Highly ordered graphite oxide intercalation compounds (GOIC) and fully disordered graphite oxide exfoliated compounds (GOEC) have been obtained, for two quaternary phosphonium salts. X-ray diffraction patterns of both GOIC and GOEC maintain the 100 and 110 reflections of GO, clearly indicating the maintenance of in-plane GO order. For GOICs, few 00l reflections (with l up to 3) appear, indicating an increase with respect to GO of crystalline order as well as an increase of spacing between GO layers from 0.84 nm up to 1.40 nm. GOIC and GOEC have been compared for their kinetics of release in aqueous solutions of a phosphonium ion, being a known antibacterial agent. GOICs exhibit pH sensitive cation release, with zero order kinetics, which could be helpful for applications requiring triggered and constant supply of active ions.
Intercalation and exfoliation compounds of graphite oxide with quaternary phosphonium ions
MAGGIO, MARIO;ACOCELLA, MARIA ROSARIA;GUERRA, Gaetano
2015-01-01
Abstract
Highly ordered graphite oxide intercalation compounds (GOIC) and fully disordered graphite oxide exfoliated compounds (GOEC) have been obtained, for two quaternary phosphonium salts. X-ray diffraction patterns of both GOIC and GOEC maintain the 100 and 110 reflections of GO, clearly indicating the maintenance of in-plane GO order. For GOICs, few 00l reflections (with l up to 3) appear, indicating an increase with respect to GO of crystalline order as well as an increase of spacing between GO layers from 0.84 nm up to 1.40 nm. GOIC and GOEC have been compared for their kinetics of release in aqueous solutions of a phosphonium ion, being a known antibacterial agent. GOICs exhibit pH sensitive cation release, with zero order kinetics, which could be helpful for applications requiring triggered and constant supply of active ions.File | Dimensione | Formato | |
---|---|---|---|
GOIC_Phosphonium_manuscript_preprint_watermark.pdf
accesso aperto
Tipologia:
Documento in Post-print (versione successiva alla peer review e accettata per la pubblicazione)
Licenza:
Creative commons
Dimensione
1.48 MB
Formato
Adobe PDF
|
1.48 MB | Adobe PDF | Visualizza/Apri |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.