Synthesis of g-C3N4-based photocatalysts with recyclable feature for efficient 2,4-dichlorophenol degradation and mechanisms

Mg−O‐Bridged Polypyrrole/g‐C3N4 Nanocomposites as Efficient Visible‐Light Catalysts for Hydrogen Evolution

“…For further exploration of the properties of photogenerated charge separation, fluorescences pectra (FS) related to the formed COH were performed by means of the coumarin fluorescentm ethod, in whicht he coumarin reacts easily with COH and then produces luminescent 7-hydroxycoumarin. [43,47] In general, the COH amounts could effectively reflectt he separation of photogenerated charges in the nanocomposites,a nd a strongerF Ss ignal corresponds to ah igher amount of COH produced. From Figure 1c,i ti sc lear that the produced COH amounto fg -C 3 N 4 is small,s howing poor charge separation, and the COH amounti ncreases considerably after coupling with NPPy.H owever,t he COH amounti sd ecreased significantly for 1.5NP-CN,p robably because too much NPPy aggregates easily on g-C 3 N 4 nanosheets, and so, is unfavorable for effective charge transfer ands eparation.…”

Dual-defect-modified graphitic carbon nitride with boosted photocatalytic activity under visible light

“…Recently, graphitic carbon nitride (g-C 3 N 4 ), which is a π-conjugated polymer semiconductor, has captured the attentions of catalysis researchers, due to its unique characteristics that include its high chemical and thermal stabilities, preferable electronic band alignment, lack of toxicity, cost effectiveness, ease of preparation, and visible-light responsiveness 1–8 . It has also stimulated numerous studies on H 2 evolution through water splitting 1,4,9–11 , organic-pollutant degradation 12,13 , artificial photosynthesis 6,14,15 , and CO 2 reduction 16,17 . However, g-C 3 N 4 exhibits poor photocatalytic performance because of its limited ability to absorb visible light, its high rate of hole-electron pair recombination, low specific surface area, and few reactive sites 18–20 .…”

Nanostructured materials for photocatalysis

“…43 A number of additional studies were subsequently carried out on the synthesis and development of g-C3N4-based photocatalysts for applications in solar fuel generation, bacterial disinfection, pollutants degradation and organic transformations. [44][45][46][47][48][49][50][51][52][53] Dong et al recently reported the synthesis of novel g-C3N4 via thermal polymerization using sodium nitrate as oxidizing agent. As-synthesized g-C3N4 were able to degrade tylosin (TYL) (antibiotics) within 30 min under simulated sunlight irradiation.…”