Degradation of 4-nitrophenol in wastewater by nickel-iron nanocatalysts

Thanh Thien Co; Ngoc Hai Yen Nguyen; Thi Ngoc Quynh Tran; Minh Nguyet Huynh; Ha Minh Thu Thai; Thi Bich Phuong Vo; Thi Yen Nhi Nguyen

doi:10.62239/jca.2024.077

Authors

Thanh Thien Co University of Science-VNUHCM Author
Ngoc Hai Yen Nguyen University of Science-VNUHCM Author
Thi Ngoc Quynh Tran University of Science-VNUHCM Author
Minh Nguyet Huynh University of Science-VNUHCM Author
Ha Minh Thu Thai University of Science-VNUHCM Author
Thi Bich Phuong Vo University of Science-VNUHCM Author
Thi Yen Nhi Nguyen University of Science-VNUHCM Author

DOI:

https://doi.org/10.62239/jca.2024.077

Keywords:

4-Nitrophenol, NiFe nanoparticles, nanocatalyst

Abstract

Nickel-iron (NiFe) nanoparticles supported on activated carbon were synthesized using NaBH₄ as a reducing agent and PVP as a stabilizing agent to prevent the nanoparticles from agglomerating or oxidizing. The entire process is carried out under an inert atmosphere to further prevent oxidation and ensure the purity of the NiFe nanoparticles. The physicochemical properties of the resulting NiFe/C samples were analyzed using SEM, TEM, BET, EDX, and XRD techniques. The NiFe nanoparticles, ranging from 3-11 nm, were evenly dispersed on the activated carbon, exhibiting a specific surface area of 850 m²/g. A complete conversion (100%) of 4-Nitrophenol within a 6-hour reaction period indicates that the catalyst is highly effective. This suggests that the Nickel-Iron (NiFe) nanoparticles supported on activated carbon are performing exceptionally well in the oxidation reaction to detoxify 4-NP. This study provides a comprehensive understanding of the synthesis, structure, composition, and catalytic performance of the NiFe nanocatalyst.

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