Nitrate ions as cathodic alkalization promoters for the electro-assisted deposition of sol–gel thin films
Nitrate ions as cathodic alkalization promoters for the electro-assisted deposition of sol–gel thin films
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DOI：
10.1016/j.scriptamat.2008.03.028
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发表时间：
2008-08
影响因子：
6
通讯作者：
S. Ding;Liang Liu;Ji-Ming Hu;Jian-qing Zhang;C. Cao
中科院分区：
文献类型：
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作者：
S. Ding;Liang Liu;Ji-Ming Hu;Jian-qing Zhang;C. Cao
以硝酸根为促进剂，在铝基上制备了十二烷基三甲氧基硅烷薄膜。通过电化学阻抗谱、扫描电镜和二次离子质谱分析表明，在硅烷溶胶-凝胶前驱体中加入硝酸盐，由于促进了阴极碱化，促进了硅烷膜的电辅助形成。然而，由于前驱体的盐析作用和硅烷薄膜中可溶的硝酸盐残留，过高的硝酸盐浓度是有害的。
Nitrate was used as a promoter to prepare dodecyltrimethoxysilane thin films on aluminum substrates. With the addition of nitrate into silane sol–gel precursors, the electro-assisted formation of silane films was facilitated, as indicated by electrochemical impedance spectroscopy, scanning electron microscopy and secondary-ion mass spectroscopy, due to the promotion in cathodic alkalization. However, an extra-high concentration of nitrate would be harmful because of the salting-out effect in precursors and the soluble nitrate remaining in silane films.