Abstract The graphitic carbon nitride-graphene nanoplatelets (g-C3N4/GNP) composite was synthesized. Field Emission Scanning Electron Microscopy (FE-SEM), Energy Dispersive X-ray spectroscopy (EDS), Fourier Transform Infrared (FT-IR) spectroscopy, and X-Ray powder Diffraction (XRD) techniques were the techniques employed for the identifying the prepared nanocomposite. The synthesized nanocomposite was used to fabricate a surface modified glassy carbon electrode (g-C3N4/GNP-GCE). This modified electrode was employed for the selective and sensitive detection of noscapine (NOS) by the voltammetric methods LSV, CV and DPV. The results approved that application of the developed working electrode in DPV technique provides a sensitive NOS detection method (LOD 10 nM) in the phosphate buffer (pH 6.0) solution. Under the optimum conditions, the variation of the peak current as a function of the concentration of NOS was linear in the range of 0.05–27.0 μM. The developed working electrode presented acceptable selectivity, stability, repeatability, and reproducibility. The potential of g-C3N4/GNP-GCE was demonstrated by its application for the monitoring of NOS in real samples.

中文翻译：

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石墨氮化碳-石墨烯纳米片；在那可品的灵敏电化学检测中的应用

摘要 合成了石墨氮化碳-石墨烯纳米片（g-C3N4/GNP）复合材料。场发射扫描电子显微镜 (FE-SEM)、能量色散 X 射线光谱 (EDS)、傅立叶变换红外 (FT-IR) 光谱和 X 射线粉末衍射 (XRD) 技术是用于鉴定制备的技术纳米复合材料。合成的纳米复合材料用于制造表面改性的玻碳电极（g-C3N4/GNP-GCE）。该修饰电极用于通过伏安法 LSV、CV 和 DPV 选择性和灵敏地检测诺斯卡品 (NOS)。结果证实，开发的工作电极在 DPV 技术中的应用提供了一种在磷酸盐缓冲液 (pH 6.0) 溶液中灵敏的 NOS 检测方法 (LOD 10 nM)。在最佳条件下，作为 NOS 浓度函数的峰值电流的变化在 0.05-27.0 μM 范围内呈线性。开发的工作电极具有可接受的选择性、稳定性、重复性和再现性。g-C3N4/GNP-GCE 的潜力通过其在实际样品中监测 NOS 的应用得到证明。