Phosphorus and cobalt codoped TiO₂ nanomaterial was successfully prepared by single step sol-gel method by doping different weight percentages of dopants concentrations into TiO₂ lattice. The co-doped TiO₂ samples were characterized to confirm the structural and morphological changes in TiO₂ crystal lattice by using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), transmission electron microscopy (TEM), UV-visible diffuse reflectance spectroscopy (UV-vis. DRS), X-ray photo electron spectroscopy (XPS), Brunauer-Emmmett-Teller surface area analyzer (BET) and Fourier transform infrared spectroscopy (FT-IR). The characterization results revealed that all the codoped samples show anatase phase, nanoparticle (5.8 nm) and narrow band gap (2.54 eV). These results enhance the photocatylytic activity of codoped TiO₂ in visible light for the degradation of Fast Green dye within 60 min.

Keywords: Photocatalysis; Sol-Gel Method; Fast Green; Co-Doping;