Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Nanocrystallization of CaCO(3) at solid/liquid interfaces in magnetic field: A quantum approach
Δημιουργός/Συγγραφέας:	[EL] Κεφαλάς, Αλκιβιάδης Κωνσταντίνος[EN] Cefalas, Alciviadis Constantinos Kobe, S. Drazic, G. [EL] Σαραντοπούλου, Ευαγγελία[EN] Sarantopoulou, Evangelia [EL] Κόλλια, Ζωή[EN] Kollia, Zoe Strazisar, J. Meden, A.
Εκδότης:	Elsevier BV, North-Holland
Τόπος έκδοσης:	AMSTERDAM
Ημερομηνία:	2008-08-30
Γλώσσα:	Αγγλικά
ISSN:	0169-4332
DOI:	10.1016/j.apsusc.2008.04.056
Περίληψη:	With the application of 1.2 T external magnetic field, 90% of CaCO(3) soluble molecules in water flow precipitate on stainless steel 316 solid/liquid interface in the form of aragonite/vaterite. The magnetic field increases locally the thermodynamic potentials at interface, favoring the formation of aragonite than calcite, despite the fact that the field-free ground electronic state of aragonite is situated higher than of calcite. A quantum mechanical model predicts that magnetic fluctuations inside the liquid can be amplified by exchanging energy with an external magnetic field through the angular momentum of the water molecular rotors and with the macroscopic angular momentum of the turbulent flow. The theoretical model predicts that the gain is higher when the magnetic field is in resonance with the rotational frequencies of the molecular rotors or/and the low frequencies of the turbulent flow and that aragonite concentration is increasing at 0.4 T in agreement with the experimental results. Contrary to calcite, aragonite binds weakly on flow surfaces; and hence the process has significant industrial, environmental and biological impact.
Τίτλος πηγής δημοσίευσης:	Applied Surface Science (formerly Known as Applications of Surface Science)
Τόμος/Κεφάλαιο:	254
Τεύχος:	21
Σελίδες:	6715-6724
Θεματική Κατηγορία:	[EL] Χημεία (Γενικά)[EN] Chemistry (General) [EL] Επιστήμη (Γενικά)[EN] Science (General) [EL] Τεχνολογία (Γενικά)[EN] Technology (General) [EL] Φυσική[EN] Physics
Λέξεις-Κλειδιά:	calcium carbonate turbulent flow scaling in magnetic field solid-liquid interface water nanocrystals calcite aragonite vaterite Chemistry, Physical Materials Science, Coatings & Films Physics, Applied Physics, Condensed Matter
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2008 Elsevier B. V. All rights reserved.
Ηλεκτρονική διεύθυνση περιοδικού (link) :	http://www.elsevier.com/locate/apsusc
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο