Fish Scale-Inspired β-Cyclodextrin Cross-Linked Polyacrylamide Hydrogels for Oil–Water Separation

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

ACS Applied Materials & Interfaces Pub Date : 2025-03-05 DOI:10.1021/acsami.4c22362

Qi Zhang, Wenjing Chen, Jiajun Zuo, Guanglei Liu, Xiaoqian Han, Nong Wang

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Abstract

Cyclodextrins (CDs), a low-polysaccharide class, possess a hydrophilic outer surface due to their hydroxyl groups, which can be functionalized for various applications. In this study, the hydroxyl groups on β-cyclodextrin were functionalized with acrylates (CD-A) and were subsequently used as a cross-linker in the copolymerization with acrylamide to form a polyacrylamide-cyclodextrin hydrogel (PAC). Compared with polyacrylamide (PAM), PAC exhibited enhanced water absorption abilities and mechanical strength. Inspired by fish scales’ surface structural properties, microporous stainless steel meshes were coated with PAC, and we could demonstrate an excellent oil–water separation due to excellent superhydrophilicity and underwater superoleophobicity. The mesh effectively separated various oil–water mixtures by using gravity filtration, achieving separation efficiencies of over 99%. Repeated use with different oil types confirmed the durability and effectiveness of the hydrogel-coated mesh for practical applications in oil–water separation.

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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.