https://doi.org/10.5061/dryad.280gb5mwg

Nanosized ferrites Mg*x*Zn1-x*Fe2O4 (0 < *x *<1) were effectively synthesized using a wet ferritization method. The obtained spinel nanoparticles were then treated with flavonoids (Flv) extracted from agricultural waste of *Punica granatum L. and Allium cepa L. Various characterization techniques such as FTIR, XRD, DTA-TGA, VSM, FE-SEM, TEM, EDX, and BET were utilized to analyze the surface morphology, magnetic properties, and elemental composition. The X-ray diffractograms revealed that the synthesized MgxZn1-xFe2O4 (MZFO) nanoparticles displayed a uniform cubic spinel structure, indicating the presence of a single phase. Morphological analysis revealed two distinct categories of MZFO nanoparticles: flower-shaped and plate-shaped particles. The attendance of Mg, Zn, O, Fe, and C elements in both MZFO and Flv/MZFO samples was confirmed by EDX analysis. TEM analysis further confirmed that each particle of the modified MZFO sample was a single crystal with an average particle size of 22 nm. Additionally, the modified MZFO nanoparticles exhibited a weight loss of 39.17% due to surface modification. Notably, the modified MZFO nanoparticles displayed remarkable superparamagnetic behavior with a saturation magnetization of up to 41.875 emu.g-1. BET analysis demonstrated that the Flv/MZFO nanoparticles possessed a mesoporous structure with a total pore volume of 0.1349 cm3/g, an average pore size of 17.044 nm, and a specific surface area of 31.655 m2/g. The conjugated Flv/MZFO nanoferrites exhibited significant antibacterial efficacy, with inhibition zones of 7 mm and 8 mm against Gram-positive and Gram-negative bacteria, respectively. 

Description of the data and file structure

Details for each dataset are provided in the README file.

Datasets included:

1) Brunauer-Emmett-Teller (BET) Data:

The BET data analysis determines the porosity and surface area of the Flv/MZFO nanoparticles.

2) Energy Dispersive X-ray (EDS) Data:

The quantitative composition analysis of the fabricated Flv/MZFO nanocomposite determined through elemental analysis (cobalt (3Coka), iron (3Feka), oxygen(3Oka), zinc (3Znka), and combined of all elements (3Combine) using an EDX detector.

3) Field Emission Scanning Electron Microscopy (FESEM) Images:

The morphology and shape of the synthesized Flv/MZFO nanoparticles characterized using FE-SEM from four spots of sample (four images).

4) Transmission Electron Microscopy (TEM) Images:

The size, shape, and arrangement of the synthesized MgZnFe2O4 particles using TEM analysis from six spots of sample (six images).

5) Thermogravimetric Analysis (TGA) Data:

Determining the thermal stability of the Flv/MZFO nanoparticles using TGA.

6) Vibrating Sample Magnetometer (VSM) Data

The magnetization curves of the Flv/MZFO NP sample before and after fabrication (image and excel data file).

7) X-ray Diffraction (XRD)

Determining crystallinity in structure and phase purities of as-synthesized spinel ferrites (Flv/MZFO nanoparticles) using XRD (image and excel data file).

Sharing/Access information

Data was derived from the following sources:

• These datasets were collected in Koya University and Tishk International University-Erbil (2023).