Combined Effect of Sonication and Electron Beam Irradiation on the Photocatalytic Organic Dye Decomposition Efficiency of Graphitic Carbon Nitride
Year: 2025
Type: article
Abstract: The photocatalytic efficiency of graphitic carbon nitride (g-C3N4) for aqueous rhodamine B (RhB) decomposition was investigated. To examine the combined effects of sonication and electron beam (EB) irradiation on the photocatalytic efficiency, g-C3N4 was sonicated in 1,3-butanediol and subsequently irradiated with EB. The photocatalytic efficiency was improved by low-dose EB irradiation owing to the generation of structural defects that acted as active reaction sites. Sonication before EB irradiation induced mild exfoliation and further improved the photocatalytic efficiency. Prolonged sonication enlarged the improvement, primarily by increasing the specific surface area of g-C3N4. The positive effect of sonication was remarkable for g-C3N4 irradiated with low-dose EB compared to that for g-C3N4 irradiated with higher-dose EB. The difference between the sonication effects could be ascribed to electrostatic interactions and the resultant agglomeration among g-C3N4 particles after EB irradiation. High-dose EB irradiation caused electrification followed by coarsening of the particles, whereas low-dose EB irradiation did not produce these results and led to positive effects owing to EB-induced g-C3N4 structural alteration.
Source: C – Journal of Carbon Research
DOI: 10.3390/c11040091
Authors: Aika Harako, Shuhei Shimoda, Keita Suzuki, Atsushi Fukuoka, Tomoya Takada
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,930
OpenAlex ID: W7110043677