Perovskite Titanates and Related Oxides

Perovskites have the general formula, ABX3, with SrTiCb being a prototype. They contain a framework structure containing comer-sharing Ti06 octahedra with the A cation in twelve-coordinate interstices.384,385 Several hundred oxides have this stmc 

More complex perovskites exist containing two different cations which may occupy either the A or B sites and many of these also have a layered structure. Two 

Entry number Title of paper Comments Reference 

2 Strontium Titanate Photoelectrodes. Efficient Photoassisted Electrolysis of Water at Zero Applied Potential. As above but the water photosplitting driven by light only with no external bias. Photoanode stability also confirmed as in the evolution of H2 and O2 in the correct 2 1 stoichiometric ratio. 287 

3 Photoelectrolysis of Water in Cells with SiTiCb Anodes. Maximum quantum efficiency at zero bias (10% at hv = 3.8 eV) found to be -an order of magnitude higher than TiCh. 388 

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