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Studio dei livelli di adsorbimento del Rosso Congo mediante nanoparticelle di magnetite
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ISBN10: 6208602521
ISBN13: 9786208602529
Publisher: Edizioni Sapienza
Published: Jan 28 2025
Pages: 72
Weight: 0.24
Height: 0.17 Width: 6.00 Depth: 9.00
Language: Italian
ISBN13: 9786208602529
Publisher: Edizioni Sapienza
Published: Jan 28 2025
Pages: 72
Weight: 0.24
Height: 0.17 Width: 6.00 Depth: 9.00
Language: Italian
Le nanoparticelle di ossido di ferro sono particelle di ossido di ferro con diametro compreso tra circa 1 e 100 nanometri. Le due forme principali sono la magnetite (Fe3O4) e la sua forma ossidata maghemite (γ-Fe2O3). Hanno suscitato grande interesse per le loro proprietà superparamagnetiche e le loro potenziali applicazioni in molti campi. Tra i vari metodi di sintesi chimica degli ossidi metallici, il processo sol-gel offre diversi vantaggi rispetto ad altri metodi, tra cui una buona omogeneità , un basso costo e un'elevata purezza. In questa tesi, le nanoparticelle di magnetite pura sono state sintetizzate con successo attraverso il metodo sol-gel combinato con la ricottura alla temperatura di 200-400 ᵒC utilizzando nitrato ferrico e glicole etilenico come materiali di partenza. Per ottenere le proprietà delle nanoparticelle sono stati utilizzati i metodi di diffrazione a raggi X (XRD), UV/VIS, TG/DTA, tecniche di caratterizzazione SEM e TEM, EDS, Particle size Analyzer (DLS) e VSM. Una delle applicazioni delle nanoparticelle di Fe3O4 è il trattamento delle acque. Il Rosso Congo è un colorante disazo anionico a base di benzidina. È tossico per molti organismi. Viene utilizzato in diverse industrie. Le nanoparticelle di magnetite sono state impiegate per la rimozione del CR e utilizzate come efficace adsorbente nel trattamento delle acque reflue.
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