Abstract
A low-cost, safe, and environmentally friendly preparation method, TiO2 reduced with self-made TiH2 via industrial tailing titanium powder, is successfully carried out to fabricate Ti4O7 powder, then a Ti4O7 electrode is prepared by the current powder and used to degrade methylene blue (MB). The phase, morphology, and conductivity of the Ti4O7 powder and electrode are studied, showing that our method can obtain a single-phase powder at a lower temperature, and the Ti4O7 electrode conductivity (1048.6 S/cm) is 44.2% higher than the graphite electrode. The effects of current density, electrolyte concentration, and initial MB concentration on MB removal rate are studied. These results show that both low and high concentrations of MB could achieve rapid degradation in the electrochemical oxidation system using the Ti4O7 electrode under low current density (10 mA/cm2), and the removal rate is better than other electrode materials including Pt, Ti/SnO2 and Pt/MnO2. In addition, the kinetic process of electrochemical oxidation and degradation of MB on Ti4O7 electrode is investigated and conformed to the first-order kinetic model.
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The data sets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.
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This work was funded by the National Nature Science Foundation of China (52174347).
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Xiong, F., Ye, J., Liu, Y. et al. High-Performance Electrochemical Degradation of Methylene Blue by a Ti4O7 Anode Prepared via Industrial Tailing Titanium Powder. J. Electron. Mater. 51, 3560–3568 (2022). https://doi.org/10.1007/s11664-022-09596-6
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DOI: https://doi.org/10.1007/s11664-022-09596-6