Fabrication of flexible PAN/Bi2WO6/BiOI heterojunction nanofiber and the property of photocatalytic degradation

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Applied Surface Science Pub Date : 2024-12-31 DOI:10.1016/j.apsusc.2024.162266

Pingping Teng, Yinxiao Chen, Nan Lu, Chen Shi, Zhihai Liu, Zheng Zhu, Yang Zhang, Shuai Gao, Sivagunalan Sivanathan, Kang Li

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Abstract

This paper presents a novel flexible PAN/Bi₂WO₆/BiOI heterojunction nanofiber, fabricated through electrospinning, as an advanced photocatalyst for the degradation of pollutants. The PAN nanofibers serve a stable and reusable support for the Bi₂WO₆/BiOI heterojunctions, which were constructed using a combination of solvothermal and successive ionic layer adsorption and reaction (SILAR) methods. The separation efficiency of the photogenerated electron-hole pairs and photocatalytic degradation efficiency of Rhodamine B under visible light were significantly enhanced by the heterojunction structure. Comprehensive characterizations confirmed the successful formation of the heterostructure and its superior electron transfer capabilities. The study identified superoxide radicals (·O₂^-) and photogenerated holes (h⁺) as key contributors to the photocatalytic process. The optimized nanofiber exhibited a degradation rate constant of 6.529 × 10^-2min⁻¹, significantly outperforming its individual components, and maintained high activity over multiple reuse cycles. This research provides a promising approach for designing high-efficiency, recyclable photocatalytic materials with potential applications in environmental remediation.

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来源期刊

Applied Surface Science 工程技术-材料科学：膜

CiteScore

12.50

自引率

7.50%

发文量

3393

审稿时长

67 days

期刊介绍： Applied Surface Science covers topics contributing to a better understanding of surfaces, interfaces, nanostructures and their applications. The journal is concerned with scientific research on the atomic and molecular level of material properties determined with specific surface analytical techniques and/or computational methods, as well as the processing of such structures.