常见元素掺杂的钛基体PbO2电极制备与表征.pdfVIP

Rare Metal Materials and Engineering Available online at www.sciencedirect. com Volume 42 , Issue 5, May 2013 Online English edition of the Chinese language journal ScienceDirect Clte this article as: Rare Metal Materials and Engineering , 2013 , 42(5): 0885-0890. Preparation and Characterization of Titanium Based Pb02 Electrodes Doped with Some Common Ele- ments Xu Ha。12， Li Jingjing飞 Yan Wei 1, 3 , ChuW2 IX ian Jiaotong University, X ian 710049, China; 2 The Hong Kong POlytechnic University, Hong Kong, Ch的a; 3Suzhou Academy 0Xian Jiaotong Universit.μ Suzhou 215012, China Abstract: Four kinds of Pb02 electrodes were prepared by electrochemical deposition and three of them were doped by Fe , Ni and Ag , respectively. The characters of the electrodes were analyzed by SEM, XRD , accelerated life tests , and linear scanning voltammetry. The results show that the electrode surfaces are covered by quadrangular β-Pb0 crystals. The average grain 2 sizes of the undoped Pb02 electrode and Ni-doped Pb02 electrode are similar and smaller than that of the Fe-doped Pb02 and Ag-doped Pb02 electrodes. The Fe-doped Pb02 electrode has the longest accelerated test life due to its dense surface. The LSV tests show that the Ni-doped Pb02 electrode possesses the highest oxygen evolution potentia l. From the phenol electrolysis , the Ni-doped Pb02 electrode demonstrated the best perfo口nance in COD removal efficiency, average current efficiency, and energy consumptlOn. Key words: Pb0