Abstract A novel strategy for the preparation of reusable carbon electrode containing carbon black (CB) has been developed. CB has been introduced as the conductive and sensitive component, together with graphite, in the composite electrode material of Sonogel-Carbon (SNGC) electrodes, obtaining SNGC-CB electrodes. A complete characterization of the electrodes has been performed using scanning electron microscopy, Raman spectroscopy, cyclic voltammetry and impedance spectroscopy. The overall procedure for the preparation of the electrodes is very fast, cost effective, simple and characterized by high reproducibility, leading to RSD = 2.4%. The presence of CB nanostructures in the formulation leads to improved performances in the detection of small phenolic molecules, such as dihydroxybenzenes with respect to pristine SNGC electrodes. In particular, the device allows the electrochemical determination of catechol with high sensitivity and low limit of detection, even in the presence of one of its isomers, namely hydroquinone. Measurements performed in water samples has led to good apparent recovery.

中文翻译：

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含炭黑的可重复使用的声凝胶碳电极的制备和表征：作为安培传感器测定儿茶酚的应用

摘要 已开发出一种制备含炭黑 (CB) 的可重复使用碳电极的新策略。在Sonogel-Carbon（SNGC）电极的复合电极材料中，将CB作为导电敏感成分与石墨一起引入，得到SNGC-CB电极。使用扫描电子显微镜、拉曼光谱、循环伏安法和阻抗光谱对电极进行了完整的表征。电极制备的整个过程非常快速、具有成本效益、简单且具有高重现性的特点，导致 RSD = 2.4%。配方中 CB 纳米结构的存在提高了检测小酚类分子的性能，例如相对于原始 SNGC 电极的二羟基苯。特别是，该装置允许以高灵敏度和低检测限对儿茶酚进行电化学测定，即使存在其异构体之一，即对苯二酚。在水样中进行的测量得到了良好的表观回收率。