Hydrogen photoevolution

Nakato, Y., Yano, H., Nishiura, S., Ueda, T., and Tsubomura, H., Hydrogen photoevolution at p-type silicon electrodes coated with discontinuous metal layers, ]. Electroanal. Chem. Interfacial Electrochem., 228,97,1987. 

Greenbaum E (1998) Energetic efficiency of hydrogen photoevolution by algal water splitting. Biophys J 54 365-368... 

Heredity concept energon, 307-308 metabolon, 307-308, 312 nucleon, 307-308, 311 Hydrogen photoevolution, 79... 

Photoelectrocatalysis is the term given to the positive effect on the rate of photoelectrochemical reactions that occurs in some cases when the semiconductor surface is decorated with metal islets covering a small fraction of the surface. Consider the following facts for the photoevolution of hydrogen from water. 

The shift in potential (AE) at a given current density on the (ph-V plot caused by the decoration of the surface by metal islets is linear with the log i0 of the corresponding thermal reaction on the metals concerned. AE increases with an increase in the work function of the decorating metal. The heat of activation for the photoevolution of hydrogen from water on a metal/decorated surface is the same as that for the thermal evolution of Hj on the same metal. 

Cournac, L., Guedeney, G., Peltier, G., and Vignais, P. M. 2004. Sustained photoevolution of molecular hydrogen in a mutant of Synechocystis sp. strain PCC 6803 deficient in the type I NADPH-dehydrogenase complex. J. Bacteriol. 186, 1737-1746. 

The poly(pyridine-2,5-diyl)-RuCl3, PBpy-RuCls, and 78 shows the catalytic activity for photoevolution of hydrogen from water. The activity increases in the order 78 < poly(pyridine-2,5-diyl)-RuCl3 < PBpy-RuCla. 

---