, Volume 26, Issue 6, pp 3909–3922 | Cite as

Waste cotton fiber/Bi2WO6 composite film for dye removal

  • Qin Qin
  • Ronghui GuoEmail author
  • Shaojian Lin
  • Shouxiang Jiang
  • Jianwu Lan
  • Xiaoxu Lai
  • Ce Cui
  • Hongyan Xiao
  • Yong Zhang
Original Research


In this study, the waste cotton fiber (WCF)/Bi2WO6 (BWO) composite film was prepared from BWO and WCF, which is dissolved in ionic liquid ([Amim]Cl). The samples were systematically characterized by scanning electron microscopy, X-ray diffraction, energy dispersive spectroscopy, X-ray photoelectron spectroscopy, Brunauer–Emmett–Teller surface area and UV–Vis diffuse reflection spectroscopy. The removal efficiency of rhodamine b (RhB) and methylene blue (MB) by the composite film in the dark and under visible light were investigated. The results show that the removal abilities of the composite films for RhB and MB are improved with the rise of BWO content. The removal efficiency of RhB and MB arrives at 93.73% and 97.04% under visible light irradiation when the BWO content is 1.5%, respectively. The degradation rate of MB still reaches 89% after four cycle tests. Superoxide radicals (\( ^{\cdot} {\text{O}}_{2}^{ - } \)) and holes (h+) plays a major role in the degradation and hydroxyl radicals (·OH) plays an minor role. The WCF/BWO composite film can be potentially applied in photocatalysis and wastewater treatment fields.

Graphical abstract


Waste cotton fiber Bi2WO6 Adsorption and photocatalytic activity Composite film Dye removal 

List of symbols


The degradation efficiency of RhB


The initial absorbance of RhB


The absorbance of RhB after being exposed to visible light for a period of time


The rate constant

\( ^{\cdot} {\text{O}}_{2}^{ - } \)

Superoxide radical




Hydroxyl radical



Waste cotton fiber




Rhodamine b


Methylene blue


1-Allyl-3-methylimidazolium chloride


Cetyl trimethyl ammonium bromide




Scanning electron microscopy


X-ray diffraction


Energy dispersive spectroscopy


X-ray photoelectron spectroscopy




Ethylenediaminetetraacetic acid disodium salt




Isopropyl alcohol



This work was financially Supported by Sichuan Science and Technology Program (2019YFG0244).


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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  • Qin Qin
    • 1
  • Ronghui Guo
    • 1
    Email author
  • Shaojian Lin
    • 1
  • Shouxiang Jiang
    • 2
  • Jianwu Lan
    • 1
  • Xiaoxu Lai
    • 1
  • Ce Cui
    • 1
  • Hongyan Xiao
    • 1
  • Yong Zhang
    • 1
  1. 1.College of Light Industry, Textile and Food EngineeringSichuan UniversityChengduChina
  2. 2.Institute of Textiles and ClothingThe Hong Kong Polytechnic UniversityKowloonChina

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