Fig. 2

A SEM images of PADM hydrogels (PADM) and AgNP–PADM hydrogels (AgNP–PADM) prepared using 20, 50, and 80 μg mL^− 1 AgNP solutions. PADM and AgNP–PADM hydrogels exhibited three-dimensional reticulated fiber structure. Aa, Ab, Ac, and Ad are magnified by 2000×. Ae, Af, Ag, and Ah are magnified by 15,000×. B Porosity calculated using ImageJ software for PADM and AgNP–PADM hydrogels prepared using 20, 50, and 80 μg mL^− 1 AgNP solutions. Be1, Bf1, Bg1, and Bh1 correspond to Ae, Af, Ag, and Ah, respectively. C Porosity of PADM and AgNP–PADM hydrogels prepared using 20, 50, and 80 μg mL^− 1 AgNP solutions. D EDS analysis of PADM and AgNP–PADM hydrogels prepared using 80 μg mL^− 1 AgNP solution. E Element mapping of AgNP–PADM hydrogels prepared using 80 μg mL^− 1 AgNP solution