Three-dimensional P-doped porous g-C3N4 nanosheets as an efficient metal-free photocatalyst for visible-light photocatalytic degradation of Rhodamine B model pollutant

Emerging Ultrahigh‐Density Single‐Atom Catalysts for Versatile Heterogeneous Catalysis Applications: Redefinition, Recent Progress, and Challenges

“…[ 184 ] The SACs photocatalysis also plays a role in the oxidative removal (photocatalytic degradation) of organic pollutants, especially the high‐density SACs may affect the catalytic efficiency and mechanism. [ 185 ] g‐C 3 N 4 (visible light absorption [ 186 ] ) and metal oxides (e.g., Fe 3 O 4 or ZnO [ 187 ] n‐type semiconductor) with good bandgap properties have been used in many photocatalytic reactions, especially for the degradation of pollutants. The synergistic effects between high‐density single atoms (e.g., Fe, Co, Mo, W, and Au) and above supports can effectively improve the capturing capacity of visible light, the binding energy with oxygen, and the charge separation behavior, thus promoting the surface reactions of catalytic oxidation (see Figure and Table 3 for details).…”

One-step thermal polymerization synthesis of nitrogen-rich g-C3N4 nanosheets enhances photocatalytic redox activity

“…24 The above-mentioned morphological changes can be attributed to the impact of the gas-shocking exfoliation during the calcination process. The in-plane pores on the surface of CN-70 can not only effectively increase the catalytic active sites and improve mass transfer, but also hinder the re-aggregation of nanosheets during the photocatalytic process, 29 which is beneficial to improve the catalytic activity and stability. In addition, the structure of CN-70 motivated us to examine its pore structure and specific surface area.…”

Phosphorous‐Doping Strategy Enabled “Concrete‐Slab”‐Like Zn Layer for Highly Stable 3D Composite Anode

“…Phosphorus is inserted into the C 3 N 4 structure by replacing the unstable carbon atom during calcination. [38][39][40][41] The introduction of P doping does not appear to influence the shape or the position of C 3 N 4 (100) and C 3 N 4 (002) peaks, suggesting that the structural integrity of C 3 N 4 is maintained even after the hybridization process (PCN-S). So, the presence of P should be further confirmed by X-ray Photoelectron Spectroscopy (XPS) spectra (Figure S4, Supporting Information).…”

“…involving P─O, P═N, and P─N bonds (Figure 1g). [36][37][38][39][40][41] The presence of N─P bonds in PCN is the best evidence for phosphorus hybridization, and its presence can also be found in the fine spectra of PCN-S N 1s. In addition to N─P, the main forms of N 1s in PCN-S include C-NH 3 , N-(C) 3 , and C═N─C.…”