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Surface modified of polyacrylonitrile nanofibers by TiO2/MWCNT for photodegradation of organic dyes and pharmaceutical drugs under visible light irradiation
KTH, School of Engineering Sciences (SCI), Applied Physics. Mechanical Engineering Department, Canadian International College, Fifth Settlement, New Cairo, Egypt.
KTH, School of Engineering Sciences (SCI), Applied Physics, Biomedical and X-ray Physics.ORCID iD: 0000-0001-5678-5298
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2019 (English)In: Environmental Research, ISSN 0013-9351, E-ISSN 1096-0953, Vol. 179, article id 108788Article in journal (Refereed) Published
Abstract [en]

This work describes the fabrication of two composite nanofibers systems containing polyacrylonitrile polymer (PAN), Multiwall carbon nanotubes (MWCNT) and Titania (TiO2) nanoparticles. Photodegradation experiments were performed to study the effect of various parameters including pH, catalyst dose, pollutant concentration and reaction time for three model compounds, methylene blue (MB), indigo carmine (IC), and ibuprofen (IBU) under visible light. Morphology and structure of the modified composite nanofibers were characterized by X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Thermogravimetric analysis (TGA), Photoluminescence (PL) spectroscopy, Raman spectra, and X-ray Photoelectron Spectra (XPS) analyses. The photocatalytic performance was achieved in a rather short time visible light (<30 min) and under low power intensity (125 W) compared to earlier reports. Kinetics data fitted well using pseudo-first order model to describe the mechanism of photocatalytic degradation processes. The stability and flexibility of the fabricated composite nanofibers allow their application in a continuous flow system and their re-use after several cycles.

Place, publisher, year, edition, pages
Academic Press, 2019. Vol. 179, article id 108788
Keywords [en]
Composite nanofibers, Photocatalytic, Photodegradation, Visible light
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-267885DOI: 10.1016/j.envres.2019.108788ISI: 000497259100012PubMedID: 31590001Scopus ID: 2-s2.0-85072802227OAI: oai:DiVA.org:kth-267885DiVA, id: diva2:1410899
Note

QC 20200302

Available from: 2020-03-02 Created: 2020-03-02 Last updated: 2024-03-18Bibliographically approved

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Khalil, AlaaToprak, Muhammet SadakaMuhammed, MamounUheida, Abdusalam

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