Heterogeneous sensitized decomposition of water with sunlight. Final progress report, 1 Jul 1975--30 Jun 1976

Technical Report · Wed Jun 30 04:00:00 EDT 1976

OSTI ID:7329060

Ghosh, A K; Maruska, H P

Studies of the sensitization of TiO/sup 2/ electrodes to visible light to achieve the photoelectrolysis of water with sunlight have been undertaken. Sensitization has been accomplished by: (1) impurity doping; (/sup 2/) dye sensitization; and (/sup 3/) heterojunction formation. Hydrogen gas has been generated in photoelectrolysis cells with visible light using both Cr-doped TiO/sup 2/ and TiO/sup 2//CdSe heterojunction electrodes. Photocurrents in response to visible excitation were observed with a number of dyes. Quantum efficiencies as high as 100% were achieved with UV excitation (360nm) of Al-doped TiO/sup 2/ electrodes, which have a sunlight engineering efficiency of 0.75%. Hydrogen was produced by UV excitation of SrTiO3 without an external bias. (GRA)

• Research Organization: Exxon Research and Engineering Co., Linden, NJ (USA). Government Research Lab.
• OSTI ID: 7329060
• Report Number(s): PB-258870; EXXON/GRU-4BEA.75
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
080106* -- Hydrogen-- Production-- Biosynthesis & Photochemical Processes
CADMIUM COMPOUNDS
CADMIUM SELENIDES
CHALCOGENIDES
ELECTRODES
ELECTROLYSIS
HYDROGEN COMPOUNDS
HYDROGEN PRODUCTION
LYSIS
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTROLYSIS
RESEARCH PROGRAMS
SELENIDES
SELENIUM COMPOUNDS
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
WATER