Gemini surfactant assisted synthesis of mesoporous Mn/Mg bimetal doped TiO2 nanomaterial: characterization and photocatalytic activity studies under visible light irradiation

Abstract The present work mainly aimed to synthesize different weight percentages (0.25–1.00 wt%) of Manganese (Mn 2+ ) and Magnesium (Mg bimetal ions doped TiO 2 nanomaterial assisted with (5–15 Gemini surfactant (GS) using sol-gel method. undoped photocatalysts were characterized by X-ray Diffraction, Scanning Electron Microscopy, Energy Dispersive Spectroscopy, Fourier Transform Infrared Spectroscopy (FT-IR), UV-Visible Diffused Reflectance Transmission Brunauer-Emmett-Teller surface area analyzer, Photoluminescence Spectroscopy. Characterization results revealed that mesoporous multi-particle anatase nanoparticles a narrowed band gap, small particle size, high formed due the combined effect Mn /Mg doping effective encapsulation GS over initially nanoparticles. elemental composition 0.25 wt% 1.00 Mg in presence 10 (after calcination) both metal dopants along Ti O their chemical interactions further confirmed FT-IR results. photocatalytic activity these catalysts was assessed degradation Methyl Red visible light irradiation. To understand reaction parameters on nanocatalysts such as dopant concentration, catalyst dosage, solution pH, initial dye concentration investigated optimized achieve best performance. photoluminescence conclude OH radicals are crucial reactive species responsible for oxidative Red.