“…Stannic oxide-based nano-compounds, such as lanthanide stannate has been prepared by sol-gel, Pechini, solid-state reaction, complex precipitation, and hydrothermal methods [22]. Similarly, for the synthesis of stannate bases Ln2Sn2O7, numerous procedures have been proposed such as Pechini, aerosol pyrolysis, solidstate, hydrothermal way, and aerosol pyrolysis [23].Previously, combustion, co-precipitation, reverse micelle, sol-gel, solid-state processes have been established for the fabrication of BaSnO3 [24]. Moreover, the rare-earth-doped cerium oxide compounds have been formed through mechanochemical, Pechini, combustion, co-precipitation, and solvothermal techniques [25].…”