Novel Screen‐Printed Sensor with Chemically Deposited Boron‐Doped Diamond Electrode: Preparation, Characterization, and Application

0556671 - ÚFCH JH 2023 RIV CH eng J - Článek v odborném periodiku
Matvieiev, O. - Šelešovská, R. - Vojs, M. - Marton, M. - Michniak, P. - Hrdlička, Vojtěch - Hatala, M. - Janíková, L. - Chýlková, J. - Skopalová, J. - Cankař, P. - Navrátil, Tomáš
Novel Screen‐Printed Sensor with Chemically Deposited Boron‐Doped Diamond Electrode: Preparation, Characterization, and Application.
Biosensors. Roč. 12, č. 4 (2022), č. článku 241. E-ISSN 2079-6374
Grant CEP: GA ČR(CZ) GA20-01589S
Institucionální podpora: RVO:61388955
Klíčová slova: screen-printed sensor * boron-doped diamond electrode * electrochemical properties
Obor OECD: Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Impakt faktor: 5.4, rok: 2022
Způsob publikování: Open access

New screen-printed sensor with a boron-doped diamond working electrode (SP/BDDE) was fabricated using a large-area linear antenna microwave chemical deposition vapor system (LA-MWCVD) with a novel precursor composition. It combines the advantages of disposable printed sensors, such as tailored design, low cost, and easy mass production, with excellent electrochemical properties of BDDE, including a wide available potential window, low background currents, chemical resistance, and resistance to passivation. The newly prepared SP/BDDEs were characterized by scanning electron microscopy (SEM) and Raman spectroscopy. Their electrochemical properties were investigated by cyclic voltammetry and electrochemical impedance spectroscopy using inner sphere ([Fe(CN)6]4−/3−) and outer sphere ([Ru(NH3)6]2+/3+) redox probes. Moreover, the applicability of these new sensors was verified by analysis of the anti-inflammatory drug lornoxicam in model and pharmaceutical samples. Using optimized differential pulse voltammetry in Britton–Robinson buffer of pH 3, detection limits for lornoxicam were 9 × 10−8 mol L−1. The oxidation mechanism of lornoxicam was investigated using bulk electrolysis and online electrochemical cell with mass spectrometry, nine distinct reaction steps and corresponding products and intermediates were identified.
Trvalý link: http://hdl.handle.net/11104/0330784