Electrospun cellulose acetate fibers for the photodecolorization of methylene blue solutions under natural sunlight

I. Santos-Sauceda*, M. M. Castillo-Ortega, T. del Castillo-Castro, L. Armenta-Villegas, R. Ramírez-Bon

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Cellulose acetate (CA) fibers were obtained by electrospinning and their properties analyzed by scanning electron microscopy, Fourier-transform infrared spectroscopy, X-ray diffraction (XRD), differential scanning calorimeter (DSC) and thermogravimetric analysis. The effect of the polymer concentration on crystallinity and fiber diameter of the obtained material was studied by DSC. The application of the pure polymeric fibers to the discoloration of methylene blue (MB) aqueous solutions in dark and under sunlight irradiation was evaluated with UV–Vis absorption and photoluminescence spectroscopies. Also, the photodegradation of the dye was compared using CA powder and fibers under UV irradiation. The results revealed that the dye molecule discoloration with CA fibers mesh was higher under sunlight irradiation than in dark conditions. The maximum absorption band (664 nm) of MB decreased with the time in the absence and presence of polymer under either solar natural exposition or UV irradiation. The dye organic discoloration efficiency obtained by using electrospun CA mesh was 28% and 98% in dark conditions and under natural solar illumination, respectively. The FTIR showed the interaction of dye organic or sub-products generated with the polymeric component. This work provides a simple method for the discoloration of wastewater effluents using microfibers composed of only one abundant polymeric material, allowing the reduction in the amount of material needed and therefore the manufacturing costs of the adsorbent material.

Original languageEnglish
Pages (from-to)4419-4438
Number of pages20
JournalPolymer Bulletin
Volume78
Issue number8
DOIs
StatePublished - Aug 2021

Bibliographical note

Funding Information:
Irela Santos Sauceda acknowledgments CONACYT (Consejo Nacional de Ciencia y Tecnología, México) for the financial support provided during this study. The authors thank their colleagues M.I. Adair Jimenez Nieto and Ing. José Eleazar Urbina Álvarez for his assistance in the analysis morphology by SEM, to Q.A. Martín Adelaido Hernández Landaverde, M.T. Rivelino Flores Farías and Dr. Diego Hernandez for XRD, UV–Vis and photoluminescence spectroscopies, TGA and DSC studies, respectively.

Funding Information:
Irela Santos Sauceda acknowledgments CONACYT (Consejo Nacional de Ciencia y Tecnolog?a, M?xico) for the financial support provided during this study. The authors thank their colleagues M.I. Adair Jimenez Nieto and Ing. Jos? Eleazar Urbina ?lvarez for his assistance in the analysis morphology by SEM, to Q.A. Mart?n Adelaido Hern?ndez Landaverde, M.T. Rivelino Flores Far?as and Dr. Diego Hernandez for XRD, UV?Vis and photoluminescence spectroscopies, TGA and DSC studies, respectively.

Publisher Copyright:
© 2020, Springer-Verlag GmbH Germany, part of Springer Nature.

Keywords

  • Cellulose acetate
  • Electrospinning
  • Methylene blue
  • Sunlight

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