Journal of Textile Research ›› 2021, Vol. 42 ›› Issue (05): 9-15.doi: 10.13475/j.fzxb.20200802807

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Photocatalytic performance of iron hexadecachlorophthalocyanine/ polyacrylonitrile composite nanofibers synergistically enhanced by chloride ion

ZHU Zhexin, MA Xiaoji, XIA Lin, LÜ Wangyang(), CHEN Wenxing   

  1. School of Materials Science & Engineering, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
  • Received:2020-08-04 Revised:2021-01-29 Online:2021-05-15 Published:2021-05-20
  • Contact: Lü Wangyang E-mail:luwy@zstu.edu.cn

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Abstract:

In order to improve the catalytic activity and reusability of the powder catalyst and effectively remove the organic pollutants in high salinity wastewater, iron hexadecachlorophthalocyanine (FePcCl16)/polyacrylonitrile(PAN) composite nanofibers were prepared using electrospinning technology. The composite nanofibers were characterized by field emission scaning electron microscopy, transmission electron microscopy and X-ray diffraction. Carbamazepine (CBZ) was selected as the model pollutant to study the photocatalytic degradation activity of photoactivated persulfate of composite nanofibers in the presence of chloride ions. The results show that FePcCl16 was well dispersed in PAN nanofibers, and FePcCl16 molecular clustering was successfully avoided to maintain its catalytic performance. Under simulated sunlight, the catalytic activity of composite nanofibers increased with the increase of chloride ion concentration. At higher chloride ion concentrations (6.0-18.0 g/L), CBZ and its degradation products (including potentially toxic chlorinated compounds) can be completely degraded. After 5 degradation recycling tests, FePcCl16/PAN still demonstrate good catalytic degradation performance.

Key words: organic pollutant degradation, electrospinning, iron hexadecachlorophthalocyanine, nanofiber, degradation product, photocatalytic activity, wasterwater treatment

CLC Number: 

  • O634.32

Fig.1

SEM images of PAN and FePcCl16/PAN nanofibers (×20 000)"

Fig.2

TEM images of PAN and FePcCl16/PAN nanofibers (×20 000)"

Fig.3

XRD spectra of PAN nanofibers, FePcCl16/PAN composite nanofibers and FePcCl16 powders"

Fig.4

Photocatalytic performance comparison of FePcCl16 powder and FePcCl16/PAN composite nanofibers"

Fig.5

Effect of chloride ion concentration on photocatalytic degradation of CBZ by FePcCl16/PAN composite nanofibers"

Fig.6

Cyclic catalytic degradation of CBZ by FePcCl16/PAN composite nanofibers"

Tab.1

Degradation of CBZ products by composite nanofibers in presence of chloride ions"

降解产物编号 化学式 质荷比 保留时间/min
A C13H9N 180.082 6 5.72
B C13H9NO 196.077 3 4.33
C C14H9NO 210.092 3 5.93
D C15H10N2O2 251.082 4 3.73
E1 C15H12N2O2 253.098 0 3.20
E2 C15H12N2O2 253.092 8 3.97
E3 C15H12N2O2 253.098 1 4.57
F C15H13NO 224.108 3 4.14
G1 C13H8ClN 214.042 3 6.81
G2 C13H8ClN 214.043 3 6.90
G3 C13H8ClN 214.043 0 7.39

Fig.7

Effect of chloride ion concentration on photocatalytic degradation of chlorinated organic by-products G1, G2 and G3 by FePcCl16/PAN composite nanofibers"

Fig.8

Mass spectra of chlorinated organic by-products G1, G2 and G3"

Fig.9

Proposed CBZ photocatalytic degradation pathway inpresence of NaCl by FePcCl16/PAN composite nanofibers"

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