Increasing Solar Absorption for Photocatalysis with Black Hydrogenated Titanium Dioxide Nanocrystals

Handle URI:
http://hdl.handle.net/10754/598613
Title:
Increasing Solar Absorption for Photocatalysis with Black Hydrogenated Titanium Dioxide Nanocrystals
Authors:
Chen, X.; Liu, L.; Yu, P. Y.; Mao, S. S.
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.
Citation:
Chen X, Liu L, Yu PY, Mao SS (2011) Increasing Solar Absorption for Photocatalysis with Black Hydrogenated Titanium Dioxide Nanocrystals. Science 331: 746–750. Available: http://dx.doi.org/10.1126/science.1200448.
Publisher:
American Association for the Advancement of Science (AAAS)
Journal:
Science
Issue Date:
20-Jan-2011
DOI:
10.1126/science.1200448
PubMed ID:
21252313
Type:
Article
ISSN:
0036-8075; 1095-9203
Sponsors:
We thank M. S. Dresselhaus for encouragement, M. T. Lee and S. H. Shen for their assistance, and R. Greif for discussions and critical reading of the manuscript. This research has been supported by the Office of Energy Efficiency and Renewable Energy of the U.S. Department of Energy. S.S.M. and X.C. also acknowledge support from the King Abdullah University of Science and Technology–University of California Academic Excellence Alliance. TEM work was performed at the National Center for Electron Microscopy, which is supported by the Office of Science, Office of Basic Energy Sciences of the U.S. Department of Energy.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorChen, X.en
dc.contributor.authorLiu, L.en
dc.contributor.authorYu, P. Y.en
dc.contributor.authorMao, S. S.en
dc.date.accessioned2016-02-25T13:33:08Zen
dc.date.available2016-02-25T13:33:08Zen
dc.date.issued2011-01-20en
dc.identifier.citationChen X, Liu L, Yu PY, Mao SS (2011) Increasing Solar Absorption for Photocatalysis with Black Hydrogenated Titanium Dioxide Nanocrystals. Science 331: 746–750. Available: http://dx.doi.org/10.1126/science.1200448.en
dc.identifier.issn0036-8075en
dc.identifier.issn1095-9203en
dc.identifier.pmid21252313en
dc.identifier.doi10.1126/science.1200448en
dc.identifier.urihttp://hdl.handle.net/10754/598613en
dc.description.abstractWhen 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.en
dc.description.sponsorshipWe thank M. S. Dresselhaus for encouragement, M. T. Lee and S. H. Shen for their assistance, and R. Greif for discussions and critical reading of the manuscript. This research has been supported by the Office of Energy Efficiency and Renewable Energy of the U.S. Department of Energy. S.S.M. and X.C. also acknowledge support from the King Abdullah University of Science and Technology–University of California Academic Excellence Alliance. TEM work was performed at the National Center for Electron Microscopy, which is supported by the Office of Science, Office of Basic Energy Sciences of the U.S. Department of Energy.en
dc.publisherAmerican Association for the Advancement of Science (AAAS)en
dc.titleIncreasing Solar Absorption for Photocatalysis with Black Hydrogenated Titanium Dioxide Nanocrystalsen
dc.typeArticleen
dc.identifier.journalScienceen
dc.contributor.institutionUC Berkeley, Berkeley, United Statesen
kaust.grant.programAcademic Excellence Alliance (AEA)en
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.