Degradation Properties of Ti/Sb-SnO₂ Electrodes Containing Different Intermediate Layers for Phenol

Abstract:

The electrocatalytic degradation performances of the Ti/Sb-SnO₂ electrodes with Ni, Co and Mn intermediate layers prepared by thermal oxidation for phenol were studied. The microstructure and morphology of the intermediate layers and the outer active layers were characterized by XRD, SEM and EDX. The content of phenol and intermediate material degraded with different electrodes in the phenol solution was compared by UV-Vis spectrophotometer and measuring COD. In the meantime, the influence of different intermediate layers on the service life of anode was investigated by the accelerated life test. The experimental results showed that, after 10h, the phenol degradation efficiency with Ti/Ni/Sb-SnO₂ electrode almost reached 100% and the COD was 18mg/L, but the electrode was irreversibly damaged within 20min under the accelerated life test. Comparing with Ti/Ni/Sb-SnO₂, the degradation efficiency of phenol in Ti/Co/Sb-SnO₂ electrode was worse because the COD was 43mg/L, but the accelerated life was 20.8h. For Ti/Mn/Sb-SnO₂ electrode, the COD was only 50mg/L, but the accelerated life reached to 289h. Therefore it may be concluded that the different intermediate layers have a notable effect on the structure, morphology, service life and the electrocatalytic activity of anode.

• Periodical: Materials Science Forum (Volumes 743-744)
• Pages: 420-426
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.743-744.420
• Online since: January 2013
• Authors: Zhen Zhang, Qian Qian Sun, Yin Ping Si
• Keywords: Electrocatalytic Oxidation, Phenol Solution, Service Life of Electrode, Ti/Sb-SnO₂ Electrode

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