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Electrospinning preparation, characterization, and enhanced photocatalytic activity of an Silicotungstic acid (H4SiW12O40)/poly(vinyl alcohol)/poly(methyl methacrylate) composite nanofiber membrane

Silicotungstic acid (HSiWO)/poly(vinyl alcohol) (PVA)/poly(methyl methacrylate) (PMMA) composite nanofiber membranes were prepared by an electrospinning technique. A PMMA emulsion was mixed with PVA and HSiWO evenly in water (electrospinning solvent). The configuration and elemental composition of t... Full description

Journal Title: Journal of Applied Polymer Science 15 March 2016, Vol.133(11), pp.n/a-n/a
Main Author: Li, Tingting
Other Authors: Zhang, Zhiming , Li, Wei , Liu, Ce , Zhou, Haoyu , An, Libao
Format: Electronic Article Electronic Article
Language:
Subjects:
Quelle: John Wiley & Sons, Inc.
ID: ISSN: 0021-8995 ; E-ISSN: 1097-4628 ; DOI: 10.1002/app.43193
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recordid: wj10.1002/app.43193
title: Electrospinning preparation, characterization, and enhanced photocatalytic activity of an Silicotungstic acid (H4SiW12O40)/poly(vinyl alcohol)/poly(methyl methacrylate) composite nanofiber membrane
format: Article
creator:
  • Li, Tingting
  • Zhang, Zhiming
  • Li, Wei
  • Liu, Ce
  • Zhou, Haoyu
  • An, Libao
subjects:
  • Catalysts
  • Electrospinning
  • Membranes
  • Photochemistry
  • Recycling
ispartof: Journal of Applied Polymer Science, 15 March 2016, Vol.133(11), pp.n/a-n/a
description: Silicotungstic acid (HSiWO)/poly(vinyl alcohol) (PVA)/poly(methyl methacrylate) (PMMA) composite nanofiber membranes were prepared by an electrospinning technique. A PMMA emulsion was mixed with PVA and HSiWO evenly in water (electrospinning solvent). The configuration and elemental composition of the membranes were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, and X‐ray photoelectron spectroscopy. The results indicate that HSiWO with an intact Keggin structure existed in the composite membrane. The as‐prepared HSiWO/PVA/PMMA membranes exhibited enhanced photocatalytic efficiency (>84%) in the degradation of methyl orange (MO); it outperformed HSiWO powder (4.6%) and the HSiWO/PVA nanofiber membrane (75.2%) under UV irradiation. More importantly, the HSiWO/PVA/PMMA membranes could be easily separated from the aqueous MO solution, and the photocatalytic efficiency of the membranes decreased inappreciably after three photocatalytic cycles. This may have been due to the enhanced water tolerance of the membranes and the stability of HSiWO in the membranes. The photocatalytic process was driven by the reductive pathway with a much faster degradation rate because of the presence of PVA. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. , , 43193.
language:
source: John Wiley & Sons, Inc.
identifier: ISSN: 0021-8995 ; E-ISSN: 1097-4628 ; DOI: 10.1002/app.43193
fulltext: fulltext
issn:
  • 0021-8995
  • 00218995
  • 1097-4628
  • 10974628
url: Link


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titleElectrospinning preparation, characterization, and enhanced photocatalytic activity of an Silicotungstic acid (H4SiW12O40)/poly(vinyl alcohol)/poly(methyl methacrylate) composite nanofiber membrane
creatorLi, Tingting ; Zhang, Zhiming ; Li, Wei ; Liu, Ce ; Zhou, Haoyu ; An, Libao
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subjectCatalysts ; Electrospinning ; Membranes ; Photochemistry ; Recycling
descriptionSilicotungstic acid (HSiWO)/poly(vinyl alcohol) (PVA)/poly(methyl methacrylate) (PMMA) composite nanofiber membranes were prepared by an electrospinning technique. A PMMA emulsion was mixed with PVA and HSiWO evenly in water (electrospinning solvent). The configuration and elemental composition of the membranes were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, and X‐ray photoelectron spectroscopy. The results indicate that HSiWO with an intact Keggin structure existed in the composite membrane. The as‐prepared HSiWO/PVA/PMMA membranes exhibited enhanced photocatalytic efficiency (>84%) in the degradation of methyl orange (MO); it outperformed HSiWO powder (4.6%) and the HSiWO/PVA nanofiber membrane (75.2%) under UV irradiation. More importantly, the HSiWO/PVA/PMMA membranes could be easily separated from the aqueous MO solution, and the photocatalytic efficiency of the membranes decreased inappreciably after three photocatalytic cycles. This may have been due to the enhanced water tolerance of the membranes and the stability of HSiWO in the membranes. The photocatalytic process was driven by the reductive pathway with a much faster degradation rate because of the presence of PVA. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. , , 43193.
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descriptionSilicotungstic acid (HSiWO)/poly(vinyl alcohol) (PVA)/poly(methyl methacrylate) (PMMA) composite nanofiber membranes were prepared by an electrospinning technique. A PMMA emulsion was mixed with PVA and HSiWO evenly in water (electrospinning solvent). The configuration and elemental composition of the membranes were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, and X‐ray photoelectron spectroscopy. The results indicate that HSiWO with an intact Keggin structure existed in the composite membrane. The as‐prepared HSiWO/PVA/PMMA membranes exhibited enhanced photocatalytic efficiency (>84%) in the degradation of methyl orange (MO); it outperformed HSiWO powder (4.6%) and the HSiWO/PVA nanofiber membrane (75.2%) under UV irradiation. More importantly, the HSiWO/PVA/PMMA membranes could be easily separated from the aqueous MO solution, and the photocatalytic efficiency of the membranes decreased inappreciably after three photocatalytic cycles. This may have been due to the enhanced water tolerance of the membranes and the stability of HSiWO in the membranes. The photocatalytic process was driven by the reductive pathway with a much faster degradation rate because of the presence of PVA. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. , , 43193.
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abstractSilicotungstic acid (HSiWO)/poly(vinyl alcohol) (PVA)/poly(methyl methacrylate) (PMMA) composite nanofiber membranes were prepared by an electrospinning technique. A PMMA emulsion was mixed with PVA and HSiWO evenly in water (electrospinning solvent). The configuration and elemental composition of the membranes were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, and X‐ray photoelectron spectroscopy. The results indicate that HSiWO with an intact Keggin structure existed in the composite membrane. The as‐prepared HSiWO/PVA/PMMA membranes exhibited enhanced photocatalytic efficiency (>84%) in the degradation of methyl orange (MO); it outperformed HSiWO powder (4.6%) and the HSiWO/PVA nanofiber membrane (75.2%) under UV irradiation. More importantly, the HSiWO/PVA/PMMA membranes could be easily separated from the aqueous MO solution, and the photocatalytic efficiency of the membranes decreased inappreciably after three photocatalytic cycles. This may have been due to the enhanced water tolerance of the membranes and the stability of HSiWO in the membranes. The photocatalytic process was driven by the reductive pathway with a much faster degradation rate because of the presence of PVA. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. , , 43193.
doi10.1002/app.43193
date2016-03-15