Novel rolling-made gas-diffusion electrode loading trace transition metal for efficient heterogeneous electro-Fenton-like. Issue 4 (December 2016)

• Record Type: Journal Article
• Authors: Liang, Liang; An, Yiran; Zhou, Minghua; Yu, Fangke; Liu, Mengmeng; Ren, Gengbo
• Is Part Of: Journal of environmental chemical engineering. Volume 4:Issue 4(2016:Dec.)Part A
• Page Start: 4400
• Page End: 4408
• Publication Date: 2016-12
• Subjects: Electro-Fenton-like -- Heterogeneous oxidation -- Gas-diffusion electrode -- Methyl orange -- Transition metals; Chemical engineering -- Environmental aspects -- Periodicals; Environmental engineering -- Periodicals; Chemical engineering -- Environmental aspects; Environmental engineering; Periodicals; 660.0286
• DOI: 10.1016/j.jece.2016.10.006
• Languages: English
• ISSNs: 2213-2929

Abstract

Abstract: A novel rolling-made gas-diffusion electrode loading with trace transition metal (M/GDE, M = Cu, Ce, Mn, Fe, Co) was prepared and used as cathode in heterogeneous electro-Fenton-like (EF-like) for methyl orange (MO) degradation. The rolling-made GDE showed a good activity and stability for H2 O2 production, with a H2 O2 concentration of 595 mg/L at 120 min and variation within 3.36% even after 10 times reuses. The effect of five metals and their loading contents on MO degradation were investigated, and the Co/GDE showed the highest activity when the loading content of Co was 0.7 wt%. Particularly this activity showed good stability toward pH variation (3–9), demonstrating promising advantage of this heterogeneous EF-like for application. Further it was proved that hydroxyl radical played an important role on pollutants degradation, and a possible degradation scheme for heterogeneous EF-like on Co/GDE was proposed based on the results and characterizations such as scanning electron microscopy (SEM), energy dispersive X-ray (EDX) and X-ray diffraction (XRD).