The Stabilization of C3N4: New Development of Such a Material as Macroscopic Sample.

Graphitic carbon nitride C6N9H3·HCl: Characterisation by UV and near-IR FT Raman spectroscopy

“…Other avenues of research have investigated the formation of layered graphitic (C,N) materials that could provide potential precursors to new high-density sp 3 -bonded phases as well as having useful properties in their own right. These compounds are now being studied extensively both experimentally and theoretically [4,[8][9][10][11][12][13][14][15][16][17][18][19][20].…”

“…The pressures used are generally on the order of P$0.1-4 GPa at temperatures between 400-600 1C [8,9,14,17,29], much lower than the high P-T conditions used in attempts to produce sp 3 -bonded carbon nitride materials.…”

“…High-pressure, high-temperature synthesis approaches have been used to prepare relatively well crystallised varieties of graphitic carbon nitride materials by reactions between precursors such as the heterocyclic aromatic compounds melamine and cynanuric acid (C 3 N 3 Cl 3 ) [8,9,14,17]. The layered solid state compounds are formed via lateral condensation or elimination reactions between the planar aromatic rings [19]: e.g., C 3 N 6 H 6 +C 3 N 3 Cl 3 -C 6 N 9 H 3 +3HCl…”

Carbon nitrides: synthesis and characterization of a new class of functional materials

“…63 Chemical analyses showed that substantial quantities of Cl as well as H atoms were incorporated within the structure. Zhang et al investigated the selfcondensation of aminodichlorotriazine as well as reactions between melamine and cyanuric chloride at higher P, T conditions (1-1.5 GPa; 500-600 1C) to form a family of yellow crystalline products that approached a limiting composition C 6 N 9 H 3 ÁxHCl with x = 1, also formulated as bonding around the C and N atoms and 13 C nuclear magnetic resonance (NMR) spectra showed two non-equivalent C sites with peaks at 166 and 159 ppm in a 2 : 1 ratio, consistent with protonation of the some of the C atoms within the layers.…”

Graphitic Carbon Nitride Materials for Energy Applications

“…Chloroplatinic acid (H 2 PtCl 6 ;(H 2 O) 6 , 0.06 g, Sigma Aldrich) and gCNM (0.09 g) were dispersed in 200 mL of ethylene glycol (Sigma Aldrich). The mixture was stirred for 4 h under nitrogen and then heated to 140°C for 3 h, resulting in a brown-black mixture.…”