Photocatalytic Water Oxidation by Hematite/Reduced Graphene Oxide Composites
Citations Over TimeTop 1% of 2013 papers
Abstract
The photocatalytic water oxidation activity of hematite (α-Fe2O3) has been greatly enhanced by incorporating hematite nanoparticles on the reduced graphene oxide (rGO) nanosheets. Photoelectrochemical measurement results show that coupling the hematite nanoparticles with the rGO greatly increases the photocurrent and reduces the charge recombination rate. Transient absorption spectroscopy and time-domain terahertz spectroscopy have provided the direct evidence that the photogenerated electrons have transferred as the mobile carriers from α-Fe2O3 to rGO, which enhances the charge separation and suppresses the charge recombination. This work has provided new insight into the mechanism of photocatalysis enhancement by reduced graphene oxide, which has implications in the design of semiconductor/graphene heterojunction photocatalysts.
Related Papers
- → Thermal transformations of akaganéite and lepidocrocite to hematite: assessment of possible precursors to Martian crystalline hematite(2008)58 cited
- → Effect of oxygen evolution catalysts on hematite nanorods for solar water oxidation(2011)53 cited
- → Hematite and hematite–akageneite composites. XRD and electrokinetic study and interaction with ionic surfactants(2015)15 cited
- → Ultrathin Polycrystalline Hematite and Goethite−Hematite Core−Shell Nanorods(2009)13 cited
- → Role and Fate of Hematite in Titania Coated Hematite Photocatalysts(2002)3 cited