Biogenic surfactant mediated facile synthesis of visible light sensitized Zn/Mg co-doped TiO2 nanomaterials – a green approach: evaluation of photocatalytic activity by degradation of Amido Black 10B

Abstract Visible light-driven Zn and Mg co-doped TiO 2 nanomaterials were synthesized by varying dopant concentrations in presence of biogenic surfactant Sapindus emerginatus (biogenic extract) via the Sol-gel method have been successfully applicated to degradation Amido Black 10B (AB 10B), an exemplary anionic textile azo dye pollutant. This study explored potent capping properties extract encapsulating Zn/Mg . In a view assessing physical optical as-synthesized catalysts, various advanced instrumental techniques adopted. The Transmission Electron Microscopy Scanning analysis show formation small particle sizes (6.9 nm) pertaining surfactant-assisted (ZMT4S2). substitutional doping into framework substituting Ti 4+ ion encapsulation around catalyst was confirmed Fourier Transform-Infrared Spectroscopy (FTIR) spectral studies. surface area ZMT4S2 found be high (195 m g − 1 ) as compared with undoped (74 (1.00 wt%) / (0.25 (ZMT4) (132 ). red shift absorbance observed for all catalysts analyzed using UV-Vis-Diffuse Reflectance (UV-Vis-DRS) confirms showing less band gap 2.1 eV than other catalysts. Further electrical property studied Electrochemical Impedance Spectroscopy. results obtained from impedance Mott-Schotky plots reduced resistance electron hole recombination respectively. sensitivity towards visible light its energy measurement UV-Vis-DRS. anatase phase powder X-ray diffraction. composition wt% dopants revealed Energy Dispersive spectra agree well calculated value. slightly shifted frequency bands further Mg. characterization reports accounts effective AB (99%) taking place within 20 min irradiation time at optimized reaction parameters such best concentration ZMT4, dosage (100 mg L ), (10 solution pH 3.