Abstract Three-dimensional (3D), ordered nanoporous Cu2O and Cu inverse opal structures are attractive for various applications in photonics and catalysis. Here, we demonstrate an approach to fabricate 3D nanoporous inverse opals by electroplating through a uniform polystyrene (PS) opal template. The material composition of the inverse opals can be controlled to consist of pure Cu, Cu2O or Cu2O–Cu composites on Cu foils. Good agreement between experiment and simulation for reflectance spectra exhibits a low-angle-dependent photonic band for Cu2O inverse opals when compared with PS opals. Moreover, 3D nanoporous Cu2O with different layers obtain a large charge capacitance of up to 1.8 mF/cm2 (geometry), 25 times that of Cu foil. The hybrid Cu2O–Cu inverse opals exhibit higher separation efficiency of photogenerated carriers (optical properties) and double layer capacitance (electrochemical properties) than pure Cu or pure Cu2O inverse opals, which indicates a promising application in photoelectrochemistry.

中文翻译：

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通过电沉积调节 3D 纳米多孔 Cu2O-Cu 反蛋白石结构的光学和电化学性能

摘要 三维 (3D) 有序纳米多孔 Cu2O 和 Cu 反蛋白石结构在光子学和催化领域的各种应用中具有吸引力。在这里，我们展示了一种通过均匀聚苯乙烯 (PS) 蛋白石模板电镀来制造 3D 纳米多孔反蛋白石的方法。反蛋白石的材料成分可以控制为由铜箔上的纯铜、Cu2O 或 Cu2O-Cu 复合材料组成。与 PS 蛋白石相比，反射光谱的实验和模拟之间的良好一致性显示出 Cu2O 反蛋白石的低角度相关光子带。此外，具有不同层的 3D 纳米多孔 Cu2O 获得高达 1.8 mF/cm2（几何形状）的大电荷电容，是铜箔的 25 倍。