This work focuses on a systematic method to produce Ag. Cu. and Ag/Cu metallic nanoparticles (MNPs) in situ assisted with ultrasound on cellulose paper. By tuning the concentration of AgNO3 and CuSO4 salt precursors and ultrasound time. https://www.shopwildwestes.shop/product-category/outerwear-womens-sweater/