Mesoporous polymeric semiconductor materials of graphitic-C3N4: general and efficient synthesis and their integration with synergistic AgBr NPs for enhanced photocatalytic performances

Abstract

The newly functional polymeric semiconductor materials, mesoporous graphitic carbon nitride (g-C 3 N 4 ), have been synthesized by using a general and efficient sol-gel synthetic approach. By means of transmission electron microscopy (TEM), we accomplished a systematic analysis on the morphology changes and the final formation of the mesoporous g-C 3 N 4 product during the whole synthesis process.Our results indicate that the sol-gel synthetic method is a simple, efficient and viable technique to the large-scale production of mesoporous polymeric materials. This proposed technique also allows controlled development and tailored design of the pore structures, which is of crucial importance for the application of mesoporous polymeric g-C 3 N 4 . In order to effectively improve the photocatalytic activity of the g-C 3 N 4 , the uniform size of the AgBr nanoparticles (NPs) were successfully loaded into the holes of the carbon nitride by a simple adsorption-deposition method, which exhibits excellent visible-light-driven photocatalytic activity for degradation of Methyl Orange dye (MO).

Tubular graphitic-C3N4: a prospective material for energy storage and green photocatalysis

“…24,26 A larger specic surface area provides more active sites for reaction, a shorter bulk diffusion length and a stronger redox ability of the charge carriers. 25,26 Most nitrogen doped carbon supercapacitor electrodes have been fabricated using nanopowders. In this respect, supercapacitor electrodes prepared using g-C 3 N 4 nanostructures have a clear advantage over bulk nitrogen doped carbon materials.…”

Synthesis, Characterization and Application of V2O5/S‐Doped Graphitic Carbon Nitride Nanocomposite for Removing of Organic Pollutants

“…When two semiconductors are coupled together, a Z‐scheme photocatalyst is formed which can be applied in pollutant degradation of water. For instance, ZnO/g‐C 3 N 4 , CdS/g‐C 3 N 4 , AgBr/g‐C 3 N 4 and NiFe‐LDH/g‐C 3 N 4 have a high absorption quantum efficiency.…”

Facile synthesis of WO3 nanorods/g-C3N4 composites with enhanced photocatalytic activity

“…Among these methods, semiconductor coupling is an effective method for photogenerated electron-hole separation [29,30]. Several semiconductor/g-C 3 N 4 composite photocatalysts such as Bi 2 WO 6 /g-C 3 N 4 [31], ZnO/g-C 3 N 4 [32], Ag 3 PO 4 /g-C 3 N 4 [33] and AgBr/g-C 3 N 4 [34] have been demonstrated to photodegrade organic dyes with enhanced photocatalytic activities under visible light irradiation.…”