Effect of the Morphological Characteristic and Composition of Electrospun Polyvinylidene Fluoride/Graphene Oxide Membrane on Its Pb2+ Adsorption Capacity

Nguyen, Thuy Thi Thu; Nguyen, Huu The; Trinh, Hai Thi; Bui, Trang Thi Thu; Le, Anh‐Tuan; Huy, Trần Quang

doi:10.1007/s13233-022-0012-1

Cited by 10 publications

(2 citation statements)

References 35 publications

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“…GO was prepared from graphite flakes by the modified Hummer method as reported in our previous study 17 . Briefly, 3 g of graphite powder was put in a 500 ml flask placed in an ice bath.…”

Section: Methodsmentioning

confidence: 99%

“…In the FTIR spectra of electrospun PVDF and PVDF/GO4 fibers, the intensity of the absorption peak of the β phase at 840 cm −1 significantly increased, while the characteristic peaks of the α phase at 613 cm −1 , 763 cm −1 , 796 cm −1 , and 974 cm −1 completely disappeared 17 . Moreover, the bands at 874 cm −1 are assigned to C-H wagging 22 and the vibration of the β phase 23 , which appeared with higher intensity in the FTIR spectra of the electrospun PVDF and PVDF/GO4 fibers than in that of the PVDF powder.…”

Section: Influence Of the Electrospinning Process And Go Composition ...mentioning

confidence: 97%

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Enhancement of the crystalline phase in poly(vinylidene fluoride) by using the electrospinning technique and graphene oxide composition

2023

Sci. Tech. Dev. J.

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Introduction: Poly(vinylidene fluoride) (PVDF) possesses some unique characteristics, such as piezoelectric, ferroelectric, and pyroelectric properties. The β crystalline phase of PVDF exhibits the strongest piezoelectric and pyroelectric properties. In this study, the influence of the electrospinning process and graphene oxide (GO) composition on the β -phase formation of PVDF fibers is reported. Methods: The morphology of electrospun PVDF and PVDF/GO fibers was observed using a scanning electron microscope (SEM). Characteristics of the crystal phase of electrospun PVDF and PVDF/GO fibers were analyzed by Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray diffraction (XRD), and differential scanning calorimetry (DSC). Results: The PVDF fiber fabricated by the electrospinning technique had a crystallinity degree that increased by more than 117% compared to that of the precursor PVDF powder. The X-ray diffraction results show that the entire α phase of PVDF was converted to the β phase due to elongation deformation under the force of an electrical field during the electrospinning process. The presence of GO also induced the formation of the β phase of PVDF due to the interaction between the atomic groups on the surface of GO sheets and on the PVDF molecular chains. Conclusion: Both the electrospinning process and GO led to an increase in the crystallinity of PVDF. PVDF/GO nanofibers with crystallinity degrees above 60% can be applied in many fields, such as water purification membranes, air filters, energy harvesting materials, biosensors, and catalysts.

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“…GO was prepared from graphite flakes by the modified Hummer method as reported in our previous study 17 . Briefly, 3 g of graphite powder was put in a 500 ml flask placed in an ice bath.…”

Section: Methodsmentioning

confidence: 99%

Section: Influence Of the Electrospinning Process And Go Composition ...mentioning

confidence: 97%

Enhancement of the crystalline phase in poly(vinylidene fluoride) by using the electrospinning technique and graphene oxide composition

2023

Sci. Tech. Dev. J.

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An Adsorptive Membrane Based on Electrospun Graphene Oxide/Poly(vinylidene) Fluoride Fiber Coated with Chitosan for Removal of Manganese Ions from Aqueous Solutions Using a Simple Filtration Process

Le,

Vu,

Nguyen

et al. 2023

Fibers Polym

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Crucial role of polymeric binders in enhancing energy density of supercapacitors

Yoon,

Lee,

Yun

et al. 2024

Macromol. Res.

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Effect of the Morphological Characteristic and Composition of Electrospun Polyvinylidene Fluoride/Graphene Oxide Membrane on Its Pb2+ Adsorption Capacity

Cited by 10 publications

References 35 publications

Enhancement of the crystalline phase in poly(vinylidene fluoride) by using the electrospinning technique and graphene oxide composition

Enhancement of the crystalline phase in poly(vinylidene fluoride) by using the electrospinning technique and graphene oxide composition

An Adsorptive Membrane Based on Electrospun Graphene Oxide/Poly(vinylidene) Fluoride Fiber Coated with Chitosan for Removal of Manganese Ions from Aqueous Solutions Using a Simple Filtration Process

Crucial role of polymeric binders in enhancing energy density of supercapacitors

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