Back to Search
Start Over
A carbon felt cathode modified by acidic oxidised carbon nanotubes for the high H 2 O 2 generation and its application in electro-Fenton.
- Source :
-
Environmental technology [Environ Technol] 2024 Apr; Vol. 45 (9), pp. 1669-1682. Date of Electronic Publication: 2022 Dec 06. - Publication Year :
- 2024
-
Abstract
- Herein, a carbon felt (CF) cathode modified by the acidic oxidised carbon nanotubes (OCNTs) exhibited a high yield of the H <subscript>2</subscript> O <subscript>2</subscript> generation in electro-Fenton. Rotating disk electrode (RDE) measurements showed that the selective generation of H <subscript>2</subscript> O <subscript>2</subscript> occurred on the CF cathode coated by OCNTs (OCNTs/CF), which was attributed to the high amount of oxygen-containing functional groups in OCNTs. Moreover, the pollutant degradation efficiency could almost reach 100% within 60 min in electro-Fenton with OCNTs/CF as the cathode. Furthermore, the pollutant removal efficiency was kept constant after five consecutive cycles, indicating the high stability of OCNTs/CF cathode. Besides, the hydrophilicity of OCNTs/CF cathode was significantly enhanced owing to the abundant oxygen-contained functional groups on the surface of the OCNTs/CF cathode, which facilitated the mass transfer between the OCNTs/CF cathode and the reactants in the bulk solution. To reveal the possible mechanism in electro-Fenton equipped with the OCNTs/CF cathode, quenching experiments and electron paramagnetic resonance (EPR) investigations were further conducted. This work provided valuable insights into the fabrication of the non-metallic cathode with a high ability towards H <subscript>2</subscript> O <subscript>2</subscript> generation in electro-Fenton for efficient pollutant removal.
Details
- Language :
- English
- ISSN :
- 1479-487X
- Volume :
- 45
- Issue :
- 9
- Database :
- MEDLINE
- Journal :
- Environmental technology
- Publication Type :
- Academic Journal
- Accession number :
- 36408871
- Full Text :
- https://doi.org/10.1080/09593330.2022.2150093