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Nanocompositi di polianilina - Un approccio moderno

Nanocompositi di polianilina - Un approccio moderno

Tikaram Kose

72,08 €
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Editorial:
KS OmniScriptum Publishing
Año de edición:
2026
Materia
Química
ISBN:
9786630371338
72,08 €
IVA incluido
Disponible

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Sono stati sintetizzati in situ nanocompositi di polianilina conduttiva con vari metalli di transizione mediante ossidazione del complesso di anilina. È stato analizzato l’effetto delle nanoparticelle di CdS sulla conduttività elettrica della polianilina. I prodotti così ottenuti sono stati caratterizzati mediante FT-IR e microscopia elettronica a trasmissione. Diversi nanocompositi sono stati confrontati con i nanocompositi di polianilina-CdS. La banda di assorbimento FTIR a 3600-3500 cm⁻¹ ha confermato l’elevato grado di legame tra la polianilina e le nanoparticelle di CdS. La microscopia elettronica a trasmissione (TEM) ha mostrato che le particelle di CdS sono sferiche, con un diametro medio di 19 nm, e distribuite uniformemente nella matrice polimerica. L’intercalazione uniforme delle nanoparticelle di CdS determina un fenomeno di cooperazione tra la polianilina e le nanoparticelle; di conseguenza, le nanoparticelle di CdS hanno aumentato la conduttività elettrica del nanocomposito di polianilina a 6,50×10⁻² S/cm rispetto alla polianilina pura (10⁻¹⁰ S/cm); semiconduttori come il germanio (10⁻² S/cm) e il silicio (10⁻⁴ S/cm). La sua conduttività elettrica è risultata analoga a quella dei metalli semiconduttori esistenti. Questo dato è supportato da numerosi risultati sperimentali e prove di caratterizzazione.

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