Cactus-inspired bio-derived superhydrophobic anti-corrosive hybrid coating: A sustainable fluorine/silane-free approach for multifunctional oil-water separation

IF 7.3 2区材料科学 Q1 CHEMISTRY, APPLIED Progress in Organic Coatings Pub Date : 2025-02-16 DOI:10.1016/j.porgcoat.2025.109144

Surya Kanta Ghadei , Jyoti Kanungo , Sourav Ganguly , Kamatchi Jothiramalingam Sankaran , Ramasamy Sakthivel

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Abstract

The rapid rise in demand for environmentally friendly technologies, and the shift toward a sustainable, fluorine/silane-free approach is critical for driving groundbreaking advancements in environmental remediation solutions. This study reports the synthesis and comprehensive characterization of a multifunctional foam featuring exceptional superhydrophobic and superoleophilic properties, tailored for advanced anti-corrosion, self-cleaning, and oil-water separation applications. Utilizing chicken eggshell waste, we developed a sustainable, fluorine/silane-free coating by first synthesizing functionalized calcium carbonate (FCC) with a cactus-like micro/nanostructure. This FCC exhibited a core-shell structure with a crystalline core and an amorphous calcium carbonate shell. We then fabricated the r-AC-FCC-coated foams using dip-coating and reduction techniques. The r-AC-FCC coating demonstrated outstanding anti-corrosion performance, particularly in saline conditions, with an inhibition efficiency surpassing 80 % and significant corrosion rate reductions in acidic and alkaline environments. The foam achieved a remarkable oil-water separation efficiency of 97 %, showcasing an impressive oil adsorption capacity of 12-65 g/g. Enhanced mechanical properties of r-AC-FCC coated foam were noted, with compressive strength and modulus of elasticity improved by 69 % and 119 %, respectively. The foam also exhibited superior self-cleaning performance and maintained high efficacy over multiple reuse cycles. Biocompatibility tests indicated effective oily wastewater treatment, significantly improving mung bean germination rates. This innovative foam leverages the optimal synergy between surface roughness and energy, underpinned by FCC's hierarchical nanostructures and robust r-AC anchoring, offering a powerful, sustainable solution for environmental remediation and material protection.

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受仙人掌启发的生物衍生超疏水防腐混合涂层：一种可持续的无氟/无硅烷多功能油水分离方法

对环境友好型技术的需求迅速增加，以及向可持续、无氟/无硅烷方法的转变，对于推动环境修复解决方案取得突破性进展至关重要。本研究报告了一种多功能泡沫的合成和综合表征，该泡沫具有特殊的超疏水和超亲油性能，可用于先进的防腐、自清洁和油水分离应用。利用鸡蛋壳废弃物，首次合成了具有仙人掌状微纳米结构的功能化碳酸钙（FCC），开发了一种可持续的无氟硅烷涂层。该FCC具有结晶核和无定形碳酸钙壳的核壳结构。然后，我们使用浸涂和还原技术制备了r- ac - fcc涂层泡沫。r-AC-FCC涂层表现出出色的防腐性能，特别是在盐水环境下，其缓蚀效率超过80%，在酸性和碱性环境下的腐蚀速率显著降低。泡沫的油水分离效率达到97%，吸附油量达到12-65 g/g。r-AC-FCC包覆泡沫的力学性能得到了显著提高，抗压强度和弹性模量分别提高了69%和119%。泡沫也表现出优异的自清洁性能，并在多次重复使用中保持高效率。生物相容性试验表明，含油废水处理效果显著，绿豆发芽率显著提高。这种创新的泡沫利用了表面粗糙度和能量之间的最佳协同作用，以FCC的分层纳米结构和强大的r-AC锚定为基础，为环境修复和材料保护提供了强大的、可持续的解决方案。

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来源期刊

Progress in Organic Coatings 工程技术-材料科学：膜

CiteScore

11.40

自引率

15.20%

发文量

577

审稿时长

48 days

期刊介绍： The aim of this international journal is to analyse and publicise the progress and current state of knowledge in the field of organic coatings and related materials. The Editors and the Editorial Board members will solicit both review and research papers from academic and industrial scientists who are actively engaged in research and development or, in the case of review papers, have extensive experience in the subject to be reviewed. Unsolicited manuscripts will be accepted if they meet the journal''s requirements. The journal publishes papers dealing with such subjects as: • Chemical, physical and technological properties of organic coatings and related materials • Problems and methods of preparation, manufacture and application of these materials • Performance, testing and analysis.