Stable and recyclable Fe3C@CN catalyst supported on carbon felt for efficient activation of peroxymonosulfate

Chuanyi Guo; Chaofa Chen; Jiaying Lu; Du Fu; Cheng-Zong Yuan; Xi-Lin Wu; Kwun Nam Hui; Jianrong Chen

doi:10.1016/j.jcis.2021.04.092

Stable and recyclable Fe₃C@CN catalyst supported on carbon felt for efficient activation of peroxymonosulfate

J Colloid Interface Sci. 2021 Oct:599:219-226. doi: 10.1016/j.jcis.2021.04.092. Epub 2021 Apr 20.

Authors

Chuanyi Guo¹, Chaofa Chen¹, Jiaying Lu¹, Du Fu¹, Cheng-Zong Yuan², Xi-Lin Wu³, Kwun Nam Hui², Jianrong Chen⁴

Affiliations

¹ College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China.
² Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau SAR, China.
³ College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China. Electronic address: dbwxl@zjnu.cn.
⁴ College of Geography and Environmental Science, Zhejiang Normal University, Jinhua 321004, China. Electronic address: cjr@zjnu.cn.

PMID: 33945969
DOI: 10.1016/j.jcis.2021.04.092

Abstract

Stable and recyclable catalysts are crucial to the peroxymonosulfate (PMS) based advanced oxidation process (AOPs) for wastewater treatment. Herein, nitrogen-rich carbon wrapped Fe₃C (Fe₃C@CN) on carbon felt (CF) substrate was synthesized by using Prussian blue (PB) loaded CF as the precursors. The obtained Fe₃C@CN/CF catalyst was applied for degradation of bisphenol A (BPA) via the heterogeneous catalytic activation of PMS. Results showed that ~91.7%, 95.2%, 98.1% and 99.1% of BPA (20 mg/L) were eliminated in the Fe₃C@CN/CF + PMS system within 4, 10, 20 and 30 min, respectively. The fast degradation kinetics is attributed to the production of abundant reactive species (OH, SO₄^- and ¹O₂) in the Fe₃C@CN/CF + PMS system, as demonstrated by the electron paramagnetic resonance spectroscopy and quench experiments. The Fe₃C@CN/CF catalyst was stable and can be easily recycled by using an external magnet. The results indicated that the nanoconfined Fe₃C endowed Fe₃C@CN/CF with high stability and magnetic property and enabled the efficient electron transfer for PMS activation. This study provides a cost-effective approach for the fabrication of stable and recyclable Fe₃C@CN/CF catalyst, and shed a new light on the rational design of multifunctional catalyst for advanced water remediation.

Keywords: Bisphenol A; Nanoconfined; Peroxymonosulfate; Singlet oxygen; Three-dimensional.