COPPER MICROPARTICLES (MPS Cu) AND CORE-SHELL COPPER@SILVER MICROPARTICLES (MPs Cu@Ag) OBTAINED BY MEANS OF A BUTANOL-GLYCEROL MIXTURE

• Autores: Echevarria Muñoz, Jezabel, Rengifo Maravi, Joel, Guzmán Duxtan, Aldo
• Formato: artículo
• Fecha de Publicación: 2023
• Institución: Sociedad Química del Perú
• Repositorio: Revista de la Sociedad Química del Perú
• Lenguaje: español
• OAI Identifier: oai:rsqp.revistas.sqperu.org.pe:article/429
• Enlace del recurso: https://revistas.sqperu.org.pe/index.php/revistasqperu/article/view/429
• Nivel de acceso: acceso abierto
• Materia: Polyol; Microwave; Wet grinding; Ultrasound; Transmetalation; Poliol; Microondas; Molienda húmeda; Ultrasonido; Transmetalación

In this study, the synthesis of Cu MPs and Cu@Ag MPs was carried out using the microwave-assisted polyol method. The reduction of copper acetylacetonate was carried out in a binary mixture of butanol-glycerin solvents with glycerol monostearate (GMS) by microwave heating; accompanied by wet grinding and ultrasonic pulses. The suspension of Cu MPs was coated with silver through galvanic deposition and the transmetalation reaction using a silver nitrate solution, at room temperature and under darkness, thus obtaining Cu@Ag MPs. All microparticles were characterized with XRD, SEM and EDX techniques. With the SEM results, it is deduced that the Cu MPs adopted different morphologies and sizes depending on the butanol-glycerin proportions used during the synthesis, with the butanol-glycerin proportion being 2:3, which allowed obtaining Cu MPs with a more crystalline morphology. average diameter of 3.52 μm. Likewise, the Cu@Ag MPs turned out to be amorphous, forming clusters with average diameters of 0.33μm, 0.52 μm and 0.83 μm when the molar ratios of Cu:Ag 1:1, 2:1 and 3:1 were used. , respectively. The 1:1 Cu@Ag MPs had a more homogeneous coating compared to the others.