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  • Title: Hydrogen production using zinc-doped carbon nitride catalyst irradiated with visible light.
    Author: Yue B, Li Q, Iwai H, Kako T, Ye J.
    Journal: Sci Technol Adv Mater; 2011 Jun; 12(3):034401. PubMed ID: 27877392.
    Abstract:
    Recently, graphitic carbon nitride (g-C3N4) has been investigated as a photocatalyst for water splitting and organic dye degradation. In this study, we have developed a simple soft-chemical method of doping Zn into g-C3N4 to prepare a metal-containing carbon nitride. The doping was confirmed by x-ray photoelectron spectroscopy, and diffusion reflectance spectra revealed a significant red shift in the absorption edge of Zn/g-C3N4. This hybrid material shows high photocatalytic activity and good stability for hydrogen evolution from an aqueous methanol solution under visible light irradiation (λ≥420 nm). The hydrogen evolution rate was more than 10 times higher for a 10%-Zn/g-C3N4 sample (59.5 μmol h-1) than for pure g-C3N4. The maximum quantum yield was 3.2% at 420 nm.
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