The technology of 3D printing has emerged as a potent tool for the preparation of 3D-printed electrode. Using commercial graphene/polylactic acid (PLA) composite filaments as printed materials, fused deposition modeling as 3D-printed technique, 3D printed electrodes (3DEs) were created in this work. Gold nanoparticles (AuNPs) and the composites of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) were used to modify the activated 3DEs for constructing a novel electrode (SACP@Au@3DE), and in this work chlorogenic acid (CGA) was regarded as a probe for testing the performance of SACP@Au@3DE. The surface physicochemical properties of the prepared 3DEs were characterized by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The electrochemical properties of the prepared 3DEs were investigated using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) methods. The constructed SACP@Au@3DE can be used to determine CGA at concentrations ranging from 10 to 400 μM with a limit of detection (LOD) of 4.13 μM. Ultimately, the SACP@Au@3DE sensor was used for CGA detection in coffee powder sample to explore the potential for real sample analysis. This work opens the novel avenue of using conductive polymer modified 3D-printed electrode in the field of sensor.

中文翻译：

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一种通过改性3D打印纳米碳电极上的导电聚合物来改善电化学性能的新方法


3D打印技术已成为制备3D打印电极的有力工具。这项工作使用商业石墨烯/聚乳酸（PLA）复合丝作为打印材料，熔融沉积建模作为3D打印技术，创建了3D打印电极（3DE）。金纳米粒子（AuNPs）和聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸）（PEDOT：PSS）复合材料被用来修饰活化的3DEs以构建新型电极（SACP@Au@3DE），并在这项工作将绿原酸（CGA）作为测试SACP@Au@3DE性能的探针。通过扫描电子显微镜（SEM）和X射线光电子能谱（XPS）对所制备的3DE的表面物理化学性质进行了表征。使用循环伏安法（CV）和电化学阻抗谱（EIS）方法研究了所制备的3DE的电化学性能。构建的 SACP@Au@3DE 可用于测定浓度范围为 10 至 400 μM 的 CGA，检测限 (LOD) 为 4.13 μM。最终，SACP@Au@3DE传感器被用于咖啡粉样品中的CGA检测，以探索实际样品分析的潜力。这项工作开辟了在传感器领域使用导电聚合物修饰的3D打印电极的新途径。