Self-cleaning SiO2–TiO2 ceramic membrane for enhanced oil–water separation

IF 2.7 4区材料科学 Q3 CHEMISTRY, PHYSICAL

Surface Innovations Pub Date : 2024-01-11 DOI:10.1680/jsuin.23.00070

Yalong Liu, Binjie Xin, Md All Amin Newton, Lifeng Li, Di Gao

引用次数: 0

Abstract

An efficient and practical method is proposed for the separation of oil–water mixtures and emulsions in sustainable water ecosystems, facilitating energy recovery. The construction of flexible ceramic fiber membranes with high throughput and self-cleaning capabilities has proven effective but challenging. This study reports a novel approach combining the sol–gel and electrospinning techniques to synthesize flexible silicon dioxide (SiO2)–titanium dioxide (TiO2) nanofiber membranes (STNFMs). These membranes possess nanoscale rough structures, granting them superhydrophilicity and underwater superoleophobicity (155°). Exploiting the photocatalytic properties of titanium dioxide, STNFMs-4 not only demonstrates excellent separation performance but also exhibits remarkable self-cleaning abilities. After 2 h of ultraviolet light irradiation, the membrane flux returns to its original level. STNFMs provide a promising solution for highly efficient separation of oil–water mixtures and emulsions, with the potential to play a significant role in water treatment and resource recovery.

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用于强化油水分离的 SiO2-TiO2 自清洁陶瓷膜

本文提出了一种高效实用的方法，用于分离可持续水生态系统中的油水混合物和乳化液，促进能源回收。事实证明，构建具有高通量和自清洁能力的柔性陶瓷纤维膜是有效的，但也是具有挑战性的。本研究报告了一种结合溶胶-凝胶和电纺丝技术的新方法，用于合成柔性二氧化硅（SiO2）-二氧化钛（TiO2）纳米纤维膜（STNFMs）。这些膜具有纳米级粗糙结构，使其具有超亲水性和水下超疏水性（155°）。利用二氧化钛的光催化特性，STNFMs-4 不仅具有出色的分离性能，还表现出卓越的自清洁能力。在紫外线照射 2 小时后，膜通量恢复到原来的水平。STNFMs 为高效分离油水混合物和乳状液提供了一种前景广阔的解决方案，有望在水处理和资源回收方面发挥重要作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Surface Innovations CHEMISTRY, PHYSICALMATERIALS SCIENCE, COAT-MATERIALS SCIENCE, COATINGS & FILMS

CiteScore

5.80

自引率

22.90%

发文量

期刊介绍： The material innovations on surfaces, combined with understanding and manipulation of physics and chemistry of functional surfaces and coatings, have exploded in the past decade at an incredibly rapid pace. Superhydrophobicity, superhydrophlicity, self-cleaning, self-healing, anti-fouling, anti-bacterial, etc., have become important fundamental topics of surface science research community driven by curiosity of physics, chemistry, and biology of interaction phenomenon at surfaces and their enormous potential in practical applications. Materials having controlled-functionality surfaces and coatings are important to the manufacturing of new products for environmental control, liquid manipulation, nanotechnological advances, biomedical engineering, pharmacy, biotechnology, and many others, and are part of the most promising technological innovations of the twenty-first century.