Modification of F-Doped TiO2 Nanorods with Rgo for Rhodamine B Photodegradation

TiO₂-based combination materials have been developed to enhance photodegradation performance. The combination of structural engineering modifications of nanorods, F atoms doping and composites with rGO was able to eliminate the problems that occur in photocatalyst material. The structural engineering of nanorods increases the surface area of TiO₂ so the interaction between dye molecules and photocatalyst also increases. Then, the presence of F atoms in the TiO₂ crystal lattice caused defects that allow the red shift in the UV-Vis wavelength range. The absorption shift was known from the characterization of the UV-Vis spectrophotometer. The rGO material is able to avoid recombination rate that often occur in photocatalytic processes. This material has a high surface area and good electronic conductivity so that can capture electrons (e^-) which are separate from holes (h⁺). The formation of TiO₂-based combination materials was characterized by XRD, SAA, SEM and FTIR. Then, the photodegradation activity test was carried out on Rhodamine B with a time variation of 0, 30, 60, 90 and 240 minutes. The combination of modification of TiO₂-based photocatalyst material was able to enhance photodegradation performance compared to TiO₂ P25.