The unique α-Fe₂O₃ hexagonal nanosheets have been successfully prepared through a facile solvothermal method with subsequent calcining process. The as-synthesized α-Fe₂O₃ sample exhibits p-type conductive performance. The gas sensitivities of the as-fabricated Fe₂O₃ nanosheets-based sensor are comprehensively studied and show good gas-sensing performance toward aniline. Furthermore, the aniline-sensing mechanism is investigated and the origin of the p-type conductivities is also discussed.

中文翻译：

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P型α-Fe ₂ O ₃六方纳米片：合成和苯胺传感性能

独特的α-Fe ₂ O ₃六方纳米片已通过简便的溶剂热法和后续煅烧过程成功制备。合成的α-Fe ₂ O ₃样品表现出p型导电性能。综合研究了所制造的基于Fe ₂ O ₃纳米片的传感器的气体敏感性，并显示出对苯胺的良好气体传感性能。此外，还研究了苯胺传感机制，并讨论了 p 型电导率的起源。