| Ti/CeO_2-PTFE-PbO_2电极的制备及其电催化氧化性能 |
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| 引用本文： | 王勋华,周琦,张蓉,童少平,马淳安.Ti/CeO_2-PTFE-PbO_2电极的制备及其电催化氧化性能[J].化工学报,2010,61(5):1190-1195. |
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| 作者姓名： | 王勋华 周琦 张蓉 童少平 马淳安 |
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| 作者单位： | 浙江工业大学化学工程与材料学院，绿色化学合成技术国家重点实验室培育基地 |
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| 基金项目： | 国家自然科学基金，教育部高等学校博士学科点专项科研基金 |
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| 摘 要： | 采用热分解-电镀法制备了聚四氟乙烯(PTFE)掺杂PbO2电极(Ti/PTFE-PbO2)和PTFE、CeO2共掺杂PbO2电极(Ti/CeO2-PTFE-PbO2),考察了电流密度、温度、搅拌速率、CeO2浓度等工艺条件对电极寿命的影响。对Ti/CeO2-PTFE-PbO2的电催化氧化性能进行了初步研究。结果表明,在电流密度为30mA.cm-2、温度80℃、搅拌速率为1300r.min-1和CeO2为3g.L-1等较优条件下,Ti/CeO2-PTFE-PbO2电极在9mol.L-1H2SO4溶液中的强化电解寿命(1A.cm-2)达983h。SEM和EDX的分析结果表明,PTFE、CeO2共掺杂使得Ti/CeO2-PTFE-PbO2表面的晶粒排布更均匀致密,电解过程镀层的铅氧计量比也具有较高的稳定性。由于具有更高的析氧电位,与Ti/PTFE-PbO2电极相比,Ti/CeO2-PTFE-PbO2电极对对氯苯酚的降解显示了更好的电催化活性。
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| 关 键 词： | 复合电镀 PbO2 PTFE CeO2 对氯苯酚 |
| 收稿时间： | 2009-10-21 |
| 修稿时间： | 2009-12-28
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Preparation of Ti/CeO2-PTFE-PbO2 electrode and its electro-oxidation performance |
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| WANG Xunhua,ZHOU Qi,ZHANG Rong,TONG Shaoping,MA Chunan.Preparation of Ti/CeO2-PTFE-PbO2 electrode and its electro-oxidation performance[J].Journal of Chemical Industry and Engineering(China),2010,61(5):1190-1195. |
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| Authors: | WANG Xunhua ZHOU Qi ZHANG Rong TONG Shaoping MA Chunan |
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| Abstract: | Ti substrate polytetrafluoroethylene（PTFE）-doped PbO2（Ti/PTFE-PbO2）and PTFE，CeO2-codoped PbO2（Ti/CeO2-PTFE-PbO2）electrodes were prepared by a thermal decomposition-electrodeposition technique，and the factors affecting the electrode lifetime，like current density，temperature，stirring speed and CeO2 concentration were investigated as well.The electro-oxidative performance of Ti/CeO2-PTFE-PbO2 was investigated.The results showed that the prepared Ti/CeO2-PTFE-PbO2 electrode had a long accelerated electrolysis lifetime（about 983 h）under the optimum plating conditions，like current density 30 mA·cm-2，temperature 80℃，stirring speed 1300 r·min-1 and CeO2 concentration 3 g·L-1.The results of SEM and EDX analysis indicated that the Ti/CeO2-PTFE-PbO2 electrode had a denser structure and better stability of nonstoichiometry than common PbO2 electrode had during the accelerated electrolysis.Compared with Ti/PTFE-PbO2 anode，Ti/CeO2-PTFE-PbO2 anode had a higher electro-catalytic activity for the degradation of 4-CP because of its higher potential for oxygen evolution. |
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| Keywords: | composite plating PbO2 PTFE CeO2 4-chlorphenol |
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