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- W4306179901 abstract "Fluorine atoms doping was reported in experiment to reduce the band gap, improve the oxidation potential of hole, and polarize the electron distribution of polymeric carbon nitride (PCN). However, the relationships between different types of F doping and the roles of F doping in electronic and optical properties remain elusive. In this work, we investigate several F doping types in PCN and analyze their different roles in electronic and optical properties with the first-principles calculations. The results show that two stable and cooperative F doping types are found, one is to form the C (sp3)-F bond (Fcorner type), and the other is F atom replacing amino group –NH2 (FN3 type) forming covalent C-F bond. The Fcorner doping reduces the energy level of valence-band maximum (VBM), causes excited electron-hole distribution polarized, and increases the hole distribution on F atoms, which strengthens the capacity of photocatalytic oxidation and improves the electron-hole separation efficiency, while FN3 type doping plays the roles of reducing the bandgap and improving the light absorption. In addition, under the synergistic action of two types of F doping, the adsorption energy of toluene on F-codoped PCN is greatly enhanced, improving the ability of photocatalytic activation of toluene. Our work develops a new understanding of F doping and reveals the roles of different types of F doping, providing a rationale for designing and regulating more efficient photocatalysts and improving the properties of photocatalytic toluene oxidation." @default.
- W4306179901 created "2022-10-14" @default.
- W4306179901 creator A5032239683 @default.
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- W4306179901 date "2023-01-01" @default.
- W4306179901 modified "2023-10-01" @default.
- W4306179901 title "Enhanced photocatalytic toluene oxidation performance induced by two types of cooperative fluorine doping in polymeric carbon nitride with the first-principles calculations" @default.
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- W4306179901 doi "https://doi.org/10.1016/j.jcis.2022.10.028" @default.
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