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Article

Preparation of Fe3O4/NiO Nanomaterials by Electrodeposition and Their Adsorption Performance for Fluoride Ions

1
School of Mechatronics Engineering, Qiqihar University, Qiqihar 161006, China
2
Northeast Petroleum University, Daqing 163318, China
3
The Engineering Technology Research Center for Precision Manufacturing Equipment and Industrial Perception of Heilongjiang Province, Qiqihar 161006, China
4
College of Engineering, Northeast Agricultural University, Harbin 150030, China
*
Authors to whom correspondence should be addressed.
Coatings 2024, 14(6), 739; https://doi.org/10.3390/coatings14060739
Submission received: 6 May 2024 / Revised: 8 June 2024 / Accepted: 9 June 2024 / Published: 11 June 2024
(This article belongs to the Section Environmental Aspects in Colloid and Interface Science)

Abstract

The high concentration of fluoride ions in industrial wastewater poses a threat to both human safety and the ecological environment. In this paper, three types of magnetic NiO nanomaterial (MNN) with nickel–iron ratios of 3:1, 2:1, and 1:2 were successfully prepared using the electrodeposition technique to eliminate fluoride ions (F) from industrial wastewater. The surface morphology, phase composition, and chemical structure of the nanomaterials were analyzed using scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD). The results demonstrate the MNN material’s exceptional adsorption capabilities for fluoride ions (F) at a nickel–iron ratio of 3:1, with a maximum adsorption capacity of up to 58.3 mg/g. The adsorption process of fluoride on the MNN material was further examined using Langmuir and pseudo-second-order kinetic models, revealing predominantly monolayer adsorption and chemisorption characteristics. When the amount of FeSO4•9H2O added is minimal, only the distinctive peaks of NiO are visible in the product’s spectrum. However, as the Ni/Fe ratio decreases, characteristic peaks of Fe3O4 crystals begin to appear and gradually intensify, indicating an increase in Fe3O4 content within the MNN material. Additionally, the pH level significantly affects the adsorption of fluoride ions (F) onto the MNN material, with the highest adsorption capacity observed at pH 7.
Keywords: NiO nanomaterial; electrodeposition; structure; phase composition; adsorption capacity NiO nanomaterial; electrodeposition; structure; phase composition; adsorption capacity

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MDPI and ACS Style

Zhang, H.; Li, Z.; Ma, C.; He, H.; Wei, L.; Xia, F. Preparation of Fe3O4/NiO Nanomaterials by Electrodeposition and Their Adsorption Performance for Fluoride Ions. Coatings 2024, 14, 739. https://doi.org/10.3390/coatings14060739

AMA Style

Zhang H, Li Z, Ma C, He H, Wei L, Xia F. Preparation of Fe3O4/NiO Nanomaterials by Electrodeposition and Their Adsorption Performance for Fluoride Ions. Coatings. 2024; 14(6):739. https://doi.org/10.3390/coatings14060739

Chicago/Turabian Style

Zhang, Hongbin, Zhiping Li, Chunyang Ma, Hongxin He, Lixin Wei, and Fafeng Xia. 2024. "Preparation of Fe3O4/NiO Nanomaterials by Electrodeposition and Their Adsorption Performance for Fluoride Ions" Coatings 14, no. 6: 739. https://doi.org/10.3390/coatings14060739

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