Facilitating carrier kinetics in ultrathin porous carbon nitride through shear-repair strategy for peroxymonosulfate-assisted water purification
Shihezi University · Fujian Agriculture and Forestry University · +4 more institutions
Abstract
Achieving high specific surface area (HSSA) in graphitic carbon nitride (g-C3N4) severely depolymerizes the molecular chain structure, resulting in sluggish carrier kinetic behaviors and thus moderated water purification performance in photocatalytic peroxymonosulfate (PMS) activation system. Herein, we report a versatile shear-repair strategy for fabricating ultrathin porous g-C3N4 nanosheets with a thickness of 1.5 nm, HSSA (138.5 m2 g−1), and highly polymerized molecular chains. This strategy accelerates exciton dissociation and charge carrier separation, with the exciton binding energy decreasing from 65.7 to 47.5 meV. Crucially, the electron-donating pollutant and electron-withdrawing PMS generate a…
Citation impact
- FWCI
- 12.38
- Percentile
- 100%
- References
- 69
Authors
7Topics & keywords
- Porosity
- Kinetics
- Carbon nitride
- Materials science
- Graphitic carbon nitride
- Nitride
- Chemical engineering
- Nanotechnology
- Clean water and sanitation