Accelerating interlayer charge transport of alkali metal-intercalated carbon nitride for enhanced photocatalytic hydrogen evolution

Tuning Band Gap in Fe-Doped g-C3N4by Zn for Enhanced Fenton-Like Catalytic Performance

“…The binding formation of Zn–N affected the chemical environment of the adjacent C atoms and decreased the electronic density of the C atoms, which led to the binding energy increase Figure c shows the high-resolution spectrum of N1s, and the peaks at 398.10, 398.94, and 400.23 eV correspond to pyridinic N (C–NC), pyrrolic N (N–(C) 3 ), and graphitic N (C–N–H) in the heptazine ring, respectively . Transition cations are always captured by pyridinic N to form coordination bonds due to its lone pair electrons, which decreased the electronic density around the N atom.…”

“…47 Figure 3c shows the high-resolution spectrum of N1s, and the peaks at 398.10, 398.94, and 400.23 eV correspond to pyridinic N (C− N�C), pyrrolic N (N−(C) 3 ), and graphitic N (C−N−H) in the heptazine ring, respectively. 48 Transition cations are always captured by pyridinic N to form coordination bonds due to its lone pair electrons, which decreased the electronic density around the N atom. The binding energy for pyridinic N in these samples increased from 398.18, 398.38, and 398.43 to 398.53 eV with the Zn doping, which means that the electric density reduced around the pyridinic N. On the basis of references, 20,36 the coordination bond of Zn−N was formed.…”

Singlet Oxygen Formation Mechanism for the H2O2-Based Fenton-like Reaction Catalyzed by the Carbon Nitride Homojunction

“…Figure S1b displays the molecular structure of these samples analyzed by the FT-IR spectra. The peak at 810 cm –1 corresponds to the respiratory vibration of triazine units, the multiple peaks in the range of 1100–1800 cm –1 are related to the stretching vibration modes of different C–N in the aromatic ring, and the wide peaks in the range of 3000–3600 cm –1 are related to the respiratory vibration mode of –NH 2 at the edge of g-C 3 N 4 . − Compared to CN and HCN, the peaks at 810 cm –1 and in the range of 3000–3600 cm –1 are significantly weaker, but the peak at 2168 cm –1 corresponded to the stretching vibration of CN is enhanced for HCCN . Compared to CN, the peaks of HCN within the range of 1100–1800 cm –1 were slightly changed, probably due to the increase in crystallinity, while the peaks of HCCN were significantly changed due to the fact that the addition of NH 4 Cl and NaSCN in the fabrication of HCCN affects or disrupts the structure of g-C 3 N 4 .…”

Experiments and DFT investigation of microwave-assisted sol–gel method prepared S-doped g-C3N4 for enhanced photocatalytic degradation of gaseous toluene

“…Density functional theory (DFT) and the plane wave CASTEP algorithm 26 are employed to analyze the electronic properties of S-doped g-C 3 N 4 . The core electrons are represented using the Vanderbilt ultra-soft pseudo-potential, and the exchange-correlation potential is computed using the Perdue–Burker–Ernzerhof (PBE) generalized gradient approximation (GGA).…”