Ups and Downs of Water Photodecolorization by Nanocomposite Polymer Nanofibers.

Autor:	Homaeigohar S; Nanochemistry and Nanoengineering, School of Chemical Engineering, Department of Chemistry and Materials Science, Aalto University, Kemistintie 1, 00076 Aalto, Finland. Shahin.homaeigohar@aalto.fi., Botcha NK; Nanochemistry and Nanoengineering, Institute for Materials Science, Faculty of Engineering, University of Kiel, 24143 Kiel, Germany. bnkp888@yahoo.com., Zarie ES; Nanochemistry and Nanoengineering, School of Chemical Engineering, Department of Chemistry and Materials Science, Aalto University, Kemistintie 1, 00076 Aalto, Finland. eman.zarie@aalto.fi.; Department of Therapeutic Chemistry, National Research Centre, Dokki 12311, Giza, Egypt. eman.zarie@aalto.fi., Elbahri M; Nanochemistry and Nanoengineering, School of Chemical Engineering, Department of Chemistry and Materials Science, Aalto University, Kemistintie 1, 00076 Aalto, Finland. mady.elbahri@aalto.fi.; Nanochemistry and Nanoengineering, Institute for Materials Science, Faculty of Engineering, University of Kiel, 24143 Kiel, Germany. mady.elbahri@aalto.fi.
Jazyk:	angličtina
Zdroj:	Nanomaterials (Basel, Switzerland) [Nanomaterials (Basel)] 2019 Feb 12; Vol. 9 (2). Date of Electronic Publication: 2019 Feb 12.
DOI:	10.3390/nano9020250
Abstrakt:	Given the exponentially expanding water pollution causing water scarcity, there is an urgent need for operative nanotechnological systems that can purify water, with insignificant energy consumption, and rapidly. Here, we introduce a nanocomposite system based on TiO₂ nanoparticles (NPs) and PES nanofibers (NFs) that can adsorb and then photodecompose organic water pollutants such as dye molecules. We evaluate pros and cons of this system with respect to its purification efficiency and structural properties that can be impacted by the photocatalytic activity of the nanofillers. While the material is superhydrophilic and able to remove 95% methylene blue (MB) from water via adsorption/photodecomposition, its thermomechanical properties decline upon UV irradiation. However, these properties still remain at the level of the neat NFs. The removal behavior is modeled by the first- and second-order kinetic models from the kinetic point of view. The nanocomposite NFs' removal behavior complies much better with the second-order kinetic model. Overall, such feedbacks implied that the nanocomposite can be effectively applied for water treatment and the structural properties are still as reliable as those of the neat counterpart. Competing Interests: The authors declare no conflict of interest. The founding sponsors had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript; and in the decision to publish the results.
Databáze:	MEDLINE
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