1. Electrodes for Paracetamol Sensing Modified with Bismuth Oxide and Oxynitrate Heterostructures: An Experimental and Computational Study
- Author
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Filippo Franceschini, Mattia Bartoli, Alberto Tagliaferro, and Sandro Carrara
- Subjects
Technology ,paracetamol ,screen-printed electrode ,electrochemical sensor ,QD415-436 ,Biochemistry ,Analytical Chemistry ,sensor ,nitrate ,bismuth ,Electrochemistry ,electron transfer rate ,POLLUTANTS ,Physical and Theoretical Chemistry ,electrochemical oxidation ,Instruments & Instrumentation ,nanomaterials ,acetaminophen ,NANOMATERIALS ,Science & Technology ,ELECTROCHEMICAL OXIDATION ,Chemistry, Analytical ,SENSOR ,biosensors ,Chemistry ,pollutants ,Physical Sciences ,BIOSENSORS ,ACETAMINOPHEN ,Bismuth ,Electrochemical sensor ,Electron transfer rate ,Paracetamol ,Screen-printed electrode ,NITRATE - Abstract
In this work, novel platforms for paracetamol sensing were developed by the deposition of Bi2O3, Bi5O7NO3 and their heterostructures onto screen-printed carbon-paste electrodes. An easy and scalable solid state synthesis route was employed, and by setting the calcination temperatures at 500 °C and 525 °C we induced the formation of heterostructures of Bi2O3 and Bi5O7NO3. Cyclic voltammetry measurements highlighted that the heterostructure produced at 500 °C provided a significant enhancement in performance compared to the monophases of Bi2O and Bi5O7NO3, respectively. That heterostructure showed a mean peak-to-peak separation Ep of 411 mV and a sensitivity increment of up to 70% compared to bare electrodes. A computational study was also performed in order to evaluate the geometrical and kinetic parameters of representative clusters of bismuth oxide and subnitrate when they interact with paracetamol.
- Published
- 2021