Back to Search
Start Over
Dependence of electronic structure of g-C3N4 on the layer number of its nanosheets: A study by Raman spectroscopy coupled with first-principles calculations.
- Source :
-
Carbon . Dec2014, Vol. 80, p213-221. 9p. - Publication Year :
- 2014
-
Abstract
- Graphitic carbon nitride (g-C 3 N 4 ) has attracted worldwide attention, because of its promising potential applications and theoretical prediction of its unique properties. Herein, 1-, 2- and 4-layer g-C 3 N 4 nanosheets were synthesized in a well-crystallized form by controlling the intercalation time in a simple intercalation–exfoliation process. The electronic structures of the nanosheets were captured in their Raman spectra that clearly evolved with the layer number of the nanosheets for the first time. A clear correlation between the spectral properties and the layer number of the nanosheets was clarified by combining Raman spectra and the first-principles calculations. Raman vibrational modes of g-C 3 N 4 were assigned. The layer–layer deformation vibrations and related in-plane twisting vibrations or symmetrical stretching vibrations reflected the change in the electronic structure of the nanosheets with different layers. The results may shed light on brand-new opportunities for significant improvements in the synthesis, structure, electronic and optical properties of single-layer and ultrathin g-C 3 N 4 nanosheets toward desirable functional materials. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00086223
- Volume :
- 80
- Database :
- Academic Search Index
- Journal :
- Carbon
- Publication Type :
- Academic Journal
- Accession number :
- 98668085
- Full Text :
- https://doi.org/10.1016/j.carbon.2014.08.059