1. Cerium(III) N,N-dibutylcarbamate as precursor to nanocrystalline cerium dioxide.
- Author
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Belli Dell’Amico, Daniela, De Sanctis, Massimo, Ishak, Randa, Dolci, Sara, Labella, Luca, Lezzerini, Marco, and Marchetti, Fabio
- Subjects
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CERIUM compounds , *CARBAMATES , *METAL ions , *NANOCRYSTALS , *CERIUM oxides , *CHEMICAL precursors , *HYDROLYSIS - Abstract
Nanostructured ceria has been prepared in mild conditions by hydrolysis of the N , N -dibutylcarbamato complex of cerium(III), [Ce(O 2 CNBu 2 ) 3 ], obtained by lanthanide extraction from aqueous solution into heptane containing CO 2 saturated NHBu 2 . In dependence of the hydrolysis conditions, cerium(III) carbonates or hydroxocarbonate (characterized by IR, XRD and metal content) were obtained. Thermal treatment of these products at relatively low temperature (200 °C) yielded CeO 2 in the form of a light yellow powder. The structure and morphology of the samples were studied by TEM, FESEM and XRD studies. The medium crystallite dimensions, estimated by TEM, appear to be of a few nanometers. Ceria with smaller medium crystallite dimensions was obtained by increasing the amine concentration in the course of the hydrolysis process. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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