Stoichiometric chrysotile tubular nanocrystals have been synthesized as possible starting materials for applications toward nanotechnology, and as a standard reference sample for the investigation of the molecular interactions between chrysotile, the most utilized asbestos, and biological systems. Chrysotile nanocrystals have been synthesized under controlled hydrothermal conditions, and have been characterized by chemical, morphological, structural, spectroscopic and microcalorimetric analyses. They show a constant cylinder-in-cylinder morphology constituted by two or three concentric subunits. Each single nanocrystal has a tubular shape of about 49 +/- 1 nm in outer maximum diameter, and a hollow core of about 7 +/- 1 nm. Structural investigation carried out on an Xray powder pattern allowed to improve the structural model proposed for chrysotile mineral samples. Synthetic chrysotile crystallizes in the monoclinic Cc space group with a= 0.5340(l) nm, b = 0.9241(l) nm, and c = 1.4689(2) nm, beta = 93.66(3)degrees.
Tubular-shaped stoichiometric chrysotile nanocrystals / G., Falini; E., Foresti; M., Gazzano; GUALTIERI, Alessandro; M., Leoni; IG, Lesci; N., Roveri. - In: CHEMISTRY-A EUROPEAN JOURNAL. - ISSN 0947-6539. - STAMPA. - 10:12(2004), pp. 3043-3049. [10.1002/chem.200305685]
Tubular-shaped stoichiometric chrysotile nanocrystals
GUALTIERI, Alessandro;
2004
Abstract
Stoichiometric chrysotile tubular nanocrystals have been synthesized as possible starting materials for applications toward nanotechnology, and as a standard reference sample for the investigation of the molecular interactions between chrysotile, the most utilized asbestos, and biological systems. Chrysotile nanocrystals have been synthesized under controlled hydrothermal conditions, and have been characterized by chemical, morphological, structural, spectroscopic and microcalorimetric analyses. They show a constant cylinder-in-cylinder morphology constituted by two or three concentric subunits. Each single nanocrystal has a tubular shape of about 49 +/- 1 nm in outer maximum diameter, and a hollow core of about 7 +/- 1 nm. Structural investigation carried out on an Xray powder pattern allowed to improve the structural model proposed for chrysotile mineral samples. Synthetic chrysotile crystallizes in the monoclinic Cc space group with a= 0.5340(l) nm, b = 0.9241(l) nm, and c = 1.4689(2) nm, beta = 93.66(3)degrees.
Pubblicazioni consigliate
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris
