Cotton decorated with CuO-Ag and CuO-Ag-AgBr NPs via an in-situ sacrificial template approach and their antibacterial efficiency.

Cotton fabrics decorated with CuO-Ag and CuO-Ag-AgBr NPs have been prepared using chemically immobilized CuO NPs as sacrificial templates. The objective is to prepare CuO-Ag heterostructures with Ag being intimately in contact with CuO NPs by galvanic replacement reactions without addition of any external reducing agent. Field emission scanning electron microscopy (FE-SEM), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) analysis were used to study the morphology and the chemical composition of the nanocomposites formed on the fabrics.

Hybrid nanocellulose decorated with silver nanoparticles as reinforcing filler with antibacterial properties.

Cellulose (Cel) nanofibrils (CNFs) produced by periodate oxidation of native cellulose fibers were functionalized with silver (Ag) nanoparticles (NPs) using Tollens' reaction. The morphology and chemical composition of the resulting Cel-Aghybrid nanofibrils were characterized using transmission electron microscopy (TEM), X-ray diffraction (XRD), as well as Fourier-transform infrared (FTIR) and UV-Vis spectroscopies. To check whether the hybridization with Ag affected the reinforcing potential of the CNFs, nanocomposite films based on an acrylic matrix filled with the as-prepared Cel-Ag nanofibrils at different contents were processed by film casting.