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Electrogeneration of hydrogen peroxide in neutral medium using PVDF-based air cathode for removing ofloxacin in wastewater.
- Source :
-
Journal of Solid State Electrochemistry . May2019, Vol. 23 Issue 5, p1455-1462. 8p. - Publication Year :
- 2019
-
Abstract
- PVDF-based gas diffusion electrode is synthesized in two steps: first, PVDF-based gas diffusion layer is produced by phase inversion and subsequently the product is electrochemically polymerized with polypyrrole and reduced graphene oxide. The manufactured GO@Pr@GDE toward O2 reduction reaction is studied as air cathode to generate H2O2, which can be further used to oxidize nonbiodegradable ofloxacin in a simple cell system. Although all the GDE samples have a similar configuration, GO@Pr@GDE shows the highest catalytic activity toward H2O2 production. The exchange current density of GO@Pr@GDE in Na2SO4 solution is 2.4 × 10−8 A cm−2, which is 6 times greater than that of Pr@GDE. Results of XRD, FTIR, and SEM characterization are consistent with GDE's electrochemical behavior, revealing that pyrrole polymerized on the pristine PVDF-based GDE can supply more conductive sites, and reduced GO plays the most important role in H2O2 production and achieving 69% removal efficiency of ofloxacin. [ABSTRACT FROM AUTHOR]
- Subjects :
- *HYDROGEN peroxide
*DIFFUSION
*CATHODES
*POLYPYRROLE
*GRAPHENE oxide
*MASS media use
Subjects
Details
- Language :
- English
- ISSN :
- 14328488
- Volume :
- 23
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Journal of Solid State Electrochemistry
- Publication Type :
- Academic Journal
- Accession number :
- 136406327
- Full Text :
- https://doi.org/10.1007/s10008-019-04241-5