Oxygen Vacancies Confined in Ultrathin Indium Oxide Porous Sheets for Promoted Visible-Light Water Splitting
Citations Over TimeTop 1% of 2014 papers
Abstract
Finding an ideal model for disclosing the role of oxygen vacancies in photocatalysis remains a huge challenge. Herein, O-vacancies confined in atomically thin sheets is proposed as an excellent platform to study the O-vacancy-photocatalysis relationship. As an example, O-vacancy-rich/-poor 5-atom-thick In2O3 porous sheets are first synthesized via a mesoscopic-assembly fast-heating strategy, taking advantage of an artificial hexagonal mesostructured In-oleate complex. Theoretical/experimental results reveal that the O-vacancies endow 5-atom-thick In2O3 sheets with a new donor level and increased states of density, hence narrowing the band gap from the UV to visible regime and improving the carrier separation efficiency. As expected, the O-vacancy-rich ultrathin In2O3 porous sheets-based photoelectrode exhibits a visible-light photocurrent of 1.73 mA/cm(2), over 2.5 and 15 times larger than that of the O-vacancy-poor ultrathin In2O3 porous sheets- and bulk In2O3-based photoelectrodes.
Related Papers
- → Fabrication of an Efficient BaTaO2N Photoanode Harvesting a Wide Range of Visible Light for Water Splitting(2013)224 cited
- → Hierarchically branched Fe2O3@TiO2nanorod arrays for photoelectrochemical water splitting: facile synthesis and enhanced photoelectrochemical performance(2016)92 cited
- → Mesoscopic Devices — What are They?(1995)1 cited
- → Rock Mesoscopic Structural Plane, Mesoscopic Anisotropy and Mesoscopic Anisotropy Index(2012)
- → Review of Theory of Mesocopic Systems(2017)