Optimizing RuOx−TiO2 composite anodes for enhanced durability in electrochemical water treatments

作者: Hyeona Park , Naresh Mameda , Chi-Wang Li , Hye Won Jeong , Hyunwoong Park

DOI: 10.1016/J.CHEMOSPHERE.2020.129166

关键词:

摘要: Abstract Metal oxide anode electrocatalysts are important for an effective removal of contaminants and the enhancement electrode durability in electrochemical oxidation process. Herein, we report enhanced lifetime RuOx−TiO2 composite anodes that was achieved by optimizing fabrication conditions (e.g., Ru mole fraction, total metal content, calcination time). The assessed through accelerated service tests conducted under harsh environmental conditions, using 3.4% NaCl 1.0 A/cm2. characteristics prepared with oxides having different compositions were evaluated cyclic voltammetry, impedance spectroscopy, X-ray analyses. We noticed that, larger more durable electrodes. electrodes found to be highly stable when fraction >0.7. 0.8RuOx−0.2TiO2 selected as one most appropriate composition, considering both its stability contaminant treatability. underwent a 7-h (between 1 10 h) showed longest tested because formation structure (i.e., RuO3) lower resistance charge transfer. deactivation mechanism occurred due dissolution active catalysts over time evidenced analysis itself surface elemental mapping.

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