A detailed comparative study on the synthesis process of coral-like CuO/Cu₂O nanorods (NRs) and nanopolycrystals (NPCs) fabricated on Cu foil employing aqueous electrolyte via potentiostatic (POT) and galvanostatic (GAL) modes is discussed. The structural, morphological, thermal, compositional, and molecular vibration of the prepared CuO/Cu₂O nanostructures was characterized by XRD, HRSEM, TG/DTA, FTIR, and EDX techniques. XRD analysis confirmed the crystalline phase of the formation of monoclinic CuO and cubic Cu₂O nanostructures with well-defined morphology. The average particle size was found to be 21.52 nm and 26.59 nm for NRs (POT) and NPCs (GAL), respectively, and this result is corroborated from the HRSEM analysis. POT synthesized nanoparticle depicted a higher thermal stability up to 600°C implying that the potentiostatically grown coral-like NRs exhibit a good crystallinity and well-ordered morphology.

中文翻译：

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恒电位和恒电流阳极氧化制备的 CuO/Cu2O 纳米结构的比较研究

讨论了对使用水性电解质通过恒电位 (POT) 和恒电流 (GAL) 模式在铜箔上制造的珊瑚状 CuO/Cu ₂ O 纳米棒 (NRs) 和纳米多晶(NPC)的合成过程的详细比较研究。通过 XRD、HRSEM、TG/DTA、FTIR 和 EDX 技术对制备的 CuO/Cu ₂ O 纳米结构的结构、形态、热、组成和分子振动进行了表征。XRD分析证实形成单斜CuO和立方Cu ₂的晶相具有明确形态的 O 纳米结构。NRs (POT) 和 NPCs (GAL) 的平均粒径分别为 21.52 nm 和 26.59 nm，HRSEM 分析证实了这一结果。POT 合成的纳米颗粒在高达 600°C 时具有更高的热稳定性，这意味着恒电位生长的珊瑚状 NRs 表现出良好的结晶度和有序的形态。