Fabrication of porous Fe2O3/PTFE nanofiber membranes and their application as a catalyst for dye degradation

被引：32

作者：

Kang, Weimin ^{[1
]}

Li, Fu ^{[1
]}

Zhao, Yixia ^{[2
]}

Qiao, Chunmei ^{[1
]}

Ju, Jingge ^{[1
]}

Cheng, Bowen ^{[2
]}

机构：

[1] Tianjin Polytech Univ, Sch Text, Tianjin 300387, Peoples R China

[2] State Key Lab Separat Membranes & Membrane Proc, Tianjin 300387, Peoples R China

来源：

RSC ADVANCES | 2016年 / 6卷 / 39期

基金：

中国国家自然科学基金;

关键词：

PHOTOCATALYTIC DEGRADATION; TIO2; NANOFIBERS; AZO-DYE; ADSORPTION; OXIDATION; WATER;

D O I：

10.1039/c5ra27879a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Novel porous polytetrafluoroethylene (PTFE) nanofiber membranes containing Fe2O3 (Fe2O3/PTFE), used as a heterogeneous catalyst, were prepared via a three-step method by electrospinning, immersion and calcination. The morphology and structure of porous Fe2O3/PTFE were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and X-ray diffractometer (XRD). The effects of the thickness of the as-spun nanofiber membrane, the immersion time and impregnating solution concentration on the content of Fe2O3 which was the active component were discussed. The degradation of Acid Red with hydrogen peroxide catalyzed by the porous Fe2O3/PTFE under UV irradiation was investigated. UV-vis and ESR techniques provided an insight into the nature of the degradation products and the formed active species. The results showed that Fe2O3 was successfully supported on the surface of porous PTFE nanofibers. The porous Fe2O3/PTFE nanofiber membrane prepared under the optimized parameters possessed high photocatalytic activity without any dye adsorption and could be recycled by simple filtration.

引用

页码：32646 / 32652

页数：7

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