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https://hdl.handle.net/10442/18422
Εξειδίκευση τύπου : | Άρθρο σε επιστημονικό περιοδικό |
Τίτλος: | Vapor–liquid–solid growth and properties of one dimensional PbO and PbO/SnO2 nanowires |
Δημιουργός/Συγγραφέας: | Kelaidis, Nikolaos Zervos, Matthew [EL] Λαθιωτάκης, Νεκτάριος N.[EN] Lathiotakis, Nektarios N. Chroneos, Alexander Tanasă, Eugenia Vasile, Eugeniu |
Εκδότης: | Royal Society of Chemistry |
Ημερομηνία: | 2022 |
Γλώσσα: | Αγγλικά |
ISSN: | 2633-5409 |
DOI: | 10.1039/D1MA00787D |
Περίληψη: | PbO nanowires have been obtained via a self-catalysed, vapor–liquid–solid mechanism and the reaction of Pb with O2 between 200 °C and 300 °C at 10 Pa. These had the form of tapes with a thickness of ∼20 nm, a width of ∼150 nm, and a length of up to ∼100 μm with a mixed orthorhombic and tetragonal crystal structure. The intermediate temperatures between 300 °C and 500 °C resulted in the formation of urchin-like structures but higher temperatures lead to a suppression of one-dimensional growth. We found that the morphology can be tuned in a reproducible way by adjusting the pressure, in which case we obtained two-dimensional plates at 1 kPa and spherical particles with diameters of ∼1–10 μm at 1 Pa for all temperatures between 100 °C and 500 °C. We did not obtain any PbO2 nanowires irrespective of the growth temperature and pressure but PbO nanowires were grown on SnO2 nanowires that were subsequently converted into PbO2/SnO2 branched nanowires, which are attractive for energy storage and the realization of advanced lead acid batteries. We describe in detail the properties of the PbO/SnO2 heterojunction by density functional theory calculations and show that it has a type II band line-up, which is also important for energy conversion, e.g. solar cells and photocatalysis. |
Τίτλος πηγής δημοσίευσης: | Materials Advances |
Τόμος/Κεφάλαιο: | 3 |
Τεύχος: | 3 |
Σελίδες: | 1695–1702 |
Θεματική Κατηγορία: | [EL] Νανοτεχνολογία[EN] Nanotechnology [EL] Χημική τεχνολογία[EN] Chemical technolgy [EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry |
Λέξεις-Κλειδιά: | Nanowires Vapor–liquid–solid method (VLS) Nanostructures |
Κάτοχος πνευματικών δικαιωμάτων: | © 2022 The Author(s) |
Όροι και προϋποθέσεις δικαιωμάτων: | This article is Open Access. |
Ηλεκτρονική διεύθυνση με ανοικτή πρόσβαση (link): | https://pubs.rsc.org/en/content/articlelanding/2022/ma/d1ma00787d |
Εμφανίζεται στις συλλογές: | Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο
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