A novel electroactive composite based on silicotungstic acid (SiW), poly-о-phenylenediamine (PPD) and reduced form of graphene oxide (RGO) was prepared by electrochemical synthesis on a planar screen printed carbon electrode (SPCE) coated with graphene oxide (GO). The new material was shown to have expressed electrocatalytic activity for the example of electrochemical behavior of the p-benzoquinone/hydroquinone redox couple on the RGO-PPD-SiW-modified electrode. Unlike most composites containing heteropolyacid anions, RGO-PPD-SiW demonstrates its properties not only in an acid but also in a neutral saline solution. The potential cycling in a saline solution retains some cyclic voltammogram (CVA) peaks observed in 1 М H₂SO₄ environment. An addition of a local anesthetic of amide series (lidocaine, naropin, or chirocaine) to a saline solution was shown to change the CVA shape immediately. This example demonstrates that the novel composite may be further used in creating a sensor of planar design.

通过在涂有氧化石墨烯（GO）的平面丝网印刷碳电极（SPCE）上进行电化学合成，制备了一种基于硅钨酸（SiW），聚对苯二胺（PPD）和还原形式的氧化石墨烯（RGO）的新型电活性复合材料。 ）。以RGO-PPD-SiW修饰电极上的对苯醌/对苯二酚氧化还原对的电化学行为为例，该新材料已显示出具有电催化活性。与大多数包含杂多酸阴离子的复合材料不同，RGO-PPD-SiW不仅在酸中而且在中性盐水溶液中均显示出其特性。在盐溶液中的潜在循环保留了在1МH ₂ SO _4中观察到的一些循环伏安图（CVA）峰环境。结果表明，在盐溶液中添加酰胺系列（利多卡因，萘丁肽或手性可卡因）的局部麻醉剂可立即改变CVA形状。该示例表明，该新型复合材料可进一步用于创建平面设计的传感器。