R. Oktafianti, N.P. Putri, A.M. Riska, D.H. Kusumawati
Titanium dioxide (TiO2) was prepared using the green synthesis method to investigate its photocatalytic activity in degrading methyl orange. The properties of TiO2 were analyzed using XRD to ascertain the phase and crystal size, SEM-EDX to evaluate the morphology and composition, and UV-Vis to measure the absorbance and bandgap energy. The study was conducted by varying the methyl orange (MO) solution concentration and ultraviolet (UV) irradiation time. The results indicated that the maximum degradation efficiency after 180 minutes was achieved at a concentration of methyl orange solution of 5 ppm with a value of 92.92%, while at concentrations of 15 ppm and 30 ppm, the degradation efficiency was 90.33% and 73.77%. Therefore, TiO2 has the potential to be an effective photocatalyst in the application of purifying water contaminated with dyes. © 2024 Institute of Physics Publishing. All rights reserved.
Physics Department, Universitas Negeri Surabaya, Surabaya, Indonesia
