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Preparation and Characterization of Titanium Based PbO2 Electrodes Doped with Some Common Elements
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Preparation and Characterization of Titanium Based PbO2 Electrodes Doped with Some Common Elements
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Ph. D. Programs Foundation of Ministry of Education of China (20090201110005); Natural Science Foundation of Jiangsu Province; (SBK201022919) and the Joint supervision scheme of Hong Kong Polytechnic University (GU-784)

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    摘要:

    采用電沉積法制備了4種鈦基體PbO2電極，其中3種分別采用Fe、Ni和Ag進行摻雜。利用SEM、XRD、強化壽命測試及線性伏安掃描對所制備4種電極性質(zhì)進行表征，結(jié)果表明：4種電極表面均為四方體形PbO2顆粒；非摻雜電極及Ni摻雜電極的平均顆粒直徑非常接近，且要小于Fe摻雜及Ag摻雜電極；Fe摻雜電極的強化測試壽命最長（116 h），這可能是由其致密的表面所導(dǎo)致；Ni摻雜電極的析氧電位為4種電極中最高，并在苯酚降解實驗中擁有最高的COD去除效率及平均電流效率，以及最低的能耗值

    Abstract:

    Four kinds of PbO2 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-PbO2 crystals. The average grain sizes of the undoped PbO2 electrode and Ni-doped PbO2 electrode are similar and smaller than that of the Fe-doped PbO2 and Ag-doped PbO2 electrodes. The Fe-doped PbO2 electrode has the longest accelerated test life due to its dense surface. The LSV tests show that the Ni-doped PbO2 electrode possesses the highest oxygen evolution potential. From the phenol electrolysis, the Ni-doped PbO2 electrode demonstrated the best performance in COD removal efficiency, average current efficiency, and energy consumption

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徐 浩,李晶晶,延 衛(wèi),朱 威. Preparation and Characterization of Titanium Based PbO2 Electrodes Doped with Some Common Elements[J].稀有金屬材料與工程,2013,42(5):885~890.[Xu Hao, Li Jingjing, Yan Wei, Chu W. Preparation and Characterization of Titanium Based PbO2 Electrodes Doped with Some Common Elements[J]. Rare Metal Materials and Engineering,2013,42(5):885~890.]
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  • 收稿日期:2012-05-25
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