Abstract A facile, efficient and novel strategy was developed for the preparation of reduced Graphene Oxide/Carbon Dots (rGO/CDs) by electrospinning and annealing of an organic polymer. In the present investigation, rGO/CDs was prepared from poly (vinylidene fluoride-co-hexafluoropylene) [P(VDF-HFP] based nanofiber fabricated via electrospinning technique followed by calcination. Formation of rGO/CDs was confirmed with the help of X-Ray diffraction (XRD). FTIR and XPS analyses indicate the presence of C and O in nanostructure, which demonstrates that this method can efficiently convert calcined polymeric nanofiber into rGO/CDs. FE-SEM micrographs reveal the morphological changes of the nanofiber membrane during the calcination process. The material shows excellent property to detect dopamine (DA). In the case of CV, a linear relationship for the DA concentration is observed in the range of 0.5µM to 20µM and, linear regression equation is y = 8.32667x + 0.0524 through correlation coefficient (R2) = 0.99174, with a detection limit of 1.41 µM. All the electrochemical measurements were performed in 0.1 M phosphate buffer solution (PBS) of pH 7.2 as a supporting electrolyte. Therefore, the rGO/CDs/GCE electrode can be effectively applied to the quantitative analysis of DA.

中文翻译：

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rGO/CDs 通过电纺煅烧工艺的生长机制：结构和应用

摘要 开发了一种通过有机聚合物的静电纺丝和退火制备还原氧化石墨烯/碳点 (rGO/CDs) 的简便、高效和新颖的策略。在本研究中，rGO/CDs 由聚（偏二氟乙烯-共六氟丙烯）[P(VDF-HFP]基纳米纤维通过静电纺丝技术制备，然后煅烧。rGO/CDs 的形成在 X-的帮助下得到证实。射线衍射 (XRD). FTIR 和 XPS 分析表明纳米结构中存在 C 和 O，这表明该方法可以有效地将煅烧的聚合物纳米纤维转化为 rGO/CD。FE-SEM 显微照片揭示了纳米纤维膜在此过程中的形态变化煅烧过程。该材料表现出优异的检测多巴胺（DA）的特性。在CV的情况下，在 0.5µM 至 20µM 范围内观察到 DA 浓度的线性关系，线性回归方程为 y = 8.32667x + 0.0524，相关系数 (R2) = 0.99174，检测限为 1.41 µM。所有电化学测量均在 pH 7.2 的 0.1 M 磷酸盐缓冲溶液 (PBS) 作为支持电解质中进行。因此，rGO/CDs/GCE 电极可以有效地应用于 DA 的定量分析。