Photoassisted hydrogen production from titania and water

Journal Article · Thu Mar 05 04:00:00 EST 1981 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j150605a027· OSTI ID:6662555

Sato, S; White, J M

When TiO/sub 2/, reduced by H/sub 2/ or CO, is placed in an ambient of gas-phase water and illuminated with band gap light, H/sub 2/ is evolved. Adding a small amount of O/sub 2/ completely retards this reaction. A dark reaction of reduced TiO/sub 2/ with water to form H/sub 2/ also occurs at temperatures above 200/sup 0/C. These results show that H/sub 2/ evolution is not the result of catalytic water photolysis but a photoassisted reaction of water with oxygen vacancies produced by the reduction.

• Research Organization: Univ. of Texas, Austin
• OSTI ID: 6662555
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 85:5; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
080102* -- Hydrogen-- Production-- Thermochemical Processes
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
DECOMPOSITION
ELECTROMAGNETIC RADIATION
ELEMENTS
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN PRODUCTION
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
RADIATIONS
REDUCTION
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
ULTRAVIOLET RADIATION
WATER