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โœฆ   LIBER   โœฆ

Study on Lead Dioxide Modified Electrode and Its Application in Detection of Phenols

โœ Scribed by Ai Shi-Yun; Gao Meng-Nan; Cai Qi; Sun Zheng-Dong; Jem Li-Tong

Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
399 KB
Volume
21
Category
Article
ISSN
0256-7660

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โœฆ Synopsis

Abstract

The conditions for the preparation of PbO~2~ modified Pt rotation disc electrode in solutions containing HC10~4~ and Pb(II) were studied, and the morphology and composition of the obtained PbO~2~ film were characterized by SEM and XRD techniques, respectively. The results show that the modification process of PbO is dependent on the rotation velocity of the electrode and the concentrations of HCIO4 and Pb(II). And it was observed that the obtained PbO~2~ film was rutile ฮฒโ€PDO~2~ structure. At a certain positive potential, HOยท and HO~2~ยท radicals can be generated on the surface of the modified PbO~2~/Pt electrode and then oxidize phenols. According to the change of the responding anodic current, the determination of phenols was realizable and good results were obtained.

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