Abstract Iron oxide nanostructures have been studied extensively because of their excellent magnetic, optical, electrical, and catalytic properties. This work introduces a simple process to synthesize directly bi-phase α-/γ-Fe2O3 submicron flowers on a Fe foil in NH4OH. The flowers are assembled by using many nanoplates with an estimated thickness of 20–80 nm. The shapes and dimensions of the flowers can be controlled by the treatment time. The gas-sensing properties of the α-/γ-Fe2O3 submicron flowers are investigated at different gas concentrations (125–1500 ppm) and operating temperatures (200–360 °C). The sensing data indicate that the as-synthesized material exhibits excellent acetone-sensing characteristics and has the potential for practical applications.

中文翻译：

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使用铁板生长的双相 α-/γ-Fe2O3 亚微米花的高丙酮传感性能

摘要 氧化铁纳米结构因其优异的磁、光、电和催化性能而被广泛研究。这项工作介绍了一种简单的方法，可以在 NH4OH 中在 Fe 箔上直接合成双相 α-/γ-Fe2O3 亚微米花。这些花是通过使用许多估计厚度为 20-80 nm 的纳米板组装而成的。花的形状和尺寸可以通过处理时间来控制。在不同的气体浓度（125-1500 ppm）和工作温度（200-360°C）下研究了 α-/γ-Fe2O3 亚微米花的气敏特性。传感数据表明，所合成的材料表现出优异的丙酮传感特性，具有实际应用的潜力。