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负载Sb掺杂SnO2瓷环粒子电极的制备及电催化性能

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Abstract:

通过浸渍法制备负载Sb掺杂SnO2的石英微孔瓷环粒子电极。采用扫描电子显微镜、能量色散X射线能谱和X射线衍射对粒子电极的形貌及晶相组成进行表征;以除草剂废水为研究对象,优化了粒子电极的催化反应参数。结果表明所制备的粒子电极表面负载了Sb掺杂SnO2晶体,并且孔径增大,有利于电解液的传质,因而提高了电催化氧化反应的效率。当槽电压为10V、电极间距为5cm、电解质投加量为7g/L、粒子电极投加量为55g、反应120min后,所建立的三维电极体系对除草剂废水催化活性最高,化学需氧量(chemicaloxygendemand,COD)去除率达到68.0%,处理能耗为24.3(kW(h)/kg(COD),明显优于二维电极体系的。

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