47.6 g/g to 132.2 g/g for 13 different pollutants, including various petroleum products, oils, and organic solvents. Moreover, the MS-PTES sorbent material showed outstanding separation efficiency (99.99%) for the diesel-water mixture using a continuous separation process. It also displayed high selectivity for oil and organic solvent pollutants under acidic, saline, and alkaline conditions, along with excellent reusability, chemical stability, robustness, and mechanical flexibility. MS sorbent material coated with HNT-modified PTES nanoparticles, produced in the scCO2 atmosphere using the drainage technique, represents a promising solution for the removal of petroleum derivatives, oils, and organic solvents from water.

超临界CO2环境下超疏亲油性高岭土纳米管/苯三乙氧基硅烷包覆三聚氰胺海绵吸附剂的研制及其在石油泄漏和油水分离中的应用
本研究首次利用活性高岭土纳米管(HNT)和苯基三乙基氧基硅烷(PTES)制备改性HNT材料,并在超临界二氧化碳(scCO2)气氛下将其涂覆在三聚氰胺海绵(MS)基体上。通过SEM, EDS, XPS和接触角测量,证实了MS基板的成功涂层。在CO2介质中采用排水技术,制备的吸附材料(MS-PTES)的水接触角和油接触角分别为167.1°和0°。MS-PTES吸附剂具有超疏水和超亲油特性,对13种不同的污染物,包括各种石油产品、油类和有机溶剂的吸附量在47.6 g/g至132.2 g/g之间。此外,MS-PTES吸附材料在连续分离过程中对柴油-水混合物的分离效率达到99.99%。在酸性、盐水和碱性条件下,它对油和有机溶剂污染物也有很高的选择性,同时具有优异的可重复使用性、化学稳定性、鲁棒性和机械灵活性。在scCO2气氛中使用排水技术生产的涂有hnt修饰PTES纳米颗粒的MS吸附剂材料,代表了从水中去除石油衍生物,油和有机溶剂的有前途的解决方案。
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来源期刊
Journal of Environmental Management
Journal of Environmental Management 环境科学-环境科学
CiteScore
13.70
自引率
5.70%
发文量
2477
审稿时长
84 days
期刊介绍: The Journal of Environmental Management is a journal for the publication of peer reviewed, original research for all aspects of management and the managed use of the environment, both natural and man-made.Critical review articles are also welcome; submission of these is strongly encouraged.
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