4.7 Article

Band-gap expansion of tungsten oxide quantum dots synthesized in sub-nano porous silica

Journal

CHEMICAL COMMUNICATIONS
Volume 49, Issue 76, Pages 8477-8479

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c3cc44264k

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Funding

  1. Tokyo Metropolitan Collaboration of Regional Entities for the Advancement of Technological Excellence, Japan Science and Technology Agency (JST)
  2. [23350102]

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The band-gap energy tuning of WO3 quantum dots was realized in the range of 2.6 eV (bulk) to 3.7 eV (sub-nano) by precise size control around one nanometer. Newly synthesized sub-nanoporous silicas act as excellent templates. In addition, single-electron reduction of oxygen under UV irradiation is now achievable with WO3.

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