Obtaining copper oxide particles at low cost to be applied in contaminated aqueous medium
Obtención de partículas de óxido de cobre a bajo costo, para ser aplicadas en medio acuoso contaminado
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Objective: This paper presents a methodology in the preparation of particles of copper oxide (CuO) by low-cost methods of preparation, such as polymeric precursors and solvent evaporation, aiming to be applied in contaminated aqueous media. Method: the samples were prepared by different routes of synthesis and subjected to different calcination temperatures. Results: Samples were obtained by Route 1: modified Pechini method (polymeric precursors), changing concentrations and with addition of HNO3 and NH4OH to regulate pH, and Route 3: Pechini method without pH regulation. Calcination allowed to obtain CuO samples in the monoclinic structure and morphology changes depending on the method. Conclusion: Route 3 or Pechini method without regulating the pH showed the best results with monoclinic structure and the lower particle size, which allows to predict a good photocatalytic performance in the degradation of pollutants.
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