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Institutional Repository [SANDBOX]
Technical University of Crete
Technical University of Crete
EN
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EL
| URI | http://purl.tuc.gr/dl/dias/AD24DFB8-32FB-47C1-8803-29984A89A154 | - |
| Identifier | https://doi.org/10.1016/j.cattod.2010.02.076 | - |
| Language | en | - |
| Extent | 4 | en |
| Title | Anodic oxidation of phenol on Ti/IrO2 electrode: Experimental studies | en |
| Creator | Efthalia Chatzisymeon | en |
| Creator | Stéphane Fierro | en |
| Creator | Karafyllis Iason | en |
| Creator | Καραφυλλης Ιασων | el |
| Creator | Mantzavinos Dionysis | en |
| Creator | Μαντζαβινος Διονυσης | el |
| Creator | Kalogerakis Nikos | en |
| Creator | Καλογερακης Νικος | el |
| Creator | Katsaounis Alexandros | en |
| Creator | Κατσαουνης Αλεξανδρος | el |
| Publisher | Elsevier | en |
| Description | Δημοσίευση σε επιστημονικό περιοδικό | el |
| Content Summary | The electrochemical oxidation of acidic solutions of phenol on a Ti/IrO2 anode has been investigated by cyclic voltammetry and bulk electrolysis in a single-compartment cell. In the potential region of oxygen evolution, anodic oxidation resulted in electrode passivation (as evidenced by voltammetric measurements) allegedly due to the formation of a polymeric film on its surface. Phenol degradation increased with increasing temperature in the range investigated 30–80 °C and it was affected by the addition of Cl− and Br− anions in the supporting electrolyte. Complete conversion of 10 mM phenol was achieved after 37 Ah L−1 of charge passed at 80 °C under galvanostatic conditions (50 mA cm−2) in absence of Cl−. In contrast only 10 Ah L−1 were needed in the presence of 35 mM Cl−. The presence of chloride can induce reactions involving chlorohydroxyl radicals and electrogenerated oxidants such as free chlorine. On the other hand, addition of Br− slightly inhibited degradation possibly due to bromide scavenging of electrogenerated active species. Phenol degradation proceeded through the formation of three dominant, aromatic intermediates, namely 1,4-benzoquinone, hydroquinone and pyrocatechol, while total oxidation to CO2 was not significant unless harsh conditions (i.e. high temperatures and charges) were employed. | en |
| Type of Item | Peer-Reviewed Journal Publication | en |
| Type of Item | Δημοσίευση σε Περιοδικό με Κριτές | el |
| License | http://creativecommons.org/licenses/by/4.0/ | en |
| Date of Item | 2015-10-14 | - |
| Date of Publication | 2010 | - |
| Subject | DSA® electrodes | en |
| Subject | Electrochemical oxidation | en |
| Subject | Ti/IrO2 | en |
| Subject | Phenol | en |
| Subject | Organic transformation | en |
| Subject | Wastewater treatment | en |
| Bibliographic Citation | E.Chatzisymeon ,S. Fierro ,I. Karafyllis , D.Mantzavinos ,N. Kalogerakis, and A.Katsaounis, "Anodic oxidation of phenol on Ti/IrO2 electrode: Experimental studies," Catalysis Today, vol. 151, no. 1-2, pp. 185–189, Prl. 2010. doi: 10.1016/j.cattod.2010.02.076 | en |
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