Li Li, Din Salah Ud, Ul Haq Mahmood, Tang Nian, Zhang Manjun, Rahman Nasir, Zhu Liping
Electric Power Research Institute of Guangdong Power Grid Co., Ltd, Guangzhou, People's Republic of China.
Sulfur Hexafluoride key Lab of China Southern Power Grid, Guangzhou, 510080, People's Republic of China.
Nanotechnology. 2021 May 5;32(30). doi: 10.1088/1361-6528/abf776.
Sulfuryl fluoride (SOF) is one of the ideal decomposition components of sulfur hexafluoride (SF), which is widely used as an insulating and arc extinguishing medium in gas-insulated switchgear. To detect the decomposition component of SFat room temperature, the use of SOFis still a challenge. In this work, we have successfully fabricated TiOnanofibers and nickel sulfate (NiSONPs) via simple electrospun and hydrothermal methods, followed by calcination process to improve the sensing performance. Metal oxide semiconductor materials (MOSs) are widely used in gas sensing applications due to their superior performance and fast recovery speed. Although the performance of our TiO/NiSOcomposite nanofiber sensor decreases at higher temperatures, it shows an excellent response to target gasses at room temperature. Ni-decoration on the outer surface of the nanofibers could maximize the sensing response of 100 ppm SOFby up to 189% at room temperature, showing that the TiO/NiSOcomposite nanofibers are 2.5 times superior to the pure TiOnanofiber sensors. Thus, the approach for this novel composite nanofiber-based material is promising for the fabrication of superior gas sensors for decomposition of SF.
硫酰氟（SOF）是六氟化硫（SF）理想的分解成分之一，六氟化硫在气体绝缘开关设备中被广泛用作绝缘和灭弧介质。要在室温下检测SF的分解成分，使用SOF仍然是一项挑战。在这项工作中，我们通过简单的静电纺丝和水热法成功制备了二氧化钛纳米纤维和硫酸镍（NiSO NPs），随后经过煅烧过程以提高传感性能。金属氧化物半导体材料（MOSs）因其卓越的性能和快速的恢复速度而被广泛应用于气体传感应用中。尽管我们的TiO/NiSO复合纳米纤维传感器在较高温度下性能会下降，但它在室温下对目标气体表现出优异的响应。纳米纤维外表面的镍修饰可使100 ppm SOF在室温下的传感响应最大化，提高达189%，这表明TiO/NiSO复合纳米纤维比纯二氧化钛纳米纤维传感器优越2.5倍。因此，这种基于新型复合纳米纤维材料的方法对于制造用于SF分解的优质气体传感器很有前景。
