CuWO4/Ti3C2 MXene Heterostructure: Fabrication and Immobilization into a Photocatalytic PVDF Membrane

IF 2.2 4区工程技术 Q1 MATERIALS SCIENCE, TEXTILES

Fibers and Polymers Pub Date : 2025-03-23 DOI:10.1007/s12221-025-00911-6

Amirali Mostafavi Mousavi, Ali Asghar Sabbagh Alvani, Reza Salimi

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Abstract

Pollution of water caused by organic contaminants is a significant global environmental concern that has paid increasing attention. Polymeric photocatalytic membranes (PPMs) are attracting significant attention for their role in water purification, with benefits of both photocatalysis and membrane separation. In this study, we synthesized a hybrid CuWO₄/Ti₃C₂ MXene heterojunction and immobilized the as-prepared photocatalyst into a polyvinylidene fluoride (PVDF) membrane using phase inversion method to fabricate a photocatalytic membrane system. The CuWO₄/Ti₃C₂ heterostructure, prepared by the hydrothermal method, and immobilized CuWO₄/Ti₃C₂/PVDF membrane exhibit a significant activity in photocatalytic MB degradation performance which is 1.82 and 1.66 times higher than that of pure ones, respectively. This improvement is attributed to the energy band structure of the Schottky heterojunction, leads to enhanced charge transfer efficiency of photo-induced electrons from CuWO₄ to Ti₃C₂ and reduced electron–hole recombination, confirmed by Mott–Schottky and photoluminescence (PL) spectroscopy. Based on the obtained results, the immobilized CuWO₄/Ti₃C₂/PVDF membrane with a satisfactory reusability can be considered as a promising polymeric photocatalytic membrane for water treatment applications.

Graphical Abstract

Abstract Image

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CuWO4/Ti3C2 MXene异质结构：光催化PVDF膜的制备与固定化

由有机污染物引起的水污染是一个日益受到重视的重大全球环境问题。聚合物光催化膜（PPMs）具有光催化和膜分离的双重优点，在水净化中发挥着重要的作用。在本研究中，我们合成了CuWO4/Ti3C2 MXene杂化异质结，并将所制备的光催化剂用相转化法固定在聚偏氟乙烯（PVDF）膜上，制备了光催化膜体系。水热法制备的CuWO4/Ti3C2异质结构和固定化CuWO4/Ti3C2/PVDF膜在光催化降解MB方面表现出明显的活性，分别是纯CuWO4/Ti3C2/PVDF膜的1.82倍和1.66倍。这种改进归因于肖特基异质结的能带结构，导致光诱导电子从CuWO4到Ti3C2的电荷转移效率提高，并减少了电子-空穴复合，莫特-肖特基和光致发光（PL）光谱证实了这一点。综上所述，固定化CuWO4/Ti3C2/PVDF膜具有良好的可重复使用性，是一种很有前途的水处理聚合物光催化膜。图形抽象

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来源期刊

Fibers and Polymers 工程技术-材料科学：纺织

CiteScore

3.90

自引率

8.00%

发文量

267

审稿时长

3.9 months

期刊介绍： -Chemistry of Fiber Materials, Polymer Reactions and Synthesis- Physical Properties of Fibers, Polymer Blends and Composites- Fiber Spinning and Textile Processing, Polymer Physics, Morphology- Colorants and Dyeing, Polymer Analysis and Characterization- Chemical Aftertreatment of Textiles, Polymer Processing and Rheology- Textile and Apparel Science, Functional Polymers