Microstructural characterization of nanocrystals of ZnO and CuO obtained from basic salts
1993; Elsevier BV; Volume: 63-65; Linguagem: Inglês
10.1016/0167-2738(93)90142-p
ISSN1872-7689
AutoresO. García-Martínez, R.M. Rojas, E. Vila, J. L. Martı́n de Vidales,
Tópico(s)X-ray Diffraction in Crystallography
ResumoZnO and CuO powders have been obtained by reacting β-Zn(OH)Cl, Zn5(OH)8Cl2·H2O and γ-Cu2(OH)3Cl with n-butyl-amine at room temperature. Microstructural characterization of both ZnO and CuO oxides have been carried out by X-ray powder diffraction, using the Rietveld method and convolutive X-ray line broadening analysis. Results indicate very small crystallite sizes: <D>v,h00=79 Å and <D>v,00l=39 Å for ZnO obtained from β-Zn(OH)Cl, <D>v,h00=102 Å and <D>v,00l=105 Å for ZnO from Zn5(OH)8Cl2·H2O and <D>v,hkl=115 Å for CuO. ZnO and CuO nanocrystals are slightly microstrained. TEM st udies confirms the crystallite size and morphology obtained from X-ray peaks analysis.
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