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Four kinds of Ce3+ exchanged montmorillonites (Ce/MMTs) were prepared by an ion-exchange reaction, and characterized with energy dispersive X-ray analysis (EDX), X-ray difference (XRD), X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM). The surface properties and antibacterial activity of Ce/MMTs were also investigated. The chemical compositions of Ce/MMTs were determined, and the cerium of Ce/MMTs was confirmed to be present as trivalent cerium state. The d001 basal spacings of Ce/MMTs were enlarged with the enhancement of the cerium contents, and the particles were formed with irregular shape. On increasing the Ce contents of Ce/MMTs, the special surface areas were decreased, but the total pore volumes and the average pore sizes were increased. The antibacterial activity of Ce/MMTs is increased with increasing the cerium contents, and 1.5 g/L of Ce/MMT-3 containing 11.46wt.% of curium could remove all the Staphylococcus aureus and more than 99.9% of the Escherichia coli within 24.0 h of contact. Moreover, Ce/MMTs displayed bactericidal activity.
Four kinds of Ce3 + exchanged montmorillonites (Ce / MMTs) were prepared by an ion-exchange reaction, and characterized with energy dispersive X-ray analysis (XRD), X-ray photoelectron spectroscopy scanning electron microscopy (SEM). The surface properties and antibacterial activity of Ce / MMTs were also investigated. The Chemical compositions of Ce / MMTs were determined, and the cerium of Ce / MMTs was confirmed to be present as trivalent cerium state. The d001 On basal spacings of Ce / MMTs were enlarged with the enhancement of the cerium contents, and the particles were formed with irregular shape. On increasing the Ce contents of Ce / MMTs, the special surface areas were decreased, but the total pore volumes and the average The antibacterial activity of Ce / MMTs is increased with increasing the cerium contents, and 1.5 g / L of Ce / MMT-3 containing 11.46 wt.% of curium could remove all the Staphylococcus aureus and more than 99.9% of the Es cherichia coli within 24.0 h of contact. Moreover, Ce / MMTs displayed bactericidal activity.