Investigating the specific absorption rate and antimicrobial activity of Mn_0.25Fe_2.75O₄/Ag ferrogel based on carboxymethyl cellulose/polyvinyl alcohol composite polymer

Carboxymethyl cellulose (CMC)/polyvinyl alcohol (PVA)-Mn 0.25 Fe 2,75 O 4 /Ag ferrogels was fabricated by using the freezing-thawing method. Mn 0.25 Fe 2.75 O 4 /Ag magnetic fillers of ferrogels were synthesized by using coprecipitation and chemical reduction methods. Characterization of Mn 0.25 Fe 2.75 O 4 /Ag nanopowders was carried out using X-ray Diffraction (XRD), Transmission Electron Microscopy (TEM), Vibrating Sample Magnetometer (VSM) instrument, and antimicrobial activity. At the same time, CMC/PVA-Mn 0.25 Fe 2.75 O 4 /Ag ferrogels were characterized by using magnetothermal instrument. The XRD pattern of the magnetite filler shows the peaks by the Fe 3 O 4 and Ag phases, respectively. The TEM image, there are Mn 0.25 Fe 2.75 O 4 and Ag with particle size distributions of 5–7 and 10–13 nm, respectively. The hysterical curve from VSM characterization shows a decrease in the value of magnetization saturation from 16.9 to 14.7 emu/g along with the addition of Ag material. Antimicrobial activity was tested using the agar diffusion method. Mn 0.25 Fe 2.75 O 4 /Ag samples showed very good results indicated by the widening of the zone of inhibition around the sample. Thus, CMC/PVA-Mn 0.25 Fe 2.75 O 4 /Ag ferrogels has the potential application to be applied in hyperthermia therapy as well as antimicrobial materials.