Journal
CATALYSIS SCIENCE & TECHNOLOGY
Volume 3, Issue 5, Pages 1253-1260Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3cy20822b
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Funding
- Natural Science Foundation of China [20973128, 21271146]
- National High-Tech Research and Development Program [2006AA03Z344]
- Large-scale Instrument and Equipment Sharing Foundation of Wuhan University
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Two kinds of graphitic carbon nitride (g-C3N4) were synthesized through a pyrolysis process of urea or melamine. It is found that the obtained g-C3N4, as photocatalysts, can reduce CO2 to organic fuels under visible light, and exhibit different photoactivity and selectivity on the formation of CH3OH and C2H5OH. The product derived from the urea (denoted as u-g-C3N4) shows a mesoporous flake-like structure with a larger surface area and higher photoactivity for the CO2 reduction than the non-porous flaky product obtained from melamine (denoted as m-g-C3N4). Moreover, using u-g-C3N4 as a photocatalyst can result in the formation of a mixture containing CH3OH and C2H5OH, while m-g-C3N4 only leads to the selective formation of C2H5OH. The present interesting findings could shed light on the design of efficient, eco-friendly and convenient photocatalysts and the tuning of their photoreactivity in the field of sustainable light-to-energy conversion.
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