Chemical composition and barrier properties of Ag nanoparticle-containing sol-gel films in oxidizing and reducing low-temperature plasmas
Chemical composition and barrier properties of Ag nanoparticle-containing sol-gel films in oxidizing and reducing low-temperature plasmas
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含银纳米颗粒溶胶凝胶薄膜的化学组成及氧化还原低温等离子体阻隔性能
DOI：
10.1016/j.surfcoat.2007.03.023
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发表时间：
2007
影响因子：
5.4
通讯作者：
G. Grundmeier
中科院分区：
文献类型：
--
作者：
P. Ebbinghaus;Patrick Keil;K. Kontturi;G. Grundmeier
以正硅酸乙酯（TEOS）、硝酸和硝酸银（AgNO3）为主要前驱体，3-（2-氨乙基氨基）丙基三甲氧基硅烷（DIAMO）为稳定剂，制备了含银纳米粒子的SiO2溶胶-凝胶涂层。采用紫外/维斯光谱、红外反射吸收光谱（IRRAS）、椭圆偏振光谱和电化学阻抗谱（EIS）研究了涂层的稳定性和阻隔性能。涂层的长期稳定性和阻隔性能可以通过低温O2和H2等离子体处理来定制。氧化等离子体处理使基质从有机-无机到二氧化硅样的变化，并且还原处理导致在基质内的Ag纳米颗粒上形成的钝化膜减少。因此，基于溶胶-凝胶化学与随后的等离子体处理的组合，可以实现新的薄膜功能。
Silver nanoparticle-containing silica sol–gel coatings were synthesised using tetraethylorthosilicate (TEOS), HNO3and AgNO3as the main precursors and 3-(2-aminoethylamino)propyl trimethoxysilane (DIAMO) as a stabiliser. The stability and the barrier properties of the coatings were studied by means of UV/Vis spectroscopy, FTIR reflection absorption spectroscopy (IRRAS), spectroscopic Ellipsometry and electrochemical impedance spectroscopy (EIS). Both the long-term stability and barrier properties of the coatings could be tailored by low-temperature O2and H2-plasma treatments. The oxidative plasma treatment enabled the change of the matrix from organic–inorganic to silica-like and the reductive treatment led to a reduction of the formed passive film on the Ag nanoparticles within the matrix. Thereby, based on the combination of sol–gel chemistry with subsequent plasma treatment new thin film functionalities can be achieved.