教師資料查詢 | 類別: 期刊論文 | 教師: 李奇旺 Chi-Wang Li (瀏覽個人網頁)

標題:Optimizing RuOx−TiO2 composite anodes for enhanced durability in electrochemical water treatments
學年
學期
出版(發表)日期2021/02/01
作品名稱Optimizing RuOx−TiO2 composite anodes for enhanced durability in electrochemical water treatments
作品名稱(其他語言)
著者Hyeona Park; Naresh Mameda; Chi-Wang Li; Hye Won Jeong; Hyunwoong Park; Kwang-Ho Choo
單位
出版者
著錄名稱、卷期、頁數Chemosphere 265, 129166
摘要Metal oxide anode electrocatalysts are important for an effective removal of contaminants and the enhancement of electrode durability in the electrochemical oxidation process. Herein, we report the enhanced lifetime of RuOx−TiO2 composite anodes that was achieved by optimizing the fabrication conditions (e.g., the Ru mole fraction, total metal content, and calcination time). The electrode durability was assessed through accelerated service lifetime tests conducted under harsh environmental conditions, by using 3.4% NaCl and 1.0 A/cm2. The electrochemical characteristics of the anodes prepared with metal oxides having different compositions were evaluated using cyclic voltammetry, electrochemical impedance spectroscopy, and X-ray analyses. We noticed that, the larger the Ru mole fraction, the more durable were the electrodes. The RuOx−TiO2 electrodes were found to be highly stable when the Ru mole fraction was >0.7. The 0.8RuOx−0.2TiO2 electrode was selected as the one with the most appropriate composition, considering both its stability and contaminant treatability. The electrodes that underwent a 7-h calcination (between 1–10 h) showed the longest lifetime under the tested conditions, because of the formation of a stable Ru oxide structure (i.e., RuO3) and a lower resistance to charge transfer. The electrode deactivation mechanism that occurred due to the dissolution of active catalysts over time was evidenced by an impedance analysis of the electrode itself and surface elemental mapping.
關鍵字RuO2−TiO2 composite;Electrode durability;Service life;Calcination;Deactivation
語言英文(美國)
ISSN1879-1298
期刊性質國外
收錄於SCI;
產學合作
通訊作者
審稿制度
國別英國
公開徵稿
出版型式,電子版,紙本
相關連結
SDGs
  • 潔淨水與衛生
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