GRAPHITIC FORM OF C3N4 THROUGH THE SOLVOTHERMAL ROUTE

Citation
H. Montigaud et al., GRAPHITIC FORM OF C3N4 THROUGH THE SOLVOTHERMAL ROUTE, Comptes rendus de l'Academie des sciences. Serie II. Mecanique, physique, chimie, astronomie, 325(4), 1997, pp. 229-234
Citations number
12
Categorie Soggetti
Multidisciplinary Sciences
ISSN journal
12518069
Volume
325
Issue
4
Year of publication
1997
Pages
229 - 234
Database
ISI
SICI code
1251-8069(1997)325:4<229:GFOCTT>2.0.ZU;2-K
Abstract
The synthesis of beta - C3N4, predicted from ab initio calculations, s eems difficult owing to the stability of the N-2 molecule easily forme d when high temperatures are involved in the preparation process. Usin g a solvothermal reaction (P approximate to 130 MPa, T approximate to 250 degrees C) between two organic precursors (melamine and cyanuric c hloride) in the presence of a weakly nucleophilic base ([(CH3)(2)CH](2 )-NC2H5) as the solvent to remove hydrogen and chloride as HCl, a brow n-orange solid was prepared. Various physico-chemical characterization s (X-ray diffraction, electron probe microanalysis, scanning electron microscopy, Raman and X-ray photoelectron spectroscopies) confirm the formation of the graphitic form of C3N4. This material provides art op ening for the preparation of dense forms of C3N4 using a high pressure route.