We report the synthesis of a three-dimensional graphene (3DG)− TiO2 nanocomposite by covalently attaching TiO2 nanoparticles onto pristine 3DG through a perfluorophenyl azide-mediated coupling reaction. The TiO2 nanoparticles were robustly attached on 3DG with minimal particle agglomeration. The 3DG−TiO2 nanocomposite demonstrated excellent photocatalytic activity in reducing CO2, about 11 times higher than that of the TiO2 nanoparticles. The enhanced activity can be partially attributed to the highly dispersed state of the TiO2 nanoparticles on the 3DG scaffold. This 3DG-based system offers a new platform for fabricating photocatalytic composite materials with enhanced activities.

Synthesis and photocatalytic activity of covalently conjugated three-dimensional pristine graphene−TiO2 nanocomposite

253rd National Meeting (2017)

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