Fluoride ion-promoted hydrothermal synthesis of oxygenated g-C3N4 with high photocatalytic activity

Fabrication of tailored rod-shaped carbon nitride, g-C3N4, decorated with MoSe2 flowers for the catalytic reduction of nitrophenol, organic dye degradation and biocompatibility studies

“…Other bands around 1087 cm −1 and 1738 cm −1 are ascribed to the C–O and symmetrical CO stretching vibrations respectively and the increased intensity implies the formation of more hydrogen bonding. 44,50 The transmittance between 1200 and 1700 cm −1 is ascribed to stretching vibration modes of aromatic C–N heterocycles, while broad peaks in the region of 2850–3300 cm −1 are attributed to the N–H and O–H stretching vibration similar to various reports due to the uncondensed surface amine groups. A signal appearing at 3386 cm −1 is due to the stretching vibration of –OH, 44 while the stronger –NH vibration further confirms the decrease in the polymerization degree of b-CN.…”

“…This lower frequency shift is due to an increased force constant of bonds indicating deformation of the structure and signifies the formation of hydrogen bonds as N–H⋯O. 50,51 The presence of melem was further confirmed from FTIR (Fig. S2, ESI†) where the CN-hydro also contains similar bands for the modified b-CN.…”

Highly Efficient Photocatalysis and Photo Fenton‐Like Catalyst Degradation of Tetracycline and Rhodamine B Using Novel Porous Z‐Scheme WO3/g‐C3N4 of In Situ Synthesis

“…The relatively wide characteristic peaks ranging from 2950 to 3350 cm −1 are attributed to the N–H and O–H stretching pattern, it may be produced by a noncondensible terminal amidogen group (–NH 2 or –NH). [ 31 ] By comparison, it was found that whether WO 3 was added did not affect the structure of the CN. Meanwhile, with the increase of WO 3 mass fraction, the absorption peak at 805 cm −1 showed a minor redshift due to the vibration pattern of the O–W–O band.…”

High yield post-thermal treatment of bulk graphitic carbon nitride with tunable band structure for enhanced deNOx photocatalysis

“…As shown in the XPS survey (figure 2(A)), all the samples were mainly composed of C and N, and trace amounts of O were detected on account of surface adsorbed oxygen-containing species. For bulk CN and CN-550 (figure 2(B)), the C1s contained two components centered at 288.1 and 284.8 eV, which were ascribed to N-C=N coordination in the framework of CN and surface carbon impurities, respectively [20]. As to CN-500, apart from these two peaks, another peak located at 286.4 eV was observed, corresponding to C-NH x on the edges of heptazine unites and adsorbed hydrocarbons [18].…”