Abstract Metal sulfide nanomaterials have attracted great interest because of their excellent properties and promising applications in sensing, energy harvesting, magnetic and optoelectronic devices, especially their well-aligned crystalline nanostructures are highly desirable for the enhanced performance and novel applications. In this study, the cobalt monosulfide (CoS) nanofibers with uniform shape and good crystallinity were firstly obtained via electrospinning and atmospheric calcination routes under controllable conditions. It was found that the CoS nanofibers exhibited ethanol sensing properties at the optimum working temperature of 200 °C, the response was 11.6 toward 100 × 10 −6 ethanol gas, and the CoS nanofibers-based sensor exhibits a short response time and recovery time of 5 and 6 s at the optimum temperature, respectively, the result also shows that the sensor has good stability after 50 days, which would be a favorable characteristic as a promising sensor. In addition, the Pauli paramagnetic property of CoS nanofibers was also investigated at room temperature. Graphic abstract

中文翻译：

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一硫化钴纳米纤维：乙醇传感和磁性

摘要 金属硫化物纳米材料因其优异的性能和在传感、能量收集、磁性和光电器件中的应用前景而引起了人们的极大兴趣，尤其是其排列良好的晶体纳米结构对于提高性能和新颖的应用非常理想。本研究首先在可控条件下通过静电纺丝和常压煅烧途径获得了形状均匀、结晶度好的单硫化钴（CoS）纳米纤维。发现 CoS 纳米纤维在 200 °C 的最佳工作温度下表现出乙醇传感特性，对 100 × 10 -6 乙醇气体的响应为 11.6，基于 CoS 纳米纤维的传感器具有较短的响应时间和恢复时间分别在最佳温度下 5 和 6 秒，结果还表明，该传感器在 50 天后具有良好的稳定性，这将是一个有前途的传感器的良好特性。此外，还在室温下研究了 CoS 纳米纤维的泡利顺磁性。图形摘要