Nitrogen-doped graphene quantum dots (NGQD) and TiO2 composite structures were synthesized via hydrothermal reaction. The composite structure is characterized through a variety of techniques including X-Ray Diffraction (XRD) and High Resolution Transmission Electron Microscopy (HR-TEM). Sub-10 nm anatase TiO2 nanoparticles were covalently bonded with NGQDs to form a strong electronic coupling that facilitates the photogenerated charge transfer and separation at the NGQD/TiO2 interface. By monitoring the photocatalytic degradation of Rhodamine B, it was found that the photocatalytic performance of optimized NGQDs/TiO2 composite is over 5 times higher than that of regular TiO2 nanoparticles.

Nitrogen-doped graphene quantum dots / TiO2 composite for photocatalysis

256th National Meeting (2018)

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