Publications by authors named "Rafael Matias Silva"

An overview of the latest advances in the design of electrochemical sensor architectures dedicated to the determination of drugs from the statin class is presented in this review. Statins are drugs widely consumed for cholesterol control, and their determination in different matrices through the application of electroanalysis is growing considering advantages such as operational simplicity, lower cost and ease of sample preparation. Within the context of statins, electrochemical sensor architectures can be subdivided into conventional/classical electrodes such as glassy carbon electrodes, carbon paste electrodes, pencil graphite electrodes, boron-doped diamond electrodes and metallic electrodes, and more modern electrode systems, including the screen-printed electrodes and 3D-printed electrodes.

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Article Synopsis
  • Development of electroanalytical chemistry is advanced through using electrochemically reduced graphene oxide (ERGO) films made from recycled graphite from discarded Zn-C batteries.
  • The synthesis of graphene oxide (GO) was confirmed using multiple characterization techniques, and ERGO films displayed superior electrochemical properties when tested with various analytes.
  • The ERGO-based sensors demonstrated high analytical sensitivity and effectiveness in detecting compounds like paracetamol and hydroquinone in synthetic urine and tap water, making them a cost-effective, eco-friendly option for creating electrochemical sensors.
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Electrochemical sensors consisting of screen-printed electrodes (SPEs) are recurrent devices in the recent literature for applications in different fields of interest and contribute to the expanding electroanalytical chemistry field. This is due to inherent characteristics that can be better (or only) achieved with the use of SPEs, including miniaturization, cost reduction, lower sample consumption, compatibility with portable equipment, and disposability. SPEs are also quite versatile; they can be manufactured using different formulations of conductive inks and substrates, and are of varied designs.

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