Adsorption and Visible Light Photocatalytic Degradation of Electrospun PAN@W₁₈O₄₉ Nanofibers

Abstract

Low density and high porosity polyacrylonitrile(PAN) nanofibers prepared by electrospinning were used as brackets for photocatalyst W₁₈O₄₉ to prepare a kind of light weight and easy recycling water purification material for the first time. The influence of tungsten source concentration on the formation of W₁₈O₄₉ during a solvothermal process was systematically investigated. The prepared PAN@W₁₈O₄₉ nanofibers(NFs) utilize the outstanding visible light photocatalytic performance and the adsorption performance of W₁₈O₄₉, and at the same time give the advantages of low density and easy recyclability. The pollutant removal performance of the composite nanofibers was investigated by using five contaminants including rhodamine B(RhB), methylene blue(MB), malachite green(MG), methyl orange(MO) and chlortetracycline(CTC) as substrates. Among them, the degradation process of rhodamine B has been studied in detail. After five cycles, the degradation efficiency did not decrease significantly, showing excellent reusability of PAN@W₁₈O₄₉ NFs. Besides, the adsorption performance of PAN@W₁₈O₄₉ NFs during the photocatalytic process was also studied in detail. Compared with recently reported literature, the degradation efficiency of organic pollutants by PAN@W₁₈O₄₉ NFs showed better performance, and PAN@W₁₈O₄₉ NFs felt had a promising prospect in the field of degradation of contaminants.

Keywords

Photocatalysis / Adsorption / Electrospinning / Solvothermal reaction / Dye degradation

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