Arisma Nurul Fauziyah, Khorifathul Khoiriyah, Vindy Yurike Oktavia, Herlin Pujiarti, Joko Utomo
TiO2/ZnxNi1-xFe2O4 nanocomposites (x = 0; 0.2; 0.4; 0.6; 0.8; and 1) were synthesized using a co-precipitation method at annealing temperature of 600°C for 3 hours. X-ray diffraction pattern showed high percentage of anatase TiO2 phase and slight proportion of Zn-NiFe2O4 spinel ferrite phase. The lattice parameters in all samples are in the range a = b = 3.782-3.791 Å and c = 9.487-9.524 Å. Crystal size tends to decrease with the addition of Zn content between 11.34-15.64 nm. The results of SEM characterization showed that the particle size of the sample x = 0.2 and 0.8 were 95.9 nm and 110.8 nm, respectively. The FTIR spectra was measured at a wave number of 400-4000 cm-1. The vibration of metal ion with oxygen (M-O) occurred at wave number of 416.62 cm-1, which confirmed the structure of spinel in the TiO2/ZnxNi1-xFe2O4 nanocomposites. The presence of the titanium dioxide phase was confirmed by wave number 671.64 cm-1 in the FTIR spectrum which is the Ti-O-Ti vibration. The energy gap of TiO2/ZnxNi1-xFe2O4 nanocomposites decreased with the addition of Zn content in the range of 2.77-3.01 eV. The value obtained is lower than the band gap energy of pure TiO2. The highest degradation of RhB dye was 35.94% with a degradation rate of 0.002 minutes-1 which was found on the sample x = 0.2 for 120 minutes. © 2025 American Institute of Physics Inc.. All rights reserved.
Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Negeri Malang, Jl. Semarang 5, Malang, 65146, Indonesia
