Ahmad Khursheed, Kim Haekyoung
School of Materials Science and Engineering, Yeungnam University, Gyeongsan 38541, Korea.
Nanomaterials (Basel). 2022 Jul 16;12(14):2443. doi: 10.3390/nano12142443.
In recent years, the electrochemical sensing approach has attracted electrochemists because of its excellent detection process, simplicity, high sensitivity, cost-effectiveness, and high selectivity. In this study, we prepared nitrogen doped reduced graphene oxide (N-rGO) and characterized it using various advanced techniques such as XRD, SEM, EDX, Raman, and XPS. Furthermore, we modified the active surface of a screen printed carbon electrode (SPCE) via the drop-casting of N-rGO. This modified electrode (N-rGO/SPCE) exhibited an excellent detection limit (LOD) of 0.83 µM with a decent sensitivity of 4.34 µAµMcm for the detection of hydrogen peroxide (HO). In addition, N-rGO/SPCE also showed excellent selectivity, repeatability, and stability for the sensing of HO. Real sample investigations were also carried out that showed decent recovery.
近年来，电化学传感方法因其出色的检测过程、简便性、高灵敏度、成本效益和高选择性而吸引了电化学家。在本研究中，我们制备了氮掺杂还原氧化石墨烯（N-rGO），并使用XRD、SEM、EDX、拉曼和XPS等各种先进技术对其进行了表征。此外，我们通过滴铸N-rGO对丝网印刷碳电极（SPCE）的活性表面进行了修饰。这种修饰电极（N-rGO/SPCE）在检测过氧化氢（HO）时表现出出色的检测限（LOD）为0.83 µM，灵敏度为4.34 µAµMcm。此外，N-rGO/SPCE在HO传感方面还表现出出色的选择性、重复性和稳定性。还进行了实际样品研究，结果显示回收率良好。
