Highly Photoactive, Low Bandgap TiO₂ Nanoparticles Wrapped by Graphene

Highly photoactive, graphene-wrapped anatase TiO2 nanoparticles are synthesized through one-step hydrothermal reduction of graphene oxide (GO) and TiO2 crystallization from GO-wrapped amorphous TiO2 NPs. Graphene-TiO2 nanoparticles exhibit a red-shift of the band-edge and a significant reduction of the bandgap (2.80 eV). Graphene-TiO2 nanoparticles possess excellent photocatalytic properties under visible light for the degradation of methylene blue. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.