COPPER FERRITE NANOPARTICLES: SYNTHESIS AND STUDY OF THEIR PHOTOCATALYTIC ACTIVITY

Magnetic copper ferrite (II) nanoparticles are promising materials for biomedical, electronic and photocatalytic applications. In this work, homogeneous spherical CuFeO nanoparticles with a size of 18.3 ± 0.4 nm and a band gap width of 2.37 eV were obtained by anion-exchange resin precipitation using AV-17-8 in OH form in the presence of dextran-40. The photocatalytic activity of the obtained material was studied on the example of photodegradation of a widely used anionic dye – indigo carmine in the presence of sacrificial reagents: sodium citrate, carbonate and hydrocarbonate, hydrogen peroxide. The effectiveness of the joint application of electron donors - sodium hydrocarbonate and citrate – in reducing the probability of recombination of photogenerated holes and electrons has been demonstrated. The kinetic parameters of the process were determined (pseudo-zero order, = 3.6 × 10 mol/(l × min), = 75.8 ± 2.3 min) and its mechanism was elucidated. The intermediates of the photocatalytic oxidation of indigocarmine were determined by NMR.