In the present work, binder-free, stable, high-performance and ultrasensitive platform is proposed for the accurate estimation of hydrazine by using a facile synthesized few-layered sulphur-doped graphene (SG)-modified glassy carbon electrode (SG/GCE). This proposed SG/GCE facilitates hydrazine to be catalytically oxidized at low overpotential. The SG was synthesized by a facile microwave-assisted solvothermal route, further examined by electron microscopy, Raman and FTIR spectroscopy and identified as a suitable catalyst material for sensing platform. Experiments were conducted to typify the electrode as a sensor for the estimation of hydrazine. The SG-modified electrode exhibited overpotential of hydrazine oxidation at 0.31 V, which is lower than many other electrochemical sensors. The linear calibration plots were obtained over the range of 0.5–6 µM in chronoamperometry and the limit of detection is as low as 0.25 μM. It is one of the finest reports in terms of high sensitivity and low limit of detection has also been achieved. It is concluded that SG exhibited an efficient sensor platform for hydrazine determination.

在目前的工作中，提出了一种无粘合剂、稳定、高性能和超灵敏的平台，通过使用简便合成的少层掺硫石墨烯 (SG) 修饰的玻碳电极 (SG/GCE) 来准确估计肼. 这种提议的 SG/GCE 促进了肼在低过电位下被催化氧化。SG 是通过简便的微波辅助溶剂热途径合成的，通过电子显微镜、拉曼和 FTIR 光谱进一步检查，并被确定为适合传感平台的催化剂材料。进行实验以将电极典型地作为用于估计肼的传感器。SG 修饰的电极在 0.31 V 时表现出肼氧化过电位，低于许多其他电化学传感器。线性校准图是在 0 范围内获得的。在计时电流法中为 5–6 µM，检测限低至 0.25 µM。就高灵敏度和低检测限而言，它是最好的报告之一。结论是，SG 展示了一个有效的传感器平台，用于测定肼。