| Dy改性SnO2 / Sb电催化电极的制备及表征 |
| Preparation and Characterization of Dy doped Ti-base SnO2 / Sb Electro-catalytic Electrodes |
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| 摘要: 为改进钛基SnO2 / Sb电极的电催化性能，采用高温热氧化法制备了稀土Dy改性钛基SnO2 / Sb电极。以苯酚为目标有机物，考察了所制备电极的电催化活性，并采用SEM、EDS、XRD等分析方法表征了电极的形貌、组成及结构。对制备温度和Dy添加量进行了详细的实验研究，确定了适宜的制备条件为热处理温度650 ℃、Dy添加量1%左右。研究表明，结晶良好的掺杂SnO2晶粒有助于苯酚的快速彻底分解。Dy掺杂后，半径较大的Dy3+ |
| 关键词: 二氧化锡 Dy 电催化 苯酚 |
| 基金项目: |
| Abstract: Dysprosium was selected as a promoter for Ti-base SnO2 / Sb electrode to improve the electro-catalytic ability in wastewater treatment. Dy doped SnO2 / Sb electrodes with different compositions were prepared by pyrolysis and were characterized by SEM, EDS and XRD. The degradation ability of prepared electrodes was also investigated using phenol as a model pollutant. The preparation parameters, including temperature and Dy doping content, were studied in detail. The optimal pyrolysis temperature, Dy doping content were 650 ℃, about 1%, respectively. Doped SnO2 material with well crystallinity favors completely decomposition of phenol. Compared with SnO2 / Sb electrode, the unit cell of SnO2 expands slightly due to the possible replacement of larger Dy3+ for Sn4+ at these sites. The average size of SnO2 nano-grains on electrode surface was smaller for Dy doped SnO2 / Sb electrode, which implies a potential improvement in catalytic performance. Dy and Sb atoms were found to be enriched on the electrode surface layer when Dy was introduced and high content of Dy was not in favor of electrode performance. |
| Keywords: SnO2 Dysprosium electro-catalysis phenol |
| 投稿时间：2004-11-15 修订日期：2005-01-25 |
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| 冯玉杰,崔玉虹,王建军.Dy改性SnO2 / Sb电催化电极的制备及表征[J].无机化学学报,2005,21(6):836-841. |
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