A green approach for the preparation of carbon black (CB) and electrochemically reduced graphene oxide composite (ERGO) is described based on screen printed carbon electrodes (SPCEs) fabricated on poly(ethylene terephthalate) (PET) as electrochemical sensors. This approach leads to a heterogeneous hydrophilic surface with high concentration of defect sites according to scanning electron microscopy, contact angle and Raman spectroscopy measurements. The SPCE/CB-ERGO sensor was tested with dopamine (DA), epinephrine (EP) and paracetamol (PCM), exhibiting an enhanced electrocatalytic performance compared to the bare SPCE. It displayed a wider linear range, lower limit of detection and a remarkably higher analytical sensitivity, viz. 1.5, 0.13 and 0.028 A L mol⁻¹ for DA, EP and PCM, respectively, being also capable of simultaneous determination of the three analytes. Such high performance is demonstration that SPCE/CB-ERGO may serve as generic platform for cost-effective flexible electrochemical sensors.

基于在聚对苯二甲酸乙二醇酯（PET）上制造的丝网印刷碳电极（SPCE）作为电化学传感器，描述了一种制备炭黑（CB）和电化学还原氧化石墨烯复合材料（ERGO）的绿色方法。根据扫描电子显微镜，接触角和拉曼光谱测量，这种方法导致具有高浓度缺陷位点的异质亲水表面。SPCE / CB-ERGO传感器用多巴胺（DA），肾上腺素（EP）和对乙酰氨基酚（PCM）进行了测试，与裸露的SPCE相比，其电催化性能更高。它显示出更宽的线性范围，更低的检出限和显着更高的分析灵敏度，即。1.5、0.13和0.028 A L mol ^-1分别适用于DA，EP和PCM，还可以同时测定三种分析物。如此高的性能证明SPCE / CB-ERGO可以用作具有成本效益的柔性电化学传感器的通用平台。