School of Chemical Engineering, Hanoi University of Science and Technology, Hanoi, Viet Nam
BibTex Citation Data :
@article{BCREC13931, author = {Tu Anh Nguyen Thi and Anh- Tuan Vu}, title = {Nanocomposite ZnO/g-C3N4 for Improved Degradation of Dyes under Visible Light: Facile Preparation, Characterization, and Performance Investigations}, journal = {Bulletin of Chemical Reaction Engineering & Catalysis}, volume = {17}, number = {2}, year = {2022}, keywords = {ZnO; g-C3N4; Composite; Photocatalyst; Dye}, abstract = { In this study, ZnO/g-C 3 N 4 nanocomposites were prepared via a physical mixing-calcination process for improved degradation of dyes under visible light irradiation. The BET surface area, pore volume, crystal size, and pH pzc of the ZnO/g-C 3 N 4 composite were 3.9 m 2 /g, 0.034 cm 3 /g, 18.1 nm, and 7.7, respectively. Although the morphology of the ZnO/g-C 3 N 4 composite was very different from that of pure g-C 3 N 4 , their average pore sizes were similar. The E g of the ZnO/g-C 3 N 4 composite (3.195 eV) was slightly lower than that of ZnO (3.195) but much higher than that of g-C 3 N 4 (2.875). The interface interaction of ZnO and g-C 3 N 4 , which was revealed by oscillations of Zn-C, benefited the transport of photoinduced charge carriers and reduced the recombination of electron-hole. As the result, the ZnO/g-C 3 N 4 composite had higher photocatalytic activity than ZnO and g-C 3 N 4 . Its degradation efficiency (DE) value for methylene blue (MB) in 90 min and rate constant were 93.2 % and 0.025 min ‑1 , respectively. In addition, the effects of ZnO/urea molar ratio, catalyst dosage, solution pH, and concentration of dye on photocatalytic degradation of MB were completely investigated. The photocatalytic performance of the ZnO/g-C 3 N 4 composite was evaluated by the degradation of other persistent organic compounds, also compared to other catalysts in the literatures. Copyright © 2022 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License ( https://creativecommons.org/licenses/by-sa/4.0 ). }, issn = {1978-2993}, pages = {403--419} doi = {10.9767/bcrec.17.2.13931.403-419}, url = {https://ejournal2.undip.ac.id/index.php/bcrec/article/view/13931} }
Refworks Citation Data :
In this study, ZnO/g-C3N4 nanocomposites were prepared via a physical mixing-calcination process for improved degradation of dyes under visible light irradiation. The BET surface area, pore volume, crystal size, and pHpzc of the ZnO/g-C3N4 composite were 3.9 m2/g, 0.034 cm3/g, 18.1 nm, and 7.7, respectively. Although the morphology of the ZnO/g-C3N4 composite was very different from that of pure g-C3N4, their average pore sizes were similar. The Eg of the ZnO/g-C3N4 composite (3.195 eV) was slightly lower than that of ZnO (3.195) but much higher than that of g-C3N4 (2.875). The interface interaction of ZnO and g-C3N4, which was revealed by oscillations of Zn-C, benefited the transport of photoinduced charge carriers and reduced the recombination of electron-hole. As the result, the ZnO/g-C3N4 composite had higher photocatalytic activity than ZnO and g-C3N4. Its degradation efficiency (DE) value for methylene blue (MB) in 90 min and rate constant were 93.2 % and 0.025 min‑1, respectively. In addition, the effects of ZnO/urea molar ratio, catalyst dosage, solution pH, and concentration of dye on photocatalytic degradation of MB were completely investigated. The photocatalytic performance of the ZnO/g-C3N4 composite was evaluated by the degradation of other persistent organic compounds, also compared to other catalysts in the literatures. Copyright © 2022 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
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