Bimetallic modified halloysite particle electrode enhanced electrocatalytic oxidation for the degradation of sulfanilamide. (15th June 2022)

• Record Type: Journal Article
• Authors: Bu, Jiaqi; Deng, Zhiwei; Liu, Hui; Li, Tianhao; Yang, Yanjing; Zhong, Shian
• Is Part Of: Journal of environmental management. Volume 312(2022)
• Publication Date: 2022-06-15
• Subjects: Sulfanilamide -- Three-dimensional electrocatalytic oxidation -- Bimetallic oxide -- Halloysite particle electrode -- Degradation; Environmental policy -- Periodicals; Environmental management -- Periodicals; Environment -- Periodicals; Ecology -- Periodicals; 363.705
• DOI: 10.1016/j.jenvman.2022.114975
• Languages: English
• ISSNs: 0301-4797

Abstract

Abstract: The treatment of antibiotics wastewater by electrocatalytic oxidation has attracted much attention. In the paper, a novel halloysite bimetallic (HLS-Cu-Mn) particle electrode material was prepared and a bench-scale electrocatalytic reaction tank was designed. A three-dimensional electrocatalytic oxidation reactor composed of HLS-Cu-Mn and a bench-scale electrocatalytic reaction tank was used to degrade Sulfanilamide (SA) wastewater. Characterization of the synthesized material was conducted with Scanning electron microscopy (SEM), X-ray polycrystalline powder diffractometer (XRD), X-ray photoelectron spectroscopy (XPS), and Brunauer-Emmett-Teller (BET). The electron spin resonance spectroscopy test results confirmed that HLS-Cu-Mn produced a large number of OH. The electrochemical workstation confirmed that HLS-Cu-Mn had strong electrocatalytic activity and repolarization ability. Under the optimum preparation conditions and degradation process parameters, the removal efficiency of SA and TOC was 99.84% and 88.95% respectively. The method also has good degradation efficiency for aniline, phenol, herbicides, antibiotics, and dyeing wastewater. It was found that 4 main intermediates appeared in the degradation process by Ultra-high performance liquid chromatography/triple tandem quadrupole mass spectrometry (LC-MS). In sum, it was believed that this work provides a new vision and idea for water treatment. Graphical abstract: Image 1 Highlights: Halloysite bimetallic particle electrode (HLS-Cu-Mn) was prepared for the first time. A bench-scale electrocatalytic reaction tank was designed. The electrocatalytic system composed of HLS-Cu-Mn was used to degrade sulfonamide. The removal efficiency of sulfonamide and TOC was 99.84% and 88.95%. The HLS-Cu-Mn particle electrode has good structural stability.