Here, commercial Pt/C catalyst was modified with graphene nanoplatelets (GNPs) to construct electrochemical acetaminophen (APAP) sensors with high sensitivity and wide linear range. Physical mixture of Pt/C and GNPs with various contents were used to prepare ink formulations for the construction of electrochemical APAP sensors. The carbon content was kept constant to show the effect of GNPs content in the catalyst layer while decreasing the total Pt loading on the electrode surface. The Pt/C and GNPs were characterized using XRD, TEM, XPS, SEM, and EDS techniques. The analytical results indicated that the performance of the sensors was improved after GNPs introduction in Pt/C catalyst. It is of the note that while the amount of precious metal, Pt, on the electrode surface was decreased, the overall sensor performance was enhanced, confirming the importance of the catalyst support on the electrochemical performance of the catalyst systems. The sensors displayed a wide range of 0....

中文翻译：

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石墨烯纳米血小板修饰商用Pt / C催化剂用于灵敏和选择性检测商业片剂中的对乙酰氨基酚

在这里，商用Pt / C催化剂用石墨烯纳米片（GNP）改性，以构建具有高灵敏度和宽线性范围的电化学对乙酰氨基酚（APAP）传感器。使用各种含量的Pt / C和GNP的物理混合物来制备用于构造电化学APAP传感器的油墨配方。碳含量保持恒定以显示催化剂层中GNP含量的影响，同时降低电极表面上的总Pt负载。使用XRD，TEM，XPS，SEM和EDS技术对Pt / C和GNP进行表征。分析结果表明，将GNPs引入Pt / C催化剂后，传感器的性能得到改善。值得注意的是，虽然减少了电极表面上的贵金属Pt的数量，但整体的传感器性能却得到了提高，证实了催化剂载体对催化剂体系电化学性能的重要性。传感器显示范围为0 ...