Patent ID: 7790067

Claim:
A method for production of a nanoporous electrode for photoelectrochemical applications, comprising: (a) deposition of nanosize TiO 2 crystals on a conductive substrate; and (b) formation of mechanical and electrical contact between the TiO 2 crystals to form a mechanically stable and electrically efficient nanoporous electrode, wherein the deposition of nanosize TiO 2 crystals in step (a) is carried out by electrophoretic deposition (EPD) from a stable suspension of TiO 2 crystals obtained by: (i) treatment of TiO 2 crystals with a non-ionic compound capable of forming a complex with titanium thus modifying the surface properties of the TiO 2 nanoparticles, in a polar organic solvent, under conditions that enhance adsorption of said compound on the crystals surface; and (ii) addition of the suspension obtained in step (i) to a charging solution consisting of iodine, acetone and deionized water in a polar organic solvent, under mixing, followed by sonication of the suspension.