In this work, metal-ceramic nanocomposites were obtained through short (up to 2 h) thermal treatments at relatively moderate temperatures (750-800 degrees C) under a reducing atmosphere, using Fe-exchanged zeolite A as the precursor. The as-obtained materials were characterized by X-ray powder diffraction analysis, N-2 adsorption at -196 degrees C, and high-resolution transmission electron microscopy. The results of these analyses showed that the nanocomposites consisted of a dispersion of metallic Fe nanoparticles within a porous ceramic matrix, mainly based on amorphous silica and alumina. These nanocomposites were magnetically characterized, and their magnetic response was studied. Finally, the obtained metal-ceramic nanocomposite materials were used in the separation of Escherichia coli DNA from a crude cell lysate. The results of the DNA separation experiments showed that the obtained materials could perform this type of separation.
Preparation and characterization of magnetic and porous metal-ceramic nanocomposites from a zeolite precursor and their application for DNA separation / Pansini, Michele; Dell'Agli, Gianfranco; Marocco, Antonello; Netti, Paolo Antonio; Battista, Edmondo; Lettera, Vincenzo; Vergara, Paola; Allia, Paolo; Bonelli, Barbara; Tiberto, Paola; Barrera, Gabriele; Alberto, Gabriele; Martra, Gianmario; Arletti, Rossella; Esposito, Serena. - In: JOURNAL OF BIOMEDICAL NANOTECHNOLOGY. - ISSN 1550-7033. - 13:3(2017), pp. 337-348. [10.1166/jbn.2017.2345]
Preparation and characterization of magnetic and porous metal-ceramic nanocomposites from a zeolite precursor and their application for DNA separation
Netti, Paolo Antonio;Battista, Edmondo;
2017
Abstract
In this work, metal-ceramic nanocomposites were obtained through short (up to 2 h) thermal treatments at relatively moderate temperatures (750-800 degrees C) under a reducing atmosphere, using Fe-exchanged zeolite A as the precursor. The as-obtained materials were characterized by X-ray powder diffraction analysis, N-2 adsorption at -196 degrees C, and high-resolution transmission electron microscopy. The results of these analyses showed that the nanocomposites consisted of a dispersion of metallic Fe nanoparticles within a porous ceramic matrix, mainly based on amorphous silica and alumina. These nanocomposites were magnetically characterized, and their magnetic response was studied. Finally, the obtained metal-ceramic nanocomposite materials were used in the separation of Escherichia coli DNA from a crude cell lysate. The results of the DNA separation experiments showed that the obtained materials could perform this type of separation.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
