A Durable Fluorine‐Free MOF‐Based Self‐Cleaning Superhydrophobic Cotton Fabric for Oil‐Water Separation

Abstract

It is challenging to fabricate durable and fluorine‐free superhydrophobic surfaces through simple procedures. In this study, a novel fabrication method for constructing robust, wearable, and fluorine‐free superhydrophobic surfaces on cotton textiles has been achieved via in situ growth of zeolitic imidazolate framework‐8 (ZIF‐8) layers followed by polydimethylsiloxane (PDMS) modification. The roughness created by the sheet‐like structure is optimized by tuning the mole ratio between 2‐methylimidazole and zinc nitrate during the in situ growth, while polydopamine (PDA) is introduced to improve the durability and stability. The resultant PDA/ZIF‐8/PDMS@cotton fabric exhibits a maximum water contact angle of 156.4° and a low sliding hysteresis angle of 3.8°. The as‐prepared superhydrophobic fabric also presents excellent durability and stability, and outstanding resistance against continuous sunlight exposure and various chemical reagents. In addition, the superhydrophobic surface possesses excellent self‐cleaning and anti‐fouling performance, as well as high separation efficiency >97% and reusability when serving as a filter during the oil‐water separation. The proposed approach and prepared superhydrophobic fabric strongly demonstrate the potential applications in oil‐water separation with a prolonged life cycle.

pH‐responsive resveratrol‐loaded ZIF‐8 nanoparticles modified with tannic acid for promoting colon cancer cell apoptosis

“…This enhanced cytotoxicity can be attributed to the improved cellular delivery capability of Res@ZIF‐8/TA NPs, leading to increased anticancer efficiency of Res. Previous studies have reported that surface modification of ZIF‐8 NPs significantly enhances their biocompatibility with normal cells, facilitating effective drug encapsulation and delivery, thereby greatly improving drug efficacy 26,27 . These findings are consistent with results obtained by Zheng et al 28 and Shearier et al 29 where coating effectively improved the biocompatibility of nanoparticles with normal cells and reduced side effects and toxicity.…”

Thin multifunctional coatings for textiles based on the layer-by-layer application of polyaromatic hybrid nanoparticles

“…9,10 These concerns have led researchers to explore alternative approaches that prioritize sustainability and minimize adverse environmental impacts. 11 Biobased materials have been investigated as more sustainable solutions for post-treatment in textile finishing. Recently, biobased polyphenolic materials have gained significant attention in the textile industry.…”

A dual-functional superhydrophobic PDMS@ZnO@MS sponge for highly efficient oil–water separation and photocatalytic degradation

“…[12][13][14] However, the design and development of functionalized adsorbent materials used in oil-water separation is still a challenge. Various functional materials such as cellulose, 15 graphite, 16 cotton fabrics 17 and sponge 18 have been used widely to separate oil from water. Among them, the three-dimensional (3D) porous sponge has attracted significant attention in the field of oil/water separation owing to its welldeveloped pore structure and large surface area.…”