Water Cleavage by Visible Light

Colloidal Dispersions and Their Application to Water Cleavage by Visible Light... 

The primary target of studies on photocatalytic semiconductor suspensions has been water cleavage by visible light. Suspension-based photocatalytic processes are also useful for the removal of inorganic (metal ions) and organic pollutants, the reduction of CO2, the photodestruction of bacteria and viruses, and various organic reactions an example is the use of Pt-loaded CdS for the photocatalytic racemization of L-lysine [210]. 

M. Visca, M. Gratzel, Sustained water cleavage by visible light, J. Am. Chem. Soc. 103 (1981) 6324-6329. 

Dung DH, Serpone N, Gratzel M (1984) Integrated systems for water cleavage by visible-light - sensitization of TiCL particles by surface derivatization with ruthenium complexes. Helv Chim Acta 67 1012-1018... 

Graetzel, M. Dynamics of interfacial electron transfer reactions in colloidal semiconductor systems and water cleavage by visible light, Nato Asi Ser., Ser. C 1986, 174, 91. 

Efficient Water Cleavage by Visible Light in Colloidal Solutions of Bifunctional Redox Catalysts... 

Cyclic water cleavage by visible light was also achieved in electron relay free systems (48). In this case the fraction of sensitizer that Is absorbed onto the particle surface is photoactive and electron injection occurs directly from its excited state into the Ti02 conduction band. Using the surfactant ruthenium complex depicted in Figure 10, a quantum yield of 7% was obtained for the water splitting process. 

Figure 9. Cyclic water cleavage by visible light in the presence of Ru(bipy)i as a sensitizer and bifunctional redox catalyst as an electron relay.

Kiwi J, Borgarello E, Pellizzetti E, Visca M, Gratzel M (1980) Cyclic water cleavage by visible light drastic improvement of yield of H2 and O2 with bifunctional redox catalysts. Angew Chem Int Ed 19 646-648... 

In Situ Surface Electrochemistry Radioactive Labeling Interfacial Charge Transfer Reactions in Colloidal Dispersions and Their Application to Water Cleavage by Visible Light... 

---