Au–Cu bimetallic nanomaterials have attracted tremendous attention in the field of catalysis, water splitting, biosensor and biotherapy. Au3Cu nanocrystals with a definite stoichiometric ratio and ordered arrangement of atoms have shown great potential for efficient catalyts. Herein, we reported a new method for fabrication of Au3Cu nanocrystals. Their morphologies can be tuned by the amount of hydrochloric aqueous solution, including nanosquare and frame were achieved, respectively. The as-synthesized Au3Cu nanosquares not only demonstrated a comparatively high sensitivity of 324.8 μA mM−1 cm−2 as a non-enzymatic glucose sensor but also performed well in CO catalytic oxidation even at 50 °C with a conversion efficiency of 30 mmol g−1 h−1.

中文翻译：

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用于葡萄糖传感器和 CO 氧化催化剂的 Au3Cu 纳米方块和框架

Au-Cu双金属纳米材料在催化、水分解、生物传感器和生物治疗领域引起了极大的关注。具有明确化学计量比和原子有序排列的 Au3Cu 纳米晶体显示出作为高效催化剂的巨大潜力。在此，我们报道了一种制备 Au3Cu 纳米晶体的新方法。它们的形态可以通过盐酸水溶液的量进行调整，分别实现了纳米方形和框架。合成的 Au3Cu 纳米方块不仅表现出 324.8 μA mM−1 cm−2 作为非酶葡萄糖传感器的相对较高的灵敏度，而且即使在 50 °C 下也表现出良好的 CO 催化氧化，转化效率为 30 mmol g −1 h−1。