Catalytic behavior and antibacterial/antifungal activities of new MNPs/zeolite@alginate composite beads.

In this paper, a new family of composite materials was prepared based on calcium alginate and metal nanoparticle-loaded zeolite omega. Different types of metal nanoparticles (MNPs), namely Cu, Co and Fe, were loaded onto zeolite omega to test the performance of the resulting metal/zeolite@alginate composites towards the catalytic reduction of methylene blue dye. To examine their application field as broadly as possible, these composite beads were also tested as antibacterial and antifungal agents against several types of bacteria.

Composites beads based on FeO@MCM-41 and calcium alginate for enhanced catalytic reduction of organic dyes.

This work concerns the preparation of composite beads based on calcium alginate and FeO@MCM-41. In the first step, the material FeO@MCM-41 was prepared mechanically using several FeO contents, then was encapsulated by calcium alginate as a cross-linking matrix to give the composites MC@CA(x). The composite beads were used as catalysts for the reduction of MB and OG dyes in a simple system.