Abstract
Yttrium-doped graphitic carbon nitride (Y/g-C3N4) catalysts were prepared via a facile pyrolysis method with urea used as a precursor and yttrium nitrate as the Y source. Characterization results show that an appropriate doping ratio of Y can be embedded into in-planes of g-C3N4. The Y/g-C3N4 catalysts are characterized by hierarchical porosity, large specific surface area, and large pore volume. Introduction of Y species effectively extends the spectral response of g-C3N4 from ultraviolet to visible region and decelerates the recombination of photogenerated electrons and holes. Because of these properties, the Y/g-C3N4 catalysts show an enhanced photocatalytic performance in rhodamine B degradation under visible light.
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