稀土改性Ti/Sb-SnO_2/β-PbO_2电极的制备与性能  

Preparation and Performance of Ti/Sb-SnO_2/β-PbO_2 Electrode Modified with Rare Earth

作　　者：杨卫华[1] 王鸿辉[1] 付芳[1] 

机构地区：[1]华侨大学,福建泉州362021

出　　处：《稀有金属材料与工程》2010年第7期1215-1218,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金项目(20575023)

摘　　要：用电沉积法制备钛基二氧化铅电极,以Nd(NO3)3、Ce(NO3)3、Gd2O3和Sm2O3分别对电极进行改性研究。采用XRD、SEM、EDS等方法考察稀土改性对PbO2电极物相结构、表面形貌、元素组成的影响规律。XRD分析表明,改性电极的表面晶型没有改变,并且PbO2表层的结晶纯度提高;SEM结果显示,改性电极的表面形貌有不同程度的改变;EDS结果表明,添加的稀土可能进入了PbO2表层内部。苯酚降解试验和强化寿命测试说明改性PbO2电极具有更好的电催化活性和稳定性。The modified PbO2 electrodes doped with rare earth compounds,i.e. Nd（NO3）3,Ce（NO3）3,Gd2O3 and Sm2O3,were prepared by electrodeposition method and the influences of rare earth modification on the performances of PbO2 electrodes were investigated. XRD,SEM and EDS were employed to research the crystal phase structure,surface morphology and element composition of the modified electrodes respectively. XRD analysis reveals that the crystal form of PbO2 electrodes is not changed and the crystal purity of β-PbO2 is improved. SEM results indicate that the morphology of the electrode surface have changed at different degrees. EDS results suggest that the added rare-earth may enter PbO2 surface layer. The phenol degradation experiments and strengthened lifetime tests show that the electrocatalytic activity and stability of the modified electrodes are better.

关 键 词：二氧化铅 稀土 改性电极 

分 类 号：TG146.23[一般工业技术—材料科学与工程]