Journal
JOURNAL OF SOLID STATE CHEMISTRY
Volume 258, Issue -, Pages 559-565Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2017.11.026
Keywords
Graphitic carbon nitride; Photocatalyst; Grain size; Sequential heating
Funding
- Korea Basic Science Institute [D37700]
- National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning [NRF-2015R1C1A1A02036958]
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Degradation of organic pollutants has a large environmental impact, with graphitic carbon nitride (g-C3N4) being a promising metal-free, low cost; and environment-friendly photocatalyst well suited for this purpose. Herein, we investigate the photocatalytic performance of g-C3N4 based materials and correlate it with their structural properties, using three different precursors (dicyandiamide, melamine, and urea) and two heating processes (direct heating at 550 degrees C and sequential heating at 300 and 550 degrees C) to produce the above photocatalysts. We further demonstrate that sequential heating produces photocatalysts with grain sizes and activities larger than those of the catalysts produced by direct heating and that the use of urea as a precursor affords photocatalysts with larger surface areas, allowing efficient rhodamine B degradation under visible light.
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