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Spherical Particles of Pure and Manganese Doped Zinc Oxide and Zinc Hydroxicarbonate

Published online by Cambridge University Press:  15 February 2011

Cleidiane G Zampronio ,
Marian R. Davolos ,
Elizabeth B. Stucchi  and
Miguel Jafelicci Jr
Cleidiane G Zampronio
Affiliation:
São Paulo State University-LUnesp, Instituto de Quimica, 14800-900 Araraquara(SP), Brasil.
Marian R. Davolos
Affiliation:
São Paulo State University-LUnesp, Instituto de Quimica, 14800-900 Araraquara(SP), Brasil.
Elizabeth B. Stucchi
Affiliation:
São Paulo State University-LUnesp, Instituto de Quimica, 14800-900 Araraquara(SP), Brasil.
Miguel Jafelicci Jr
Affiliation:
São Paulo State University-LUnesp, Instituto de Quimica, 14800-900 Araraquara(SP), Brasil.
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Abstract

Pure and manganese doped zinc hydroxicarbonate are precursors for materials based on zinc oxide with electrical and luminescent properties. This paper reports on investigation of the effect of chloride and sulfate anions in the morphology of pure and doped precursors obtained by aging diluted zinc salt solutions in presence of urea, and their thermally decomposed products Characterization was carried out by XRI), IR and SEM techniques. Hydrozincite Zn5(OH)6(CO3)2 and zincite ZnO with spherical shaped particles of 5–10 ptm were obtained independent of anion used Moreover, in a chloride medium the spheres are organized in an arrangement of acicularly crystallized units as spherulitic aggregates, and in sulfate medium porous spherical particles were observed In addition, there is a good topotaxic relationship between the precursor and oxide

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 372: Symposium W1 – Hollow and Solid Spheres and Microspheres--Science and Technology , 1994 , 69
Copyright
Copyright © Materials Research Society 1995

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