Superhydrophobic DTMS/rGO-nanocomposites modified polyurethane sponge for efficient oil–water separation

IF 2.4 4区材料科学 Q3 MATERIALS SCIENCE, COATINGS & FILMS

Surface Engineering Pub Date : 2023-03-04 DOI:10.1080/02670844.2023.2217599

Ji Li, Junfeng Lu, Tian C. Zhang, Shaojun Yuan

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引用次数: 0

Abstract

ABSTRACT Dodecyltrimethoxysilane (DTMS)-modified reduced graphene oxide (rGO) nanocomposites were incorporated into polyurethane (PU) sponges by a combination of dip-coating and thermal curing reduction reaction to obtain a novel superhydrophobic DTMS-rGO-PU sponge for effective oil/water separation. The reaction conditions, such as the dip-coating solution concentration, the thermal curing reduction temperature, and the reaction time were demonstrated to be key factors in forming hierarchical DTMS-rGO nanocomposites, which significantly affected the surface wettability of the PU sponge. The resulting DTMS-rGO-PU sponge with a static water contact angle (WCA) of 152.2° displayed superior superhydrophobicity, and achieved an oil–water separation efficiency of 99.89% for various oil/water mixtures. This superhydrophobic sponge also showed minimal deterioration in its high oil adsorption capacity after 100 recycled adsorption operations. Furthermore, the as-prepared DTMS-rGO-PU sponge was proven to be physically and chemically stable and durable in harsh environmental conditions, suggesting its potential for industrial applications in oil spillage management.

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超疏水DTMS/ rgo纳米复合材料改性聚氨酯海绵高效油水分离

采用浸涂和热固化还原反应相结合的方法，将十二烷基三甲氧基硅烷(DTMS)修饰的还原氧化石墨烯(rGO)纳米复合材料掺入聚氨酯(PU)海绵中，制备了一种新型的超疏水性DTMS-rGO-PU海绵，用于有效的油水分离。结果表明，浸涂溶液浓度、热固化还原温度和反应时间是形成层次化DTMS-rGO纳米复合材料的关键因素，对PU海绵的表面润湿性有显著影响。所得DTMS-rGO-PU海绵的静水接触角(WCA)为152.2°，表现出优异的超疏水性，对各种油水混合物的油水分离效率达到99.89%。经过100次循环吸附操作后，超疏水海绵的高吸油能力也表现出最小的下降。此外，制备的DTMS-rGO-PU海绵在恶劣环境条件下具有物理化学稳定性和耐用性，表明其在石油泄漏管理方面的工业应用潜力。

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来源期刊

Surface Engineering 工程技术-材料科学：膜

CiteScore

5.60

自引率

14.30%

发文量

审稿时长

2.3 months

期刊介绍： Surface Engineering provides a forum for the publication of refereed material on both the theory and practice of this important enabling technology, embracing science, technology and engineering. Coverage includes design, surface modification technologies and process control, and the characterisation and properties of the final system or component, including quality control and non-destructive examination.