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Hydrothermal synthesis of Bi [sub] 2 Se [sub] 3 platelets
Blaž Belec, Sandra Gardonio, Mattia Fanetti, Matjaž Valant, 2018, objavljeni povzetek znanstvenega prispevka na konferenci

Objavljeno v RUNG: 12.09.2018; Ogledov: 3126; Prenosov: 0
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Atomic-level mechanisms of magnesium oxidation
Sandra Gardonio, Mattia Fanetti, Matjaž Valant, Dmytro Orlov, 2016, objavljeni znanstveni prispevek na konferenci

Opis: Magnesium has been recently becoming an increasingly popular material for various applications. However, excessive chemical reactivity, and oxidation rate in particular, is a major obstruction on the way of Mg to become widely adopted. A significant problem causing the lack of Mg reactivity control is insufficient understanding of mechanisms involved in the oxidation of magnesium surface. Herewith we present the investigation of atomic-level mechanisms of oxidation initiation and propagation in pure Mg. Namely, X-ray photoelectron spectroscopy at synchrotron Elettra was used as a surface sensitive direct method to determine the valence of Mg and O and the valence band states at the early stage of oxide formation over a principal, most densely packed, crystallographic plane (0001) in pure Mg. The mechanisms of oxygen adsorption on magnesium free surface followed by oxidation (i.e. initiation and kinetics of MgO formation) are clarified. Copyright © 2016 by The Minerals, Metals & Materials Society. All rights reserved.
Ključne besede: Magnesium, Oxidation, Synchrotron radiation, X-ray photoelectron spectroscopy
Objavljeno v RUNG: 25.08.2017; Ogledov: 5004; Prenosov: 0
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Pursuing the stabilisation of crystalline nanostructured magnetic manganites through a green low temperature hydrothermal synthesis
Arianna Minelli, Paolo Dolcet, Stefano Diodati, Sandra Gardonio, Claudia Innocenti, Denis Badocco, Stefano Gialanella, Paolo Pastore, Luciano Pandolfo, Andrea Caneschi, Angela Trapanati, Silvia Gross, 2017, izvirni znanstveni članek

Opis: A quick, easy and green water-based synthesis protocol involving coprecipitation of oxalates combined with hydrothermal treatment resulted in the crystallisation of nanostructured manganites at a relatively low temperature (180 °C). The subcritical hydrothermal approach was shown to play a key role in stabilising phases which are generally achieved at much higher temperatures and under harsher conditions, thus disclosing an exciting alternative for their synthesis. Through this mild wet chemistry approach, the compounds CuMnO2, ZnMn2O4 and ZnMnO3 were synthesised as nanocrystalline powders. Noticeably, the optimised route proved to be effective in stabilising the exotic polymorph cubic spinel ZnMnO3 in pure form. This is particularly notable, as very few records concerning this compound are available in the literature. The compounds were fully characterised from compositional, structural, morphological and magnetic points of view.
Ključne besede: nanostructured manganites, low temperature wet chemistry synthesis
Objavljeno v RUNG: 28.03.2017; Ogledov: 4247; Prenosov: 0
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37.
The CITIUS light source
Sandra Gardonio, Giovanni De Ninno, Barbara Ressel, 2013, objavljeni povzetek znanstvenega prispevka na konferenci

Ključne besede: femtosecond laser source, time resolved photoemission spectroscopy, correlated electron materials
Objavljeno v RUNG: 06.05.2014; Ogledov: 6974; Prenosov: 37
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