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Studies on synthesis and characterization of Co3O4 powders for CO oxidation

D. BERGER1,2,* , F. MORFIN2, C. MATEI1, J. C. VOLTA2

Affiliation

  1. "Politehnica" University of Bucharest, 1 Polizu street, 011061, Bucharest, Romania
  2. Institut de Recherches sur la Catalyse, CNRS, 2 avenue Albert Einstein, 69626 Villeurbanne, France

Abstract

Co3O4 nanopowders were synthesised by thermal treatment of different precursors obtained by precipitation at constant pH value using cobalt nitrate or sulphate as cobalt salt and ammonia or potassium hydroxide as precipitating agent. The effect of different parameters as reaction and calcination temperature, type of precipitating agent and cobalt salt on Co3O4 crystallite size and specific surface area values is discussed. Co3O4 samples with the highest surface area values were tested in the CO oxidation..

Keywords

Co3O4, CO oxidation, Precipitation method, Nanopowders.

Submitted at: Nov. 14, 2006
Accepted at: May 15, 2007

Citation

D. BERGER, F. MORFIN, C. MATEI, J. C. VOLTA, Studies on synthesis and characterization of Co3O4 powders for CO oxidation, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 5, pp. 1540-1545 (2007)