Cobalt monosulfide nanofibers:ethanol sensing and magnetic properties

• 作者: Zhi-Da Hu Xi-Yu Sun Hang-Fei Li Ya-Ru Kang Xian-Qiang Song Peng Wang Qiao-Tong Luan Xue-Dong Wang Zong-Tao Chi Wan-Feng Xie
• 来源期刊: 稀有金属（英文版）
• 年，卷（期）: 2021,（6）
• 所属期刊栏目: ADVANCED NANOMATERIALS FOR GAS AND HUMIDITY SENSORS
• 页码范围: 1554-1560
• 页数: 7页
• 语种: 英文

摘要

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 crys-talline 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 electro-spinning and atmospheric calcination routes under con-trollable conditions.It was found that the CoS nanofibers exhibited ethanol sensing properties at the optimum working temperature of 200 ℃,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.