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Article

Fe3O4@C Nanoparticles Synthesized by In Situ Solid-Phase Method for Removal of Methylene Blue

1
School of Chemical Engineering, Sichuan University, Ministry of Education Research Center for Comprehensive Utilization and Clean Processing Engineering of Phosphorus Resources, Chengdu 610065, China
2
College of Chemistry and Chemical Engineering, Yibin University, Yibin 644000, China
*
Authors to whom correspondence should be addressed.
Nanomaterials 2021, 11(2), 330; https://doi.org/10.3390/nano11020330
Received: 2 January 2021 / Revised: 21 January 2021 / Accepted: 22 January 2021 / Published: 27 January 2021
Fe3O4@C nanoparticles were prepared by an in situ, solid-phase reaction, without any precursor, using FeSO4, FeS2, and PVP K30 as raw materials. The nanoparticles were utilized to decolorize high concentrations methylene blue (MB). The results indicated that the maximum adsorption capacity of the [email protected] nanoparticles was 18.52 mg/g, and that the adsorption process was exothermic. Additionally, by employing H2O2 as the initiator of a Fenton-like reaction, the removal efficiency of 100 mg/L MB reached ~99% with Fe3O4@C nanoparticles, while that of MB was only ~34% using pure Fe3O4 nanoparticles. The mechanism of H2O2 activated on the Fe3O4@C nanoparticles and the possible degradation pathways of MB are discussed. The Fe3O4@C nanoparticles retained high catalytic activity after five usage cycles. This work describes a facile method for producing Fe3O4@C nanoparticles with excellent catalytic reactivity, and therefore, represents a promising approach for the industrial production of Fe3O4@C nanoparticles for the treatment of high concentrations of dyes in wastewater. View Full-Text
Keywords: Fe3O4@C nanoparticles; solid-phase method; adsorption; Fenton-like reaction; methylene blue Fe3O4@C nanoparticles; solid-phase method; adsorption; Fenton-like reaction; methylene blue
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MDPI and ACS Style

Xiang, H.; Ren, G.; Zhong, Y.; Xu, D.; Zhang, Z.; Wang, X.; Yang, X. Fe3O4@C Nanoparticles Synthesized by In Situ Solid-Phase Method for Removal of Methylene Blue. Nanomaterials 2021, 11, 330. https://doi.org/10.3390/nano11020330

AMA Style

Xiang H, Ren G, Zhong Y, Xu D, Zhang Z, Wang X, Yang X. Fe3O4@C Nanoparticles Synthesized by In Situ Solid-Phase Method for Removal of Methylene Blue. Nanomaterials. 2021; 11(2):330. https://doi.org/10.3390/nano11020330

Chicago/Turabian Style

Xiang, Hengli, Genkuan Ren, Yanjun Zhong, Dehua Xu, Zhiye Zhang, Xinlong Wang, and Xiushan Yang. 2021. "Fe3O4@C Nanoparticles Synthesized by In Situ Solid-Phase Method for Removal of Methylene Blue" Nanomaterials 11, no. 2: 330. https://doi.org/10.3390/nano11020330

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