ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Facile preparation of iron-anchored graphite cloth through salt immersion and sintering approaches and its application to the electro-Fenton catalytic system as a cathode

Songlin Chen and Congliang Cheng

College of Environmental and Chemical Engineering, Anhui Vocational and Technical College, Hefei, People’s Republic of China

E-mail: cclp321321@163.comn

Received: 17 February 2022  Accepted: 28 April 2022

Abstract:

The challenges associated with electro-Fenton during water treatment involve changing the traditional cathode to one showing high efficiency, low cost, and easy preparation. H₂O₂ electrogeneration in the electro-Fenton process can be promoted by a transition metal-doped cathode. Therefore, an iron-doped cathode can greatly enhance H₂O₂ production and promote the Fenton reaction to lend efficient pollutant degradation ability. This study proposes a low-cost and easy-prepared iron-deposited graphite cloth cathode (G-Fe). The presence of iron renders G-Fe conductive and supports the active sites for H₂O₂ production. Aeration was a critical factor for H₂O₂ electrogeneration. A total of 17.126 and 8.345 mg/L H₂O₂ was produced from the G-Fe surface, with and without the aeration condition (current density of 100 mA/m² in 60 min with a neutral pH), respectively. The degradation rate of methyl orange with a cathode of G-Fe with aeration at 100 mA/m² was 97.5%, which was higher than the value obtained with graphite cloth as the cathode in an aeration environment or in G-Fe without aeration.

Keywords: electro-Fenton; Graphite cloth; Carbonaceous; Wastewater treatment

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-022-02258-1

Chemical Papers 76 (10) 6427–6435 (2022)