Hydrogen evolution titanate

In some cases the oxidation-reduction potential is close to the potential at which another process, e.g., hydrogen evolution, can occur in this event both reactions will take place simultaneously. For example, reduction of the titanic-titanous system in hydrochloric acid commences at about + 0.05 volt, while in the same solution the reversible hydrogen potential is approximately zt 0.0 volt. It follows, therefore, that if a platinized platinum cathode, which has almost zero hydrogen overvoltage, is employed, reduction of the titanic ions and evolution of hydrogen will take place at the same time. The reduction eflSciency will then be small. If a high overvoltage cathode is employed, however,... 

Figure 30.2 Band diagram of nitrogen-doped strontium titanate for hydrogen evolution. (Reproduced with permission from Ref. [34]. Copyright 2014 Elsevier.)...

Maeda, K. (2014) Rhodium-doped barium titanate perovskite as a stable p-type semiconductor photocatalyst for hydrogen evolution under visible light. 

Fig. 6 Schematic representation of the morphology evolution and the formation process of sodium and hydrogen-titanate nanostructures during hydrothermal synthesis in the presence of alkali medium. Elaborated from the picture and schemes reported by Wu et al.219...

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