Facile Synthesis of n-Fe3O4/ACF Functional Cathode for Efficient Dye Degradation through Heterogeneous E-Fenton Process

Peng, Wei; Niu, Wenjun; Paerhati, Sidike; Guo, Wenjian; Ma, Jingui; Hou, Junwei

doi:10.3390/catal12080879

Open AccessArticle

Facile Synthesis of n-Fe₃O₄/ACF Functional Cathode for Efficient Dye Degradation through Heterogeneous E-Fenton Process

by

Wei Peng

^1,2,

Wenjun Niu

¹,

Sidike Paerhati

¹,

Wenjian Guo

³,

Jingui Ma

²

and

Junwei Hou

^2,*

¹

Petro China Karamay Petrochemical Company, Karamay 834003, China

²

State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing at Karamy, Karamay 834000, China

³

Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay 834000, China

^*

Author to whom correspondence should be addressed.

Catalysts 2022, 12(8), 879; https://doi.org/10.3390/catal12080879

Submission received: 21 July 2022 / Revised: 9 August 2022 / Accepted: 9 August 2022 / Published: 11 August 2022

(This article belongs to the Section Catalytic Materials)

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Abstract

In order to put forward an efficient and eco-friendly approach to degrade dye-containing industrial effluents, an n-Fe₃O₄/ACF nanocomposite was synthesized using the facile precipitation method and applied as a functional cathode for a heterogeneous electro-Fenton (E-Fenton) process. In particular, optimal initial pH value, current density, pole plate spacing, and electrode area were confirmed through systematical experiments as 5.73, 30 mA/cm², 3 cm, and 2 × 2 cm², respectively. Under such optimal reaction conditions, 98% of the methylene blue (MB) was degraded by n-Fe₃O₄/ACF after 2 h of E-Fenton treatment. In addition, n-Fe₃O₄/ACF could still decolor about 90% of the methylene blue (MB) for five rounds with some reductions in efficiency. Furthermore, results of electrochemical impedance spectroscopy and heterogeneous E-Fenton performance tests indicated that the loading of metal material Fe₃O₄ could enhance the overall electron transport capacity, which could accelerate the whole degradation processes. Moreover, the rich pores and large specific surface area of n-Fe₃O₄/ACF provided many active sites, which could greatly improve the efficiency of O₂ reduction, promote the generation of H₂O₂, and shorten the reaction length between •OH and the pollutant groups.

Keywords: heterogeneous E-Fenton; dye degradation; functional cathode; Fe₃O₄; activated carbon fiber

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MDPI and ACS Style

Peng, W.; Niu, W.; Paerhati, S.; Guo, W.; Ma, J.; Hou, J. Facile Synthesis of n-Fe₃O₄/ACF Functional Cathode for Efficient Dye Degradation through Heterogeneous E-Fenton Process. Catalysts 2022, 12, 879. https://doi.org/10.3390/catal12080879

AMA Style

Peng W, Niu W, Paerhati S, Guo W, Ma J, Hou J. Facile Synthesis of n-Fe₃O₄/ACF Functional Cathode for Efficient Dye Degradation through Heterogeneous E-Fenton Process. Catalysts. 2022; 12(8):879. https://doi.org/10.3390/catal12080879

Chicago/Turabian Style

Peng, Wei, Wenjun Niu, Sidike Paerhati, Wenjian Guo, Jingui Ma, and Junwei Hou. 2022. "Facile Synthesis of n-Fe₃O₄/ACF Functional Cathode for Efficient Dye Degradation through Heterogeneous E-Fenton Process" Catalysts 12, no. 8: 879. https://doi.org/10.3390/catal12080879

APA Style

Peng, W., Niu, W., Paerhati, S., Guo, W., Ma, J., & Hou, J. (2022). Facile Synthesis of n-Fe₃O₄/ACF Functional Cathode for Efficient Dye Degradation through Heterogeneous E-Fenton Process. Catalysts, 12(8), 879. https://doi.org/10.3390/catal12080879

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Facile Synthesis of n-Fe₃O₄/ACF Functional Cathode for Efficient Dye Degradation through Heterogeneous E-Fenton Process

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