Multi-walled carbon nanotubes, MWCNTs, are stabilized thanks to the surface wrapping of single-strand DNA, ss-DNA; the resulting adducts are kinetically and thermodynamically stable Such entities build up nano-hybrids with titania, TiO2, nano-particles, in presence of surfactant as an adjuvant. The conditions leading to TiO2 adsorption onto ss-DNA/CNTs were investigated, by optimizing the concentration of adducts, nano-particles (NPs), and of the cationic surfactant (CTAB). Controlling the working conditions makes possible to get homogeneously organized hybrids. Characterization by DLS, electro-phoretic mobility, SEM and AFM clarified the surfactant-assisted association modes between adducts and CTAB-functionalized TiO2. Nano-particles’ clustering onto DNA-wrapped adducts gives hybrids trough electrostatic interactions. Surface coverage by TiO2 is significant and homogeneous. It is expected that the reported hybrids can be useful for applications in heterogeneous catalysis. © 2016
Hybrid nano-composites made of ss-DNA/wrapped carbon nanotubes and titania / Romio, Martina; La Mesa, Camillo. - In: COLLOIDS AND SURFACES. B, BIOINTERFACES. - ISSN 0927-7765. - STAMPA. - 152:(2017), pp. 12-17. [10.1016/j.colsurfb.2016.12.011]
Hybrid nano-composites made of ss-DNA/wrapped carbon nanotubes and titania
La Mesa, Camillo
2017
Abstract
Multi-walled carbon nanotubes, MWCNTs, are stabilized thanks to the surface wrapping of single-strand DNA, ss-DNA; the resulting adducts are kinetically and thermodynamically stable Such entities build up nano-hybrids with titania, TiO2, nano-particles, in presence of surfactant as an adjuvant. The conditions leading to TiO2 adsorption onto ss-DNA/CNTs were investigated, by optimizing the concentration of adducts, nano-particles (NPs), and of the cationic surfactant (CTAB). Controlling the working conditions makes possible to get homogeneously organized hybrids. Characterization by DLS, electro-phoretic mobility, SEM and AFM clarified the surfactant-assisted association modes between adducts and CTAB-functionalized TiO2. Nano-particles’ clustering onto DNA-wrapped adducts gives hybrids trough electrostatic interactions. Surface coverage by TiO2 is significant and homogeneous. It is expected that the reported hybrids can be useful for applications in heterogeneous catalysis. © 2016File | Dimensione | Formato | |
---|---|---|---|
Romio_Hybrid nano-composites_2017.pdf
solo gestori archivio
Note: https://www.sciencedirect.com/science/article/pii/S0927776516308487?via=ihub
Tipologia:
Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza:
Tutti i diritti riservati (All rights reserved)
Dimensione
1.16 MB
Formato
Adobe PDF
|
1.16 MB | Adobe PDF | Contatta l'autore |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.