Photosensitized Thermoplastic Nano-Photocatalysts Active in the Visible Light Range for Potential Applications Inside Extraterrestrial Facilities.
copolyacrylates
depollution
photocatalysis
porphyrins
space facilities
visible light radiation
Journal
Nanomaterials (Basel, Switzerland)
ISSN: 2079-4991
Titre abrégé: Nanomaterials (Basel)
Pays: Switzerland
ID NLM: 101610216
Informations de publication
Date de publication:
17 Mar 2022
17 Mar 2022
Historique:
received:
25
02
2022
revised:
10
03
2022
accepted:
15
03
2022
entrez:
26
3
2022
pubmed:
27
3
2022
medline:
27
3
2022
Statut:
epublish
Résumé
Among different depollution methods, photocatalysis activated by solar light is promising for terrestrial outdoor applications. However, its use in underground structures and/or microgravity environments (e.g., extraterrestrial structures) is forbidden. In these cases, there are issues related to the energy emitted from the indoor lighting system because it is not high enough to promote the photocatalytic mechanism. Moreover, microgravity does not allow the recovery of the photocatalytic slurry from the depolluted solution. In this work, the synthesis of a filmable nanocomposite based on semiconductor nanoparticles supported by photosensitized copolyacrylates was performed through a bulk in situ radical copolymerization involving a photosensitizer macromonomer. The macromonomer and the nanocomposites were characterized through UV-Vis, fluorescence and NMR spectroscopies, gel permeation chromatography and thermogravimetric analysis. The photocatalytic activity of the sensitized nanocomposites was studied through photodegradation tests of common dyes and recalcitrant xenobiotic pollutants, employing UV-Vis and visible range (λ > 390 nm) light radiations. The sensitized nanocomposite photocatalytic performances increased about two times that of the unsensitized nanocomposite and that of visible range light radiation alone (>390 nm). The experimental data have shown that these new systems, applied as thin films, have the potential for use in indoor deep underground and extraterrestrial structures.
Identifiants
pubmed: 35335809
pii: nano12060996
doi: 10.3390/nano12060996
pmc: PMC8948973
pii:
doi:
Types de publication
Journal Article
Langues
eng
Subventions
Organisme : University of Catania
ID : PIAno di inCEntivi per la Ricerca di Ateneo, PIACERI-Linea 2
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