Fabrication of an electrochemical sensor based on copper waste wire recycling and its application

A Novel Electrochemical Sensor for Detection of Nicotine in Tobacco Products Based on Graphene Oxide Nanosheets Conjugated with (1,2-Naphthoquinone-4-Sulphonic Acid) Modified Glassy Carbon Electrode

“…The calculated slope of 60 mV is very close to the theoretical value (59 mV) of the Nernst equation. Therefore, the oxidation process of NIC on the surface of GO/Nq/GCE involves the same number of protons and electrons [ 52 , 53 , 54 ]. This segment of the curves (∼pH 8.0–9.0) is close to the pK a1 due to changes in protonation of the acid–base functions in the pyrrolidine moiety.…”

Label-free electrochemical aptasensor for rapid detection of SARS-CoV-2 spike glycoprotein based on the composite of Cu(OH)2 nanorods arrays as a high-performance surface substrate

“…Copper nanoparticles have been widely used owing to their distinctive properties including: availability, easy synthesis, cost-effective, low toxicity and biocompatibility [41] , [44] , [52] , [53] . Among the various methods of synthesizing copper nanoparticles, the in-situ growth method is an attractive method because nanoparticles can be synthesized directly on the surface of electrode without the need for adhesives and organic solvents, which is fast and facile synthesis procedure and has the ability to morphological controllability and thickness.…”

An amplified electrochemical sensor employing one-step synthesized nickel–copper–zinc ferrite/carboxymethyl cellulose/graphene oxide nanosheets composite for sensitive analysis of omeprazole

“…Furthermore, based on the theory of Laviron for an irreversible electrode process and the E-Log ν plot (Fig. S4†), and following equation (eqn (2)), 91 the catalytic rate constant ( k s ) and the values of electron transfer coefficients ( α n ) of OMP electrooxidation were calculated at the Ni 0.4 Cu 0.2 Zn 0.4 Fe 2 O 4 /CMC/GONs/GCE.where n , F , R , T and other symbols have their conventional and usual meanings. By using the Laviron equation, the α n and K s (catalytic constant) were calculated to be about 0.47 and 1.31 s −1 , respectively.…”