4.6 Article

Effects of the electron-beam-induced modification of g-C3N4 on its performance in photocatalytic organic dye decomposition

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CHEMICAL PHYSICS LETTERS
卷 813, 期 -, 页码 -

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ELSEVIER
DOI: 10.1016/j.cplett.2023.140320

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Photocatalyst; Electron beam; Defect; Textural property

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Electron beam (EB) irradiation was used to improve the photocatalytic efficiency of graphitic carbon nitride (g-C3N4) for Rhodamine B (RhB) decomposition. Irradiation up to 200 kGy increased the efficiency, but further irradiation decreased it. EB irradiation altered the chemical structure and surface properties of g-C3N4. Low-dose irradiation introduced defects and increased surface hollow depth, improving the photocatalytic efficiency. In contrast, high-dose irradiation decreased surface hollow depth due to intense structural destruction.
Graphitic carbon nitride (g-C3N4) was irradiated with an electron beam (EB) to improve the photocatalytic efficiency of Rhodamine B (RhB) decomposition. EB irradiation up to 200 kGy improved the efficiency of RhB decomposition, whereas further EB irradiation lowered the reaction efficiency. The chemical structure and textural properties of g-C3N4 were altered via EB irradiation. Low-dose EB irradiation introduced structural defects in g-C3N4 and increased its surface hollow depth, resulting in improved photocatalytic efficiency. In contrast, high-dose EB irradiation decreased the surface hollow depth, probably owing to intense structural destruction following recomposition.

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