Electrochemical Behavior of Ti-Based Nano-Electrode for Highly Efficient Denitrification in Synthetic Groundwater
Electrochemical Behavior of Ti-Based Nano-Electrode for Highly Efficient Denitrification in Synthetic Groundwater
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钛基纳米电极在合成地下水中高效反硝化的电化学行为
DOI：
10.1149/2.0821712jes
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发表时间：
2017
影响因子：
3.9
通讯作者：
Guoyu Ding
中科院分区：
文献类型：
--
作者：
Lele Wang;Miao Li;Xiang Liu;Chuanping Feng;Nan Chen;Xuejiao Ma;Guoyu Ding
采用阳极氧化法制备了钛基纳米电极。测试了钛基纳米电极在硝酸盐电化学还原中的电化学性能。扫描电子显微镜(SEM)和能谱分析(EDS)结果表明，钛基纳米电极表面覆盖有明显均匀的管状结构。循环伏安曲线表明，钛基纳米电极具有比钛电极更强的电极电化学活性；计时电流法增加了钛基纳米电极的粗糙度，实际表面积比钛电极大得多；另外，钛基纳米电极的Tafel斜率比钛电极的小。与钛电极相比，钛基纳米电极具有更高的还原效率和更低的能耗，具有更高的电化学活性，达到了清洁、安全去除硝酸盐的目的。
A Ti-based nano-electrode was successfully fabricated by anodization oxidization method. The electrochemical performances of Ti-based nano-electrode in the electrochemical reduction of nitrate have been measured. The results of scanning electron microscopy (SEM) and energy-dispersive spectroscopy (EDS) demonstrated that the surface of the Ti-based nano-electrode was covered with a clearly homogenous tubular structure. The cyclic voltammetric waves suggested that the Ti-based nano electrode has stronger electrode electrochemical activity than Ti electrode; chronoamperometries increased the roughness and the real surface area of Ti-based nano electrode was much larger than Ti electrode; additionally, the Tafel slope of the Ti-based nano-electrode is smaller than that of the Ti electrode. Compared with Ti electrode, Ti-based nano-electrode with enhanced electrochemical activity, has higher reduction efficiency and lower energy consumption, achieving the goal of clean, safe removal of nitrate.
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