Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/153081
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Medel, Alejandro | - |
dc.contributor.author | Treviño-Reséndez, José | - |
dc.contributor.author | Brillas, Enric | - |
dc.contributor.author | Meas, Yunny | - |
dc.contributor.author | Sirés Sadornil, Ignacio | - |
dc.date.accessioned | 2020-03-19T10:34:05Z | - |
dc.date.available | 2021-12-03T06:10:18Z | - |
dc.date.issued | 2019-12-03 | - |
dc.identifier.issn | 0013-4686 | - |
dc.identifier.uri | http://hdl.handle.net/2445/153081 | - |
dc.description.abstract | The degradation of organic pollutants in water by electro-oxidation (EO) process is a very active research topic, but it has been pre-eminently focused on the development of anodes with enhanced electrocatalytic ability to produce ●OH at their surface. Conversely, the degradation pathways that may arise from the potential ●OH production at the cathode surface are often disregarded. This work discusses the contribution of ●OH, formed at a Ti, graphite, stainless steel or Pt cathode from the reduction of O2 or H2O2, to phenol oxidation in 0.5 mol dm-3 H2SO4 medium. The OH production in the cathodic compartment of a divided cell was assessed from coumarin oxidation monitored via UV/Vis spectroscopy and HPLC with a fluorescence detector, salicylic acid oxidation evaluated by HPLC with a photodiode array detector and electron paramagnetic resonance. It was demonstrated that the production depended on the cathode nature, decreasing as: Pt > graphite >> stainless steel > Ti. It was concluded that a two-electron reaction converted O2 to H2O2, which was monoelectronically reduced to ●OH. The results reveal the importance of cathode selection in water treatment by EO. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Elsevier Ltd | - |
dc.relation.isformatof | Versió postprint del document publicat a: https://doi.org/10.1016/j.electacta.2019.135382 | - |
dc.relation.ispartof | Electrochimica Acta, 2019, vol. 331, num. 135382 | - |
dc.relation.uri | https://doi.org/10.1016/j.electacta.2019.135382 | - |
dc.rights | cc-by-nc-nd (c) Elsevier Ltd, 2019 | - |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es | - |
dc.source | Articles publicats en revistes (Ciència dels Materials i Química Física) | - |
dc.subject.classification | Depuració d'aigües residuals | - |
dc.subject.classification | Oxidació electroquímica | - |
dc.subject.other | Purification of sewage | - |
dc.subject.other | Electrolytic oxidation | - |
dc.title | Contribution of cathodic hydroxyl radical generation to the enhancement of electro-oxidation process for water decontamination | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/acceptedVersion | - |
dc.identifier.idgrec | 693887 | - |
dc.date.updated | 2020-03-19T10:34:06Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Ciència dels Materials i Química Física) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
693887.pdf | 1.43 MB | Adobe PDF | View/Open |
This item is licensed under a Creative Commons License