Preparation and properties of PbO2-ZrO2 nanocomposite electrodes by pulse electrodeposition
Preparation and properties of PbO2-ZrO2 nanocomposite electrodes by pulse electrodeposition
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DOI：
10.1016/j.electacta.2013.11.150
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发表时间：
2014-01
影响因子：
6.6
通讯作者：
Yingwu Yao;Manman Zhao;Chunmei Zhao;Haijun Zhang
中科院分区：
文献类型：
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作者：
Yingwu Yao;Manman Zhao;Chunmei Zhao;Haijun Zhang
在含有ZrO 2纳米粒子的硝酸铅镀液中，采用脉冲电沉积法制备了PbO 2-ZrO 2纳米复合电极。研究了脉冲电沉积参数（脉冲频率、平均电流密度和占空比）对PbO 2-ZrO 2纳米复合电极中ZrO 2质量分数的影响。SEM和XRD测试表明，PbO 2-ZrO 2纳米复合电极具有比PbO 2电极更细的晶粒尺寸。PbO 2-ZrO 2纳米复合电极的使用寿命达到298 h，是PbO 2电极的4倍。电化学测试表明，PbO 2-ZrO 2纳米复合电极具有比PbO 2电极更高的析氧过电位和更大的活性表面积。研究了PbO 2-ZrO 2纳米复合电极对罗丹明B（RhB）的电催化氧化性能，发现该反应符合准一级反应动力学方程。电解实验表明，PbO 2-ZrO 2纳米复合电极对RhB和COD的去除率均高于PbO 2电极。
PbO2-ZrO2nanocomposite electrodes were prepared by pulse electrodeposition in the lead nitrate plating bath containing ZrO2nanoparticles. The effect of pulse electrodeposition parameters, such as pulse frequency, average current density and duty cycle, on the ZrO2weight percentage in the PbO2-ZrO2nanocomposite electrodes was investigated. The SEM and XRD tests show that PbO2-ZrO2nanocomposite electrodes possess finer grain size than PbO2electrodes. The service life of PbO2-ZrO2nanocomposite electrodes reaches 298 h which is 4 times longer than that of PbO2electrodes. The electrochemical measurements show that PbO2-ZrO2nanocomposite electrodes possess higher oxygen evolution overpotential and larger active surface area than PbO2electrodes. The electrocatalytic property of PbO2-ZrO2nanocomposite electrodes was also examined for the electrochemical oxidation of rhodamine B (RhB) and good fitting was found using the relation for the pseudo-first order reaction. The bulk electrolysis shows that the PbO2-ZrO2nanocomposite electrodes exhibit the higher RhB and COD removal efficiency than PbO2electrodes.