Effects of silver in lanthanum zinc ferrite nanocrystallites of Ag_xCo_0.5−xZn_0.5Fe_1.95La_0.05O₄/5% G (x = 0, 0.01, 0.05, 0.1, 0.25, 0.5) on corecivity, antimicrobial, and the MDA-MB-231 breast cancer cell

The sol-gel auto-composition approach was used to produce Ag_xCo_0.5−xZn_0.5Fe_1.95La_0.05O₄/5% G (x = 0, 0.01, 0.05, 0.1, 0.25, 0.5 (nanocomposites. Some techniques for characterizing the composite structure such as XRD, SEM, EDX, HR-TEM, SAED, FTIR, Raman, and electron mapping are performed. The structure is indexed to be cubic ferrite with space group Fd-3 m lattice parameters ranging from (8.3823–8.4139 A˚). The crystallite size was determined by four trends to be (27.57–41.72 nm), (30.88–62.18 nm), (80.70–103.6 nm), and (73.12 nm) by Scherer’s equation, W-H relation, SEM, and HR-TEM respectively. The strain ε and the line dislocation δ in crystalline and the theoretical density ρ_XRD are evaluated. EDX and elemental mapping revealed that all elements are present, indicating a good synthesis method. FTIR spectrum shows octahedron absorption band ʋ_octa at 399–462 cm^{− 1} and the tetrahedron band tetra at 590–624 cm^{− 1}. The force constant k_Oct. and k_Tet. octahedral and tetrahedral are determined to be 1.1854 × 10⁵ and 2.0249 × 10⁵ dyne/cm. The VSM approach estimates the magnetic characteristics of such materials to be ferromagnetic, with a saturation magnetization of 44.60 emu/g decreasing with increasing Ag concentration. The H_c is in 117.95 G, which decreases to 25% with increasing Ag content. Graphene-based nanoparticles offer unique mechanisms of action and broad-spectrum activity against bacteria and cancer cells. The effect of a novel and inventive chemical on gram-positive and gram-negative bacteria was examined. The compound exhibited a significant antibacterial effect on gram-positive bacteria, with a 60% activity compared to the control and 64% activity on gram-negative. Furthermore, the antifungal activity has been evaluated. It also exhibited a great cytotoxic activity on the MDA-MB-231breast cancer cell line, leading to decreased viability by 94.5%, 93.26% and 90.1% for Ag = 0.5, 0.1, and 0, respectively, compared with negative control. Continued study and development in this sector may result in the creation of novel treatment techniques for fighting bacterial infections and cancer. This paper provides a comprehensive study of the current knowledge regarding utilizing zinc, Silver, and cobalt in the context of their antibacterial and anticancer activities.