俞益航,王新令,励蓉,曹华珍.基于TNTs中间层的钌铱钽氧化物阳极制备及强化寿命研究[J].表面技术,2022,51(2):384-391.
YU Yi-hang,WANG Xin-ling,LI Rong,CAO Hua-zhen.Preparation and Accelerating Life Testing of RuIrTa Oxide Anode with TNTs Interlayer[J].Surface Technology,2022,51(2):384-391 |
| 基于TNTs中间层的钌铱钽氧化物阳极制备及强化寿命研究 |
| Preparation and Accelerating Life Testing of RuIrTa Oxide Anode with TNTs Interlayer |
| 投稿时间：2021-04-16 修订日期：2021-07-04 |
| DOI：10.16490/j.cnki.issn.1001-3660.2022.02.039 |
| 中文关键词: 金属氧化物电极 TNTs中间层 钽 析氯 强化寿命 |
| 英文关键词:metal oxide electrode TNTs interlayer tantalum chlorine evolution accelerating life |
| 基金项目:国家自然科学基金(21103150);新苗人才计划项目(2041125069901T) |
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| Author | Institution |
| YU Yi-hang | College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China |
| WANG Xin-ling | College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China |
| LI Rong | College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China |
| CAO Hua-zhen | College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China |
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| 中文摘要: |
| 目的 通过TNTs(TiO2纳米管阵列)中间层的引入以及涂层成分调控，制备具有优异析氯性能的长寿命金属氧化物阳极。方法 采用阳极氧化法及热处理工艺，在钛基体上原位生长导电性良好、化学性质稳定的TiO2纳米管阵列，进而通过涂覆、热分解法制备不同组成的RuIrTa氧化物复合电极。利用场发射扫描电镜(FESEM)、 X 射线衍射仪(XRD)等仪器，对电极的微观形貌、成分及晶体结构进行表征。借助循环伏安曲线、加速腐蚀试验研究电极的析氯活性及强化寿命，重点考察了涂覆液配比以及涂覆量等对电极性能的影响，并通过析氯实验研究了所制备的氧化物阳极对水体中氯离子的降解效率。结果 TNTs中间层可以有效减小电极表面涂层的裂纹数量及裂缝间隙，所制备的含TNTs中间层的RuIrTa氧化物电极强化寿命优于无中间层氧化物电极。涂层中Ta的引入可进一步提高电极的强化寿命，但会导致电极的电化学活性降低。此外，适宜的涂覆量是制备均匀涂层的关键，涂覆量过多将导致活性成分利用低、涂层龟裂。综合考虑，涂覆量为4.5 g/m2、Ru∶Ir∶Ta(物质的量比)=3∶7∶1的复合电极的综合性能较佳，不仅析氯活性高，且强化寿命长，可用于水体中微量氯的电解。结论 基于TNTs中间层的钌铱钽氧化物阳极具有优异的稳定性和电化学活性。 |
| 英文摘要: |
| Long-life metal oxide anodes with excellent chlorine evolution performance were investigated by the introduction of TNTs (TiO2 nanotube array) interlayer and the composition adjustment. TiO2 nanotube arrays with good conductivity and chemical stability were fabricated by in-situ growth on titanium matrix via anodic oxidation and heat treatment, and then RuIrTa oxide were loaded on the TNTs by coating and thermal decomposition process. The microstructure, composition and crystal structure of the electrodes were characterized by field emission scanning electron microscopy (FESEM) and X-ray diffractometry (XRD). The chlorine evolution activity and stability of electrodes were studied by cyclic voltammetry curve and accelerated corrosion test. The influence of composition and coating amount on the electrode performance were emphatic investigated. The degradation efficiency of chloride ions in water by the prepared anode was also studied. The results show that the TNTs interlayer can effectively reduce the number of cracks and the crack gap of coatings. The accelerating life time of RuIrTa electrodes with TNTs interlayer is much longer than that of the electrode without interlayer. The introduction of tantalum into the coating can further improve the electrode stability, but reduce its electrochemical activity. In addition, the coating amount is a key factor influencing the uniformity of coatings. Excess amount of coating will lead to low utilization of active ingredients and coating cracking. The composite electrode with coating amount of 4.5 g/m2 and Ru∶Ir∶Ta=3∶7∶1 has better comprehensive performance. It not only has high chlorine evolution activity, but also has better stability, which can be used for the electrolysis of chlorine ions with low content in water. Therefore, we can conclude that the RuIrTa oxide anode with the TNTs intermediate layer has excellent stability and electrochemical activity. |
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