Preparation and performance of modified polyacrylonitrile fibers photocatalyst with MIL-53(Fe)

被引：0
|
作者：
Deng Y. [1 ]
Shi X. [1 ]
Wang T. [1 ]
Liu L. [2 ]
Han Z. [1 ]
机构：
[1] School of Textile Science and Engineering, Tiangong University, Tianjin
[2] Tianjin Yunda Industry and Trade Co., Ltd., Tianjin
来源：
Fangzhi Xuebao/Journal of Textile Research | 2022年 / 43卷 / 03期
关键词：
Dye degradation; In-situ synthesis; Metal organic frameworks; Modified polyacrylonitrile fiber; Photocatalyst; Wastewater treatment;
D O I：
10.13475/j.fzxb.20201201106
中图分类号：
学科分类号：
摘要：
MIL-53(Fe) powder suffers from limited photoabsorption, low catalytic efficiency and poor recycling ability in the application of photocatalysis. A highly efficient MIL-53(Fe) photocatalyst was constructed with irregular structure via an in-situ synthesis method using amidoximated polyacryloni-trile(PAN) fiber as the support. The surface morphology, microstructure and light absorption performance of the photocatalyst were characterized and analyzed by scanning electron microscope, X-ray diffraction, Fourier transform infrared spectroscopy and UV-Vis diffuse reflectance spectroscopy, and the photocatalytic performance was evaluated by the degradation of an organic dye. The results indicate that the in-situ synthesized MIL-53(Fe) are evenly distributed on the modified PAN fibrous support, and partial MIL-53(Fe) exhibit certain crystalline properties. Furthermore, the fibrous ligand greatly extends the spectral response of MIL-53(Fe) to 800 nm through ligand-to-metal charge transfer (LMCT) effect. Benefiting from the synergistic effect of fiber ligand and terephthalic acid ligand, the in-situ produced MIL-53(Fe) shows high photocatalytic activity for dye degradation under visible light irradiation, much superior to the MIL-53(Fe) powder and the fiber supported MIL-53(Fe) using a direct combination method. The findings provide a novel approach to design high-efficiency photocatalysts based on metal organic framework materials. © 2022, Periodical Agency of Journal of Textile Research. All right reserved.
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页码：58 / 63
页数：5
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