Increasing Solar Absorption for Photocatalysis with Black Hydrogenated Titanium Dioxide Nanocrystals

X. Chen, L. Liu, P. Y. Yu, S. S. Mao

Research output: Contribution to journalArticlepeer-review

4456 Scopus citations

Abstract

When used as a photocatalyst, titanium dioxide (TiO 2) absorbs only ultraviolet light, and several approaches, including the use of dopants such as nitrogen, have been taken to narrow the band gap of TiO 2. We demonstrated a conceptually different approach to enhancing solar absorption by introducing disorder in the surface layers of nanophase TiO 2 through hydrogenation. We showed that disorder-engineered TiO 2 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.
Original languageEnglish (US)
Pages (from-to)746-750
Number of pages5
JournalScience
Volume331
Issue number6018
DOIs
StatePublished - Jan 20 2011
Externally publishedYes

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