Cyano‐Rich g‐C₃N₄ in Photochemistry: Design, Applications, and Prospects

Abstract

Cyano‐rich g‐C3N4 materials are widely used in various fields of photochemistry due to the very powerful electron‐absorbing ability and electron storage function of cyano, as well as its advantages in improving light absorption, adjusting the energy band structure, increasing the polarization rate and electron density in the structure, active site concentration, and promoting oxygen activation ability. Notwithstanding, there is yet a huge knowledge break in the design, preparation, detection, application, and prospect of cyano‐rich g‐C3N4. Accordingly, an overall review is arranged to substantially comprehend the research progress and position of cyano‐rich g‐C3N4 materials. An overall overview of the current research position in the synthesis, characterization (determination of their location and quantity), application, and reaction mechanism analysis of cyano‐rich g‐C3N4 materials to provide a quantity of novel suggestions for cyano‐modified carbon nitride materials' construction is provided. In view of the prevailing challenges and outlooks of cyano‐rich g‐C3N4 materials, this paper will purify the growth direction of cyano‐rich g‐C3N4, to achieve a more in‐depth exploration and broaden the applications of cyano‐rich g‐C3N4.

Large-Scale Syntheses of Multicolor Stimulus Responsive Room-Temperature Phosphorescent Polymer-Carbonyl-Modified Carbon Nitrogen Quantum Dots

“…The O 1s XPS result around 531.0 eV points to a CO group (Figure S24). These results indicate the substantial presence of carboxyl and amino groups and triazine rings in the structure of PVP- m -OCNQDs. , In the 1 H nuclear magnetic resonance ( 1 H NMR) spectra of PVP and PVP- m -OCNQDs (Figure e), obvious PVP H signals are detected from 1.0 to 5.0 ppm, along with aromatic H signals observed from 7.0 to 8.0 ppm and additional C–H signals at 3.0 ppm, which indicates the occurrence of a chemical reaction between urea and PVP. Combined with the Fourier transform infrared (FT-IR) spectra, an additional C–N peak at 1155 cm –1 of PVP- m -OCNQDs appears compared to that of PVP, which indicates that m -OCNQDs were successfully linked on PVP by dehydrogenation (Figure S25).…”

“…These results indicate the substantial presence of carboxyl and amino groups and triazine rings in the structure of PVP-m-O� CNQDs. 27,28 In the 1 H nuclear magnetic resonance ( 1 H NMR) spectra of PVP and PVP-m-O�CNQDs (Figure 3e Combined with the Fourier transform infrared (FT-IR) spectra, an additional C−N peak at 1155 cm −1 of PVP-m-O�CNQDs appears compared to that of PVP, which indicates that m-O�CNQDs were successfully linked on PVP by dehydrogenation (Figure S25). The detailed characterizations presented above demonstrate that the formation of m-O�CNQDs and PVP are successfully linked at the rim of the m-O�CNQDs.…”

Europium/Graphite Phase Carbon Nitride Composites: Preparation and Photocatalytic Degradation Potential of Different Drugs

“…Due to the limitations of wastewater treatment, dyes and heavy metal ions, typically produced during industrialization, will enter the environmental medium with wastewater discharge and affect biogeochemical cycling processes like organism development and growth. This poses a severe risk to human health and ecosystems [1–4] . In addition to causing significant harm to the ecosystem, [5] the release of these wastewater into the environment can expose humans to several risks, [6] including anemia, [7] neurological disorders, [8] and carcinogenicity [9]…”