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Nanoparticelle sostenibili per applicazioni emergenti
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ISBN10: 6209951880
ISBN13: 9786209951886
Publisher: Edizioni Sapienza
Published: Apr 20 2026
Pages: 60
Weight: 0.21
Height: 0.14 Width: 6.00 Depth: 9.00
Language: Italian
ISBN13: 9786209951886
Publisher: Edizioni Sapienza
Published: Apr 20 2026
Pages: 60
Weight: 0.21
Height: 0.14 Width: 6.00 Depth: 9.00
Language: Italian
Questo libro esplora la sintesi verde ed ecologica di nanoparticelle d'argento utilizzando un estratto vegetale, che contiene acido ascorbico che agisce sia come agente riducente sia come agente tappante. Aggiungendo questo estratto a soluzioni di nitrato d'argento, i ricercatori hanno osservato un netto cambiamento di colore verso il rosso vino dopo l'incubazione, segnalando la formazione di nanoparticelle attraverso la risonanza plasmonica superficiale. La caratterizzazione completa mediante spettroscopia UV-Vis, DLS (Dynamic Light Scattering) e microscopia elettronica a trasmissione (TEM) ha confermato la produzione di particelle d'argento sferiche e nano-cristalline con le dimensioni e la forma desiderate. La convalida strutturale ed elementare è stata ulteriormente fornita dalla diffrazione dei raggi X (XRD), che ha identificato le sfaccettature standard dell'argento, e dalla spettroscopia a raggi X a dispersione di energia (EDX), che ha verificato la composizione elementare. Infine, i test antibatterici condotti con il metodo della diffusione su disco hanno dimostrato che queste nanoparticelle sintetizzate biologicamente inibiscono efficacemente la crescita di batteri Gram-positivi e Gram-negativi, suggerendo un potenziale significativo per future applicazioni in medicina, nei tessuti e nell'elettronica avanzata.
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