Production of porous spheres based on Alumina/Calcium carbonate coated with silver nanoparticles

Reference	Presenter	Authors (Institution)	Abstract
17-008	Ligia Maria Manzine Costa	Costa, L.M.(Universidade de São Paulo); Poiani, A.B.(Universidade de São Paulo); Salomão, R.(Universidade de São Paulo);	Porous spheres of Alumina/CaCO3 were produced by the gel casting method using sodium alginate as a crosslinking agent. The spheres obtained were approximately 2.3 mm in size. Subsequently, they were submitted to chemical treatment to form silver nanoparticles on their surface, in this way a formation of a layer of 100 micrometers containing silver nanoparticles was observed. The beads were heat treated at 1500 ° C resulting in the formation of an alumina shell and the calcium hexaluminate in its core. The morphology and chemical characterization of the samples were determined through SEM / EDX. In this way, this material without heat treatment can be used in anti-bacterial filtration systems and after heat treatment such as grinding balls, catalysts support, hot air filters.
<< Back