表面活性剂协助的邻苯二甲酸自组装结构上锡的电化学沉积

发布时间：2018-05-05 11:59

本文选题：镀锡 + 邻苯二甲酸　；参考：《长春工业大学》2015年硕士论文

【摘要】：本文对邻苯二甲酸(PA)与表面活性剂分子间相互作用对锡电沉积的影响进行了研究。我们的思路是通过分子间的相互作用在电极表面构建一层致密且规则的添加剂分子网络,通过这层分子网络能够阻挡金属离子向阴极接近,抑制其在电极表面还原,从而实现对电沉积过程的调控。我们选择芳香羧酸作为分子结构单元,试图通过分子之间构筑的分子网络对添加剂分子夹杂和电还原反应的抑制作用实现调控。芳香羧酸由于相邻分子之间可以通过氢键、π-π堆积和范德华力等相互作用,在电极-电解液界面形成自组装的分子网络,因而引起了人们的关注。CV曲线表明,本文采用的PA与Triton x100的组合体系对锡电沉积产生了较强的抑制作用。SEM表明,PA与Triton x100组合作为添加剂得到的镀层光洁、均匀、致密。碳含量的测试表明,PA与Triton x100组合的到的镀层具有相对较低的碳含量。这表明,采用PA与Triton x100的组合实现了对添加剂夹杂的控制。其原因可能是在电极表面形成了分子聚集(分子网络),由于PA与Triton x100各分子之间的相互作用,产生了互相连接、互相牵制作用。
[Abstract]:In this paper, the effect of the interaction between phthalic acid (PAA) and surfactant on the electrodeposition of tin was studied. Our idea is to construct a dense and regular molecular network of additives on the electrode surface through intermolecular interactions, which can block metal ions from approaching the cathode and inhibit their reduction on the electrode surface. Thus, the regulation of electrodeposition process is realized. We choose aromatic carboxylic acids as molecular structural units to regulate the inhibition of additive molecular inclusion and electroreduction by molecular networks. Aromatic carboxylic acids form self-assembled molecular networks at the electrode electrolyte interface through the interaction of hydrogen bonds, 蟺-蟺 stacking and van der Waals force between adjacent molecules. In this paper, the combination system of PA and Triton x100 has a strong inhibitory effect on the electrodeposition of tin. SEM shows that the coating obtained by the combination of PA and Triton x100 as additives is smooth, uniform and dense. The measurement of carbon content shows that the coating with the combination of PA and Triton x100 has relatively low carbon content. This shows that the combination of PA and Triton x 100 is used to control the additive inclusion. This may be due to the formation of molecular aggregation (molecular network) on the electrode surface, which is caused by the interaction between PA and Triton x100 molecules.
【学位授予单位】：长春工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ153.13;O647.2

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