手机知网 App
24小时专家级知识服务
打 开
化学
Comparative study of oxidation ability between boron-doped diamond (BDD) and lead oxide (PbO_2) electrodes
 
The electrochemical oxidation capabilities of two high-performance electrodes,the boron-doped diamond film on Ti (Ti/BDD) and the lead oxide film on Ti (Ti/PbO2),were discussed.Hydroxyl radicals (·HO) generated on the electrode surface were detected by using p-nitrosodimethylaniline (RNO) as the trapping reagent.Electrochemical oxidation measurements,including the chemical oxygen demand (COD) removal and the current efficiency (CE),were carried out via the degradation of p-nitrophenol (PNP) under the galvanostatic condition.The results indicate that an indirect reaction,which is attributed to free hydroxyl radicals with high activation,conducts on the Ti/BDD electrode,while the absorbed hydroxyl radicals generated at the Ti/PbO2 surface results in low degradation efficiency.Due to quick mineralization which combusts PNP to CO2 and H2O absolutely by the active hydroxyl radical directly,the CE obtained on the Ti/BDD electrode is much higher than that on the Ti/PbO2 electrode,notwithstanding the number of hydroxyl radicals produced on PbO2 is higher than that on the BDD surface.
领 域:
化学
格 式:
PDF原版;EPUB自适应版(需下载客户端)
2 65
手机阅读本文
下载APP 手机查看本文
International Journal of Minerals Metallurgy and Materials
2011年05期
相似文献
图书推荐
相关工具书

搜 索