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首页> 外文期刊>Journal of Materials Science >Prussian Blue electrodeposition within an oriented mesoporous silica film: preliminary observations
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Prussian Blue electrodeposition within an oriented mesoporous silica film: preliminary observations

机译:定向介孔二氧化硅膜中的普鲁士蓝电沉积:初步观察

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摘要

Prussian Blue (PB) has been electrochemically grown through thin mesoporous silica films of novel generation, exhibiting regular arrays of hexagonally packed mesopores channels (3 nm in diameter) oriented perpendicular to the underlying electrode surface. Due to confinement effects, special care has to be taken to ensure effective permeability of PB precursors through the hard silica template, which was best achieved by pulsed electrodeposition from a high ionic strength medium (2 M KCl). Energy dispersive X-ray spectroscopy associated to electron microscopy was used to evidence the presence of PB in the vertically-aligned mesopores, which was also assessed by their electrocatalytic behavior towards H2O2 reduction.
机译:普鲁士蓝(PB)已通过新一代的中孔二氧化硅薄膜电化学生长,显示出规则排列的垂直于下面电极表面定向排列的六方堆积中孔通道(直径3 nm)。由于限制作用,必须格外小心,以确保PB前体对硬质二氧化硅模板的有效渗透性,最好是通过从高离子强度介质(2 M KCl)中进行脉冲电沉积来实现。利用电子显微镜的能量色散X射线光谱技术来证明PB在垂直排列的中孔中的存在,并通过其对H 2 O 2 的电催化行为来评估子>减少。

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