CuO improved (Sn,Sb)O2 ceramic anodes for electrochemical advanced oxidation processes
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Show full item recordcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/176601
comunitat-uji-handle3:10234/176618
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INVESTIGACIONMetadata
Title
CuO improved (Sn,Sb)O2 ceramic anodes for electrochemical advanced oxidation processesAuthor (s)
Date
2018-12Publisher
American Ceramic SocietyBibliographic citation
SÁNCHEZ‐RIVERA, María‐José, et al. CuO improved (Sn, Sb) O2 ceramic anodes for electrochemical advanced oxidation processes. International Journal of Applied Ceramic Technology. 2018; 1 – 12Type
info:eu-repo/semantics/articlePublisher version
https://ceramics.onlinelibrary.wiley.com/doi/full/10.1111/ijac.13149Version
info:eu-repo/semantics/submittedVersionSubject
Abstract
Antimony‐doped tin oxide electrodes with CuO as sintering aid are presented as an economical alternative to metal‐based electrodes, intended for the electrooxidation process of emerging and recalcitrant organic ... [+]
Antimony‐doped tin oxide electrodes with CuO as sintering aid are presented as an economical alternative to metal‐based electrodes, intended for the electrooxidation process of emerging and recalcitrant organic contaminants in wastewaters. The CuO proportion has been optimized to obtain densified electrodes with a mild thermal cycle (Tmax = 1200°C). One of the manufactured electrodes (97.8 mol.% of SnO2, 1.0 mol.% of Sb2O3, and 1.2 mol.% of CuO) was selected for electrochemical characterization from a physical and morphological analysis. The electrochemical behavior of the selected electrode showed that the addition of CuO as sintering aid widens the electrochemical window and increases the electrode “inactivity”, with respect to an (Sn, Sb)O2 electrode synthesized in the same conditions. In return, the (Sn,Sb,Cu)O2 electrode presents a significantly lower electrochemical rugosity factor. Moreover, the addition of CuO does not change the oxygen evolution reaction mechanism, but it modifies the kinetic parameters, leading to a larger accumulation of hydroxyl radicals. Consequently, the addition of CuO as sintering aid significantly improves the electrochemical properties of the electrode as an electrochemical advanced oxidation process anode with respect to the (Sn,Sb)O2 electrode, at the expense of worsening its electrochemical roughness factor. The results of the electrochemical characterization were confirmed by Norfloxacin degradation tests. [-]
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Ministerio de Economía y Competitividad (CTQ2015- 65202-C2-1-R and CTQ2015-65202-C2-2-R)Rights
© 2018 The American Ceramic Society
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