Electrical and Photocatalytic Properties of Nano Fe 0.1 Zn 0.9 Mn 2 O 4 Spinel Structures

Nanosized Fe0.1Zn0.9Mn2O4 particles were prepared by hydrothermal method in absence and presence of surfactants. Transmission electron microscopy (TEM), scanning electron microscopy (SEM) and powder x-ray diffraction (XRD) techniques were employed fo r the characterization of the nanoparticles. Photocatalytic activity and electrical properties (DC- and AC-conductivity as well as dielectric constant) were studied. All samp les showed spinel crystal structure with crystallite sizes depending on the preparation conditions and lays in the range of 11- 63 n m. The samp les showed semiconducting behavior and the electrical conduction was explained by hopping mechanism in wh ich the conduction occurred via electron exchange amongst transition metal ions situated on oct ahedral sites in spinel lattice. Influences of gamma radiat ion on the physical properties studied were investigated. Particle size, morphology, photocatalytic activity and electrical properties are influenced by the type of surfactant used in the preparation and affected by γ-irradiation process.