Dextran hydrogel was prepared by the crosslinking reaction of dextran and N, N-methylenebisacrylamide in aqueous sodium hydroxide aqueous solution. Highly stable and uniformly distributed silver nanoparticles have been prepared using these hydrogel networks as a carrier via in situ reduction of silver nitrate without the addition of any reducing agent. The spherical silver nanoparticles with diameters of 20-30 nm were found to adopt a face centered cubic structure. The hydrogel hybrid with silver nanoparticles can be effectively employed as antibacterial and catalytic materials.

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