Improved Photolysis of Water from Ti Incorporated Double Perovskite Sr2FeNbO6Lattice

The Ti incorporation at Fe-site in the double perovskite lattice of (SFNO) system is studied. The Ti concentration optimization yielded an efficient photocatalyst. At an optimum composition of Ti as x = 0.07 in , the photocatalyst exhibited 2 times the quantum yield for photolysis of in presence of , than its undoped counterpart under visible light (). Heavily Ti-doped lattice exhibited poor photochemical properties due to the existence of constituent impurity phases as observed in the structural characterization, as well as deteriorated optical absorption. The higher electron-density acquired by n-type doping seem to be responsible for the more efficient charge separation in (0.05