| 混合La-Zn氧化物膜在阴极表面电化学共沉积机理研究 |
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| 引用本文： | 王艳坤,吴崇珍.混合La-Zn氧化物膜在阴极表面电化学共沉积机理研究[J].河南师范大学学报(自然科学版),2013,41(2):94-97. |
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| 作者姓名： | 王艳坤 吴崇珍 |
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| 作者单位： | 河南教育学院化学系,郑州,450046 |
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| 基金项目： | 河南省科技攻关重点项目，河南省教育厅自然科学基础研究项目 |
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| 摘 要： | 采用三电极体系通过恒电位沉积法使La从Zn(OH)2和La(NO3)3水溶液中掺杂在锌氧化物薄膜中.系统研究了沉积电势和溶液浓度对混合氧化物膜组成的影响,两种金属离子及其氢氧化物的物质分布系数随pH函数的变化通过热力学常数计算和作图标出,并用于解释混合La-Zn氢氧化物在阴极表面的电化学沉积机理和预测混合La-Zn氧化物膜的组成.
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| 关 键 词： | La-Zn氧化物膜 电沉积 机理研究 |
Mechanistic Study on Electrochemicl Codeposition of Mixed Zinc-Lanthanum Oxide Films on the Cathodic Surface |
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| WANG Yankun
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WU Chongzhen.Mechanistic Study on Electrochemicl Codeposition of Mixed Zinc-Lanthanum Oxide Films on the Cathodic Surface[J].Journal of Henan Normal University(Natural Science),2013,41(2):94-97. |
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| Authors: | WANG Yankun WU Chongzhen |
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| Institution: | (Department of Chemistry,Henan Institute of Education,Zhengzhou 450046,China) |
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| Abstract: | La-doped ZnO thin films were successfully synthesized from aqueous solutions containing Zn(NO3)2 and La(NO3)3 by the potentiostatic electrodeposition method using a three-electrode system.The effects of deposited voltage and solution concentration on the composition of mixed oxides films were systematically studied.The speciation distributions of the two metal ions and their hydroxides as a function of pH values,which were calculated and plotted according to the thermodynamic constants for these species,were used to explain the reaction mechanism for electrocodeposition of mixed lanthanum-zinc hydroxides on cathodic surfaces and predict the composition for the mixed lanthanum-zinc oxide films. |
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| Keywords: | lanthanum-zinc oxide films electrodeposition mechanistic study |
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