The present disclosure relates to dressings for wounds, methods of preparing thereof and methods of using thereof. Also, the present disclosure relates to a wound dressing comprising: bio-cellulose； and silver nanoparticles, wherein the concentration of silver nanoparticles is about 1000 μg/100 cm2 or less or about 1000 μg/cm3 or less, and wherein the silver nanoparticles have a localized surface Plasmon resonance maxima of about 600 nm to about 800 nm.
