新型Bi_2O_3/石英柱粒子电极对甲基橙的降解研究  

A NOVEL Bi_2O_3/QUARTZ COLUMN PARTICLE ELECTRODE FOR DEGRADATION OF METHYL ORANGE

作　　者：刘刚[1] 陈海涛[1] 郭雪婷[1] 黄继国[1] 杨帅[1] 刘星娟[1] 

机构地区：[1]吉林大学环境与资源学院,吉林长春130000

出　　处：《水处理技术》2015年第2期89-92,共4页Technology of Water Treatment

摘　　要：通过浸渍焙烧法制备了Bi2O3/石英柱粒子电极,分别采用了扫描电子显微镜、能量色散X射线能谱和X射线衍射等表征手段对粒子电极的形貌、晶相和组成进行了表征。通过对甲基橙的降解,证明了粒子电极的电催化活性并优化了粒子电极反应参数。结果表明,氧化铋成功地负载在石英柱表面,且表明了三斜相的氧化铋具有良好的电催化性能;在电解电压为9V,粒子投加量为15g,初始质量浓度为200mg/L,电解质浓度为1g/L,曝气量为8L/min,处理120min后,对甲基橙的去除率可以达到95%,能耗为7.8kWh/kg(以COD计),明显优于二维电极体系,且经过5次重复使用后,粒子电极依然具有良好的电催化性能。A novel Bi2O3/quartz column particle electrode was prepared by the dipping-calcinations method. The morphology, crystal phase and composition of the particle electrodes were characterized by X-ray diffractometer （XRD）, energy dispersive X-ray spectroscopy （EDS） and scanning electron microscope （SEM）. Electro-catalytic activity of this material was evaluated by degrading methyl orange, and the electro-catalytic response parameters of particle electrodes were optimized. The results indicated that bismuth oxide was successfully loaded on quartz column, and the triclinic phase of Bi2O3 was advantageous to the electro-catalytic properties of the material. When the cell voltage was 9 V, the dosage of particle electrodes was 15 g, the amount of electrolyte was 1 g/L and airflow was 8 L/min, the optimum degradation efficiency of methyl orange reached 95% and energy consumptionofthree-dimensional （3D） electrode reactor was only 7.8 kWh/kg （COD）, indicating a much higher performance ofthe electro-eatalytic from 3D electrode reactor than that of two-dimensional electrode reactor. Meanwhile, the electro-catalytic performance of particle electrodes still showed the high efficiency after 5 times reusing.

关 键 词：Bi2O3石英柱 电催化氧化 甲基橙 

分 类 号：X703[环境科学与工程—环境工程]