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首页> 外文期刊>RSC Advances >A polystyrene/WO3 opal composite monolayer film as a building block for the fabrication of 3D WO3 inverse opal films
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A polystyrene/WO3 opal composite monolayer film as a building block for the fabrication of 3D WO3 inverse opal films

机译：聚苯乙烯/ WO 3 蛋白石复合单层膜作为构建3D WO 3 反蛋白石膜的基础

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摘要

Large area polystyrene (PS)/WO3 opal composite monolayers were successfully fabricated via a modified “dynamic-hard-template” infiltration strategy. These composite monolayers were then used as building blocks for the synthesis of three-dimensional (3D) WO3 inverse opal (IO) films in a bottom-up approach. To achieve this, a PS/WO3 opal composite monolayer serves as a support upon which another PS/WO3 opal composite monolayer is added, and so on, one over the other, rendering possible, after removal of the PS spheres template, the fabrication of large area 3D WO3 IO films. Similarly, bilayer, and trilayer WO3 IOs with large area, having the same pore sizes from layer to layer, can be obtained by repeatedly applying this strategy. This approach also allows control over hierarchical porosity and film thickness by simply changing the diameter of the sacrificial colloidal template and/or the inorganic precursor used in each layer. 3D WO3 IO films fabricated with this technique exhibit good electrochemical reversibility, cycling stability, and increased coloration efficiency (CE) as the number of WO3 IO layers is increased.
机译：通过改进的“动态-硬模板”渗透策略成功制备了大面积聚苯乙烯（PS）/ WO 3 蛋白石复合单层。然后，将这些复合单层用作构建模块，以自下而上的方式合​​成三维（3D）WO 3 反蛋白石（IO）薄膜。为此，PS / WO 3 蛋白石复合单层充当支撑物，另一个PS / WO 3 添加蛋白石复合单层，依此类推，一层一层地叠加，使得在移除PS球体模板之后，可以制造大面积3D WO 3 IO电影。同样，可以通过重复应用此策略来获得双层和三层大面积WO 3 IO，各层之间的孔径相同。该方法还允许通过简单地改变每层中使用的牺牲胶体模板和/或无机前体的直径来控制分级孔隙率和膜厚度。随着WO 3数量的增加，用这种技术制备的3D WO 3 IO膜表现出良好的电化学可逆性，循环稳定性和提高的着色效率（CE） IO层增加了。

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