Next Article in Journal
New Biodegradable Poly(l-lactide)-Block-Poly(propylene adipate) Copolymer Microparticles for Long-Acting Injectables of Naltrexone Drug
Previous Article in Journal
Human Adipose-Derived Mesenchymal Stem Cells-Incorporated Silk Fibroin as a Potential Bio-Scaffold in Guiding Bone Regeneration
Article

Design and Performance of Novel Self-Cleaning g-C3N4/PMMA/PUR Membranes

1
IT4Innovations, VŠB—Technical University of Ostrava, Ostrava, 17. listopadu 15/2172, 708 33 Ostrava, Czech Republic
2
Nanotechnology Centre, VŠB-Technical University of Ostrava, 17. listopadu 15/2172, 708 33 Ostrava, Czech Republic
3
Institute for Materials Science and Max Bergmann Center of Biomaterials, TU Dresden, 01062 Dresden, Germany
4
Institute of Inorganic Chemistry of the Czech Academy of Sciences, Husinec-Řež 1001, 250 68 Řež, Czech Republic
*
Author to whom correspondence should be addressed.
Current address: International Iberian Nanotechnology Laboratory, Avenida Mestre José Veiga s/n, 4715-330 Braga, Portugal.
Polymers 2020, 12(4), 850; https://doi.org/10.3390/polym12040850
Received: 10 March 2020 / Revised: 27 March 2020 / Accepted: 3 April 2020 / Published: 7 April 2020
(This article belongs to the Section Polymer Applications)
In the majority of photocatalytic applications, the photocatalyst is dispersed as a suspension of nanoparticles. The suspension provides a higher surface for the photocatalytic reaction in respect to immobilized photocatalysts. However, this implies that recovery of the particles by filtration or centrifugation is needed to collect and regenerate the photocatalyst. This complicates the regeneration process and, at the same time, leads to material loss and potential toxicity. In this work, a new nanofibrous membrane, g-C3N4/PMMA/PUR, was prepared by the fixation of exfoliated g-C3N4 to polyurethane nanofibers using thin layers of poly(methyl methacrylate) (PMMA). The optimal amount of PMMA was determined by measuring the adsorption and photocatalytic properties of g-C3N4/PMMA/PUR membranes (with a different PMMA content) in an aqueous solution of methylene blue. It was found that the prepared membranes were able to effectively adsorb and decompose methylene blue. On top of that, the membranes evinced a self-cleaning behavior, showing no coloration on their surfaces after contact with methylene blue, unlike in the case of unmodified fabric. After further treatment with H2O2, no decrease in photocatalytic activity was observed, indicating that the prepared membrane can also be easily regenerated. This study promises possibilities for the production of photocatalytic membranes and fabrics for both chemical and biological contaminant control. View Full-Text
Keywords: exfoliated carbon nitride; self-cleaning surfaces; immersion coating; polyurethane nanofibers; photocatalysis; polymers; membrane; poly(methyl methacrylate) exfoliated carbon nitride; self-cleaning surfaces; immersion coating; polyurethane nanofibers; photocatalysis; polymers; membrane; poly(methyl methacrylate)
Show Figures

Graphical abstract

MDPI and ACS Style

Svoboda, L.; Licciardello, N.; Dvorský, R.; Bednář, J.; Henych, J.; Cuniberti, G. Design and Performance of Novel Self-Cleaning g-C3N4/PMMA/PUR Membranes. Polymers 2020, 12, 850. https://doi.org/10.3390/polym12040850

AMA Style

Svoboda L, Licciardello N, Dvorský R, Bednář J, Henych J, Cuniberti G. Design and Performance of Novel Self-Cleaning g-C3N4/PMMA/PUR Membranes. Polymers. 2020; 12(4):850. https://doi.org/10.3390/polym12040850

Chicago/Turabian Style

Svoboda, Ladislav, Nadia Licciardello, Richard Dvorský, Jiří Bednář, Jiří Henych, and Gianaurelio Cuniberti. 2020. "Design and Performance of Novel Self-Cleaning g-C3N4/PMMA/PUR Membranes" Polymers 12, no. 4: 850. https://doi.org/10.3390/polym12040850

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop