We have developed new ruthenium complexes sensitizers for DSSC based on computational chemistry. Recently, we found that various valuable chemicals (hydrogen peroxide, hypochlorous acid, persulfate etc.) could be produced on oxide photoelectrodes with producing H2 on the counter electrode, as shown in Fig.2. Moreover, we have developed highly efficient photocatalysts for artificial photosynthesis reaction with redox mediators and low-cost H2 production combined with electrolysis, as shown in Fig.3.
Figure.1 Principles of (a) DSSC, (b) photoelectrode and (c) photocatalyst.
Figure. 2 Production of H2 and valuable chemicals using photoelectode.
Figure.3 Economical H2 production on photocatalysis-electrolysis hybrid system with redox mediator.