期刊
JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY
卷 2022, 期 -, 页码 -出版社
HINDAWI LTD
DOI: 10.1155/2022/5531219
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资金
- Viet Nam Ministry of Science and Technology [DTDL.CN-62/19]
- German Academic Exchange Service (DAAD) [57315854]
- Federal Ministry for Economic Cooperation and Development (BMZ)
The photocatalytic activity of Ti-SBA-15/C3N4 catalysts for degrading 2,4-D herbicides in water under visible light irradiation was investigated. The results showed that Ti-SBA-15/C3N4 with 2.5% Ti exhibited higher efficiency in 2,4-D degradation compared to Ti-SBA-15 and C3N4. The catalyst showed pseudo-first-order kinetics with a high degradation rate constant, and it could be reused for at least two cycles with only a slight decrease in catalytic activity.
In the present study, the photocatalytic activity of Ti-SBA-15/C3N4 catalysts was investigated to degrade 2,4-Dichlorophenoxyacetic acid (2,4-D) herbicides in water under visible light irradiation. The catalysts were synthesized via a simple hydrothermal method and characterized by various analytical techniques, including SAXS, N-2 adsorption-desorption isotherms, Zeta potential, PL, FT-IR, XRF, TGA, and UV-DRS. Our study indicated that the 2.5Ti-SBA-15/C3N4 had higher efficiency in the degradation of 2,4-D than Ti-SBA-15 and C3N4. The decomposition of 2,4-D reached 60% under 180 minutes of visible light irradiation at room temperature on 2.5Ti-SBA-15/C3N4. Moreover, the degradation of 2,4-D on Ti-SBA-15/C3N4 was pseudo-first-order kinetics with the highest rate constant (0.00484 min(-1)), which was much higher than that obtained for other photocatalysts reported recently. Furthermore, the catalyst can be reused at least two times for photodegradation of 2,4-D solution under visible light irradiation within a slight decrease in catalytic activity.
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