Cu@Pd core-shell nanostructures for highly sensitive and selective amperometric analysis of histamine

Copper-Palladium Core-Shell Bifunctional Nanoelectrocatalyst for Ethanol Oxidation and Hydrogen Evolution Reactions

“…Atomic ratio between Cu and Pd on the sample was calculated to be 37.7:62.3. The high amount of Cu in the present studies compared to our earlier reports (17.44 : 82.56) 18 may be due to the variation in the copper deposition. Previously Cu deposition was carried out for 120 s while in the present studies, the deposition was carried out for 300 s, which is expected to increase the copper loading on the PGE surface.…”

“…Electrodeposition of copper on pencil graphite (Cu/PGE) was carried out by following our earlier report 17 . Briefly, the deposition was carried out at -0.7 V vs. SCE in a solution containing 15 mM CuSO 4 as copper precursor and 0.1 M Na 2 SO 4 as supporting electrolyte in presence of SDS as a soft template for a duration of 300 s. Galvanic replacement reaction (GRR) of Pd on Cu/PGE for the preparation of Cu@Pd core-shell nanostructures was carried out by using 1 mM PdCl 2 solution 18 . It was observed that direct deposition of Pd on PGE was not stable to carry out any electrocatalytic studies due to low adhesion of Pd directly onto the PGE.…”

“…1(A-B). In comparison with the electrodeposited copper on pencil graphite, Cu@Pd/PGE exhibits dendritic nanostructures, and resembles the morphologies of copper adatoms that were prepared by the template electrodeposition method 17,18 . The vertical growth of dendritic structures also provided a good porosity for the material as evidenced from these figures.…”

Formation, Analytical Methods, Change Tendency, and Control Strategies of Biogenic Amines in Canned Aquatic Products: A Systematic Review

“…The characteristics of the proposed methods for the determination of BAs are listed in (1,33,48,70,82,90,114). The table highlights some peculiarities of some of the proposed methods.…”

Solid-Contact Ion-Selective Electrodes for Histamine Determination

“…In comparison with these methods, electrochemical analyses have been rapidly developed in recent years due to their advantages of low cost, fast responses, reproducibility, reasonable sensitivity and storage stability [ 18 , 19 , 20 ]. When amperometric electrodes, one of the electrochemical analytical methods, are utilized for HA determination, a high potential is necessary for a redox reaction with which to detect the current characteristics, and the redox product is unfavorable for the nervous system [ 21 , 22 ]. Although modern impedimetric electrodes, another electrochemical method, minimize unwanted cell depolarization with lower voltages [ 23 ], the complex models and analyses are not universal [ 24 ].…”