• 关键词：AEO-7改性PbO₂电极  阳极氧化  电催化降解  结晶紫

• 基金项目：国家自然科学基金(No. 50964008)

• 范莹莹
• 1. 昆明理工大学理学院, 昆明 650500;
  2. 昆明理工大学环境科学与工程学院, 昆明 650500

• 陈阵
• 昆明理工大学理学院, 昆明 650500

• 朱红权
• 昆明理工大学理学院, 昆明 650500

• 李佳莹
• 昆明理工大学理学院, 昆明 650500

• 林强
• 昆明理工大学环境科学与工程学院, 昆明 650500

• 摘要：通过在镀液中添加表面活性剂AEO-7,以不锈钢为基体,利用阳极氧化法制备了改性PbO₂电极.同时,在结晶紫模拟废水中对比了改性前后PbO₂电极的阳极极化曲线和塔菲尔曲线,并对质量浓度为10 mg·L^-1的结晶紫模拟废水进行了电催化降解实验.实验结果表明,制备的改性PbO₂电极对结晶紫废水的降解显示出了较好的电催化活性,最佳电解实验条件为:电解电流密度30 mA·cm^-2,支持电解质Na₂SO₄浓度5 g·L^-1,处理温度35℃,在此条件下电解40 min后,结晶紫的去除率可达到90%以上.

• Abstract：A set of PbO₂ electrode modified by surface active agent AEO-7 was prepared on stainless steel substrate by anodic oxidation. The polarization curves and Tafel curves of modified and unmodified PbO₂ electrodes were compared in simulated crystal violet wastewater. The electrocatalytic degradation experiment was carried out in simulated wastewater with 10 mg·L^-1 crystal violet. It was found that the modified electrode showed better electrocatalytic activity than the unmodified one. The optimum process conditions were determined as follows: current density 30 mA·cm^-2, electrolyte Na₂SO₄ concentration 5 g·L^-1, and treatment temperature 35℃. After 40 min of electrolysis, the removal rate of crystal violet can reach above 90%.

• Key words：PbO₂ electrode modified by AEO-7  anodic oxidation  electrocatalytic degradation  crystal violet

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