Adsorption and Visible Light Photocatalytic Degradation of Electrospun PAN@W_(18)O_(49) Nanofibers

摘要

Low density and high porosity polyacrylonitrile(PAN)nanofibers prepared by electrospinning were used as brackets for photocatalyst W_(18)O_(49) 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 W_(18)O_(49) during a solvothermal process was systematically investigated.The prepared PAN@W_(18)O_(49) nanofibers(NFs)utilize the outstanding visible light photocatalytic performance and the adsorption performance of W_(18)O_(49),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@W_(18)O_(49) NFs.Besides,the adsorption performance of PAN@W_(18)O_(49) NFs during the photocatalytic process was also studied in detail.Compared with recently reported literature,the degradation efficiency of organic pollutants by PAN@W_(18)O_(49) NFs showed better performance,and PAN@W_(18)O_(49) NFs felt had a promising prospect in the field of degradation of contaminants.