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材料研究学报  2005, Vol. 19 Issue (1): 47-53    
  论文 本期目录 | 过刊浏览 |
Ti/Mn/SnO2电催化电极的制备及性能研究
崔玉虹;冯玉杰;刘峻峰;邓斐今
哈尔滨工业大学环境科学与工程系
Performance of Ti--base SnO$_{2}$ electrode with an inter layer containing Mn element
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哈尔滨工业大学环境科学与工程系
引用本文:

崔玉虹; 冯玉杰; 刘峻峰; 邓斐今 . Ti/Mn/SnO2电催化电极的制备及性能研究[J]. 材料研究学报, 2005, 19(1): 47-53.
, , , . Performance of Ti--base SnO$_{2}$ electrode with an inter layer containing Mn element[J]. Chin J Mater Res, 2005, 19(1): 47-53.

全文: PDF(1019 KB)  
摘要: 采用高温热氧化方法制备了含Mn中间层的钛基二氧化锡电催化电极Ti/Mn/SnO$_{2}$. 采用SEM、EDX以及XPS等检测方法对电极表面涂层的形貌、元素组成及元素化学态进行了分析, 研究了所制备Ti/Mn/SnO$_{2}$电极电催化氧化降解苯酚的性能. 结果表明, Mn中间层的引入降低了电极对苯酚的电催化降解活性, 使电极的使用稳定性大为提高. 含Mn中间层的存在, 可防止电化学反应过程中析出的氧向基体的扩散, 离子对Mn$^{2+}$/Mn$^{4+}$与Sn$^{2+}$/Sn$^{4+}$的存在改变了 SnO$_{2}$电极表面催化剂的组成和结构, 导致电极性能变化.
关键词 无机非金属材料SnO2电极中间层苯酚    
Abstract:Taking titanium as the base metal, a kind of tin dioxide catalytic electrode with an inter--layer containing Mn(Ti/Mn/SnO$_{2}$) was prepared by pyrolysis. The electro--catalytic oxidation characteristics of prepared electrode were investigated by selecting phenol as model substrate. The micrographs, the element composition of different layers, and the chemical environment of elements on the electrode surface were analyzed by SEM, EDX and XPS. Although the electro--catalytic activity of the electrode was decreased, the working voltages of Ti/Mn/SnO$_{2}$ electrode were highly stabilized compared with that of Ti/SnO$_{2}$ electrode without Mn inter--layer. It implies that the inter--layer might hold up the oxygen atom transfer process from electrode surface to Ti base metal, and this could then extend service life of the electrode. The redox couples of Mn$^{2+}$/Mn$^{4+}$ and Sn$^{2+}$/Sn$^{4+}$ influence the composition and the crystal structure on SnO$_{2}$ electrode surface, and hence change the electrode performance.
Key wordsinorganic nonmetallic material    tin dioxide electrode    inter-layer    phenol
收稿日期: 2004-04-29     
ZTFLH:  TB321  
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