Journal
SCIENCE
Volume 331, Issue 6018, Pages 746-750Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.1200448
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- Office of Energy Efficiency and Renewable Energy of the U.S. Department of Energy
- King Abdullah University of Science and Technology-University of California Academic Excellence Alliance
- Office of Science, Office of Basic Energy Sciences of the U.S. Department of Energy
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When used as a photocatalyst, titanium dioxide (TiO2) absorbs only ultraviolet light, and several approaches, including the use of dopants such as nitrogen, have been taken to narrow the band gap of TiO2. We demonstrated a conceptually different approach to enhancing solar absorption by introducing disorder in the surface layers of nanophase TiO2 through hydrogenation. We showed that disorder-engineered TiO2 nanocrystals exhibit substantial solar-driven photocatalytic activities, including the photo-oxidation of organic molecules in water and the production of hydrogen with the use of a sacrificial reagent.
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