纳米铂钌/碳微粒石墨电极催化氧化有机污染物的研究

Eletrocatalytic Oxidation for Organic Pollutant on the Nanoparticle PtRu/C Coated Graphite Electrode

采用沉积-还原法制备了PtRu/C纳米催化剂,将其固定在石墨表面制成电极。采用循环伏安法研究了铂钌/碳微粒石墨电极对有机小分子代表性物质甲醇的电催化氧化行为。结果表明:在酸性、中性和碱性介质中铂钌/碳微粒石墨电极对甲醇的电催化氧化性能均远远优于光滑铂片电极。在催化氧化降解甲醇和甲基橙时,铂钌/碳微粒石墨电极的平均氧化电流效率是光滑铂片电极的数倍,进一步表明铂钌/碳微粒石墨电极对有机污染物具有良好的催化氧化降解能力。

The PtRu/C catalyst has been prepared by deposition-reduction method. And electrode was prepared to coat the catalyst on the graphite. The electrochemical behaviors of two kinds of electrode for methanol have been investigated by cyclic voltammetry. The results showed that the nanoparticle PtRu/C coated graphite electrode had a much better electrocatalytic property for methanol than smooth platinum electrode in acidic, neutral or alkaline medium. The values of average current efficiency on the nanoparticle PtRu/C coated graphite electrode were times of that on smooth platinum when degrading methanol and methyl orange. This demonstrated that the nanoparticle PtRu/C coated graphite electrode had stronger ability to degrade organic pollutants.