Método simplificado para deposição de partículas de Óxido de prata em superfície de espuma de vidro via sonoquímica

Abstract

In this work a study is presented on the deposition of silver oxide in glass foams using ultrasonic bath. To meet the objectives, the appropriate conditions were studied to favor the addition of the oxide particles in the foam matrix. The parameters indicative of deposition were determined by X-ray diffraction analysis (XRD), chemical microanalysis by X-ray dispersive energy levels (EDS), X-ray fluorescence (FRX) and field emission scanning electron microscopy (FEG-MEV). The determination of the best deposition conditions was performed through factorial planning and surface response analysis. The analyzes carried out showed that the use of sonochemical allowed the deposition of silver oxide on the external and internal surfaces of glass foams. The results obtained in the factorial design indicate that the temperature and the mass of silver oxide directly influence the deposition. Evaluating the results of the response surface, it was determined that the best conditions for deposition were: temperature between 50 to 59 ºC, mass of Ag2O above 0,04 g and ultrasound time of 30 minutes. These results meet the objective of the work and reinforce the application of the foams, since the use of the deposition method attributed new advanced properties to glass foams.