Abstract
Crumpled cuprous oxide anchored graphitic carbon nitride (Cu2O-g-C3N4) nanosheets were synthesized for photosplitting of water under visible light illumination. The nanosheets were characterized by scanning and transmission electron microscopies, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Fourier Transform Infrared (FT-IR) spectroscopy. The analytical data showed that the surface of g-C3N4 nanosheets crumpled as a result of Cu2O anchoring. The water photosplitting experiments, performed in the presence of a sacrificial agent methanol, showed the liberation of a significant amount of hydrogen, viz., 842μmolh−1g−1 after 48h illumination. Such superior photocatalytic activity may be due to efficient inter-particle charge transfer in the direction from n-type g-C3N4 to p-type Cu2O which hinders the electron-hole recombination.
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