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EXFOLIATED NANOSHEETS OF GRAPHITIC CARBON NITRIDE: STUDY OF STRUCTURE AND MORPHOLOGY

1,2 PRAUS Petr
Co-authors:
1,2 SVOBODA Ladislav 1 SMETANA Bedřich
Institutions:
1 VSB - Technical University of Ostrava, Faculty of Metallurgy, Ostrava, Czech Republic, EU, petr.praus@vsb.cz
2 VSB - Technical University of Ostrava, Institute of Environmental Technology, Ostrava, Czech Republic, EU
Conference:
8th International Conference on Nanomaterials - Research & Application, Hotel Voronez I, Brno, Czech Republic, EU, October 19th - 21st 2016
Proceedings:
Proceedings 8th International Conference on Nanomaterials - Research & Application
Pages:
92-97
ISBN:
978-80-87294-71-0
ISSN:
2694-930X
Published:
17th March 2017
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
766 views / 989 downloads
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Abstract

Bulk graphitic carbon nitride (g-C3N4) was prepared by heating of melamine at 600 oC for 2 hours. Thermogravimetric analysis showed that this temperature is optimal for the preparation of bulk g-C3N4 without unnecessary loss of the material. The characterization was performed by X-ray diffraction (XRD) and scanning (SEM) and transmission electron microscopy (TEM). Specific surface area (SSA) of bulk g-C3N4 was about 23 m2g-1. In order to increase the SSA bulk g-C3N4 was exfoliated into nanosheets by heating at 500 oC for 4 hours and by ultrasonication in an aqueous dispersion for 1 hour. The SSA increased at 157 m2g-1 by the heating and at 54 m2g-1 by ultrasonication. XRD revealed the layered structure of bulk g-C3N4 as well as of both exfoliated g-C3N4 samples.

Keywords: Graphitic carbon nitride, exfoliation, nanosheets

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