PHOTOGENERATION OF HYDROGEN BY HALOBACTERIUM-HALOBIUM MMT22 COUPLED WITH SILICON PN JUNCTION SEMICONDUCTOR WITHOUT EXTERNAL BIAS POTENTIAL .2.

Hydrogen generation by the biophotoelectrochemical cell using Halobacterium halobium MMT22 for photoproton pumping and platinum coated silicon for photoelectron generation requires 1-2 h of illumination or 15-20 min of external potential of 0.6-0.9 V for the development of required hydrogen reduction potential. The evolution of H-2 continues as long as illumination is provided to the surfaces. The rate of generation of H-2 is about 5.45 1 h-1 from 1 m2 of H. halobium surface.