The current nding report the effect of palladium nanoparticles and their nanogeometry on the redox electrochemistry of tetracyanoquinodimethane (TCNQ) modi ed electrode. Palladium nanoparticles are made in the presence of two different concentrations of 3-aminopropyltrimethoxysilane followed by calcination at 6000C to yield PdNP-1 and PdNP-2 of the average size of 1 µM size and 12 nm, respectively, and are characterized by TEM and XRD. Three types of TCNQ-modi ed electrodes, namely: (i) TCNQ-1, (ii) TCNQ-2, and TCNQ-3 made with TCNQ alone, TCNQ and PdNP-1; TCNQ with PdNP-2 to understand the dependence of redox electrochemistry of TCNQ on palladium and its nanogeometry. The redox electrochemistry of TCNQ-1, TCNQ-2, and TCNQ-3 with major ndings: (a) the difference in anodic (Epa) and cathodic (Epc) peak potentials decrease from 243 mV to 231 mV; (b) increase in anodic peak current from 9.6 µA to 30 µA under similar conditions; (c) the current function gradually increases from 15 to 29 µA/(mV)0.5; (d) charge transfer resistance decreases from 150 k to 22.1 k; (e) the catalytic current increases from 3.18 to 9.28 µA under similar conditions and (f) sensitivity of electroanalysis under similar condition increases from 5 to 15 µA/mM; are recorded justifying the introduction of electrocatalysis along with mediated electrochemistry. In order to support these assertions, the data from cyclic voltammetry, differential pulse voltammetry, impedance spectroscopy, and amperometry are presented here.
The current finding report the effect of palladium nanoparticles and their nanogeometry on the redox electrochemistry of tetracyanoquinodimethane (TCNQ) modified electrode. Palladium nanoparticles are made in the presence of two different concentrations of 3-aminopropyltrimethoxysilane followed by calcination at 6000C to yield PdNP-1 and PdNP-2 of the average size of 1 µM size and 12 nm, respectively, and are characterized by TEM and XRD. Three types of TCNQ-modified electrodes, namely: (i) TCNQ-1, (ii) TCNQ-2, and TCNQ-3 made with TCNQ alone, TCNQ and PdNP-1; TCNQ with PdNP-2 to understand the dependence of redox electrochemistry of TCNQ on palladium and its nanogeometry. The redox electrochemistry of TCNQ-1, TCNQ-2, and TCNQ-3 with major findings: (a) the difference in anodic (Epa) and cathodic (Epc) peak potentials decrease from 243 mV to 231 mV; (b) increase in anodic peak current from 9.6 µA to 30 µA under similar conditions; (c) the current function gradually increases from 15 to 29 µA/(mV)0.5; (d) charge transfer resistance decreases from 150 k to 22.1 k; (e) the catalytic current increases from 3.18 to 9.28 µA under similar conditions and (f) sensitivity of electroanalysis under similar condition increases from 5 to 15 µA/mM; are recorded justifying the introduction of electrocatalysis along with mediated electrochemistry. In order to support these assertions, the data from cyclic voltammetry, differential pulse voltammetry, impedance spectroscopy, and amperometry are presented here.
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