Oil-Resistant Underoil Superhydrophilic Metallic Foams for Lampblack Prefiltration

IF 8.3 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Materials & Interfaces Pub Date : 2024-10-12 DOI:10.1021/acsami.4c13153

Junxu Chen, Weilin Deng, Wei Wang, Jing Liu, Mengyang Zhang, Xingyu Liu, Yihao Hu, Pengfei Zhang, Xinquan Yu, Youfa Zhang

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Abstract

Superwetting/repelling coatings have been utilized to address the issue of oil contamination on lampblack prefiltration metallic foam by both academia and industry. Nevertheless, the widely adopted superamphiphobic coatings are currently costly and suffer from poor wear resistance. In this study, we propose an oil-resistant underoil superhydrophilic (LSH) coating by a dip-coating method. The subsequent heating process at 200 °C for 5 min strengthens the designed coating based on lithium polysilicate cross-linking reinforcement. The LSH coating with a minimal water contact angle up to 3.4° under soybean oil can spontaneously achieve oil desorption within 7 s under water. Moreover, the coating retains its superhydrophilicity after enduring 900 friction cycles under a 500 g load or being immersed in 50 °C soapy water for 48 h. Hence, the LSH coating with great durability on metallic foam for lampblack prefiltration resulted in a 9.3% decrease in the oil absorption weight ratio after a 17-day cooking test. This work underscores the potential application of the LSH coating in lampblack prefiltration components, presenting promising technological advancements in self-cleaning for the catering industry.

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用于灯黑预过滤的耐油油底超亲水金属泡沫

学术界和工业界一直在利用超润湿/憎油性涂层来解决黑灯预过滤金属泡沫上的油污染问题。然而，目前广泛采用的超疏水涂层成本高、耐磨性差。在本研究中，我们提出了一种采用浸涂法的耐油油底超亲水（LSH）涂层。随后在 200 °C 的温度下加热 5 分钟，可在聚硅酸锂交联增强的基础上强化所设计的涂层。这种 LSH 涂层在豆油下的最小水接触角可达 3.4°，在水下 7 秒内就能自发实现油的解吸。此外，该涂层在承受 500 克载荷的 900 次摩擦循环或在 50 °C的肥皂水中浸泡 48 小时后仍能保持其超亲水性。这项研究强调了 LSH 涂层在灯罩预过滤组件中的潜在应用，为餐饮业的自清洁技术进步带来了希望。

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来源期刊

ACS Applied Materials & Interfaces 工程技术-材料科学：综合

CiteScore

16.00

自引率

6.30%

发文量

4978

审稿时长

1.8 months

期刊介绍： ACS Applied Materials & Interfaces is a leading interdisciplinary journal that brings together chemists, engineers, physicists, and biologists to explore the development and utilization of newly-discovered materials and interfacial processes for specific applications. Our journal has experienced remarkable growth since its establishment in 2009, both in terms of the number of articles published and the impact of the research showcased. We are proud to foster a truly global community, with the majority of published articles originating from outside the United States, reflecting the rapid growth of applied research worldwide.