Journal
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
Volume 12, Issue 3, Pages -Publisher
NATL INST MATERIALS SCIENCE
DOI: 10.1088/1468-6996/12/3/034401
Keywords
photocatalysis; visible light; carbon nitride; zinc containing; hydrogen evolution
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Funding
- World Premier International Research Center Initiative on Materials Nanoarchitectonics, MEXT
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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 (lambda >= 420 nm). The hydrogen evolution rate was more than 10 times higher for a 10%-Zn/g-C3N4 sample (59.5 mu mol h(-1)) than for pure g-C3N4. The maximum quantum yield was 3.2% at 420 nm.
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