Electrodeposited gold nanostructures at Nafion–poly(o-phenylenediamine) modified electrode and its electrocatalytic application

Rameshkumar, Perumal; Ramaraj, Ramasamy

doi:10.1016/j.jelechem.2015.01.013

Cited by 7 publications

(2 citation statements)

References 48 publications

(58 reference statements)

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“…5 With the rapid development of interconnection and nanosensor fabrication, nanocrystalline materials with ne grains are urgently needed to meet the increasing demand of nano-and microdevices. 6,7 Due to its excellent electrical and thermal conductivity, chemical stability, high ductility, and wear resistance, nanocrystalline gold electrodeposits are an ideal material in several elds [8][9][10][11] such as microelectronics, 12 microsystem technologies, 13 biotechnology, [14][15][16] surface modication, [17][18][19] and basic scientic research. 20 In order to replace the application of hazardous cyanide in gold electrodeposition, a number of cyanide-free gold electroplating electrolytes have been investigated over recent years.…”

Section: Introductionmentioning

confidence: 99%

Role of polyethyleneimine as an additive in cyanide-free electrolytes for gold electrodeposition

et al. 2015

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The influence of polyethyleneimine (PEI) on the electrochemical behavior of cyanide-free electrolytes with 5,5-dimethylhydantoin (DMH) as a complexing agent was investigated using cyclic voltammetry (CV), chronoamperometry, and cathodic polarization measurements. The gold electrodeposition displayed three-dimensional (3-D) progressive nucleation in both the absence and presence of PEI according to the Scharifer and Hills (SH) nucleation model. With the addition of PEI, the cathodic overpotential showed an immense negative shift, and the limiting diffusion current density and the diffusion coefficient decreased. Gold electrodeposits were characterized by SEM and AFM for the micromorphology, XRD for the crystal structure, and XPS for the purity. There was preferential growth of gold crystals along the (111) crystal face in both the presence and absence of PEI, but overall growth was inhibited in the presence of PEI. The quality of the gold electrodeposit was significantly improved in the presence of PEI, with a bright golden color and high purity, smooth and compact morphology.

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Section: Introductionmentioning

confidence: 99%

Role of polyethyleneimine as an additive in cyanide-free electrolytes for gold electrodeposition

et al. 2015

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“…Moreover, PoPD has a high conductivity in its reduced form, which provides a special potential window for electroactive analytes . Based on the unique properties of PoPD films, they have been used as an electrode material for the sensing of various compounds, including oxygen , glucose , hydrogen peroxide , and l‐lysine .…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Determination of Rosmarinic Acid and Protocatechuic Acid at Poly(o‐Phenylenediamine)/Pt Nanoparticles Modified Glassy Carbon Electrode

Özdokur

Koçak

2019

Electroanalysis

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A system of Pt nanoparticles and poly(ortho‐phenylenediamine) film electrochemically deposited onto a glassy carbon electrode (GCE/PoPD/Pt) was fabricated. Scanning electron microscopy, Fourier‐transform infrared spectroscopy, and atomic force microscopy techniques were used to identify the surface characteristics of the composite electrode. The conductive polymers and Pt nanoparticles together resulted in a synergistic effect, and the new formed surface was highly active against polyphenolic structures. Rosmarinic acid (RA) and protocatechuic acid (PCA) are phenolic compounds found in plants, and they are used in many applications, particularly as pharmaceuticals. The GCE/PoPD/Pt was used for the simultaneous determination of RA and PCA in a pH 2.0 H2SO4 solution for the first time. The RA and PCA concentrations were determined using differential pulse voltammetry (DPV) and chronoamperometry. By the amperometry measurement, for RA and PCA, a linear relation was observed in the concentration ranges of 1–55 μmol L−1 and 1–60 μmol L−1, with detection limits of 0.5 μmol L−1 and 0.6 μmol L−1, respectively. In the simultaneous determination with DPV, the detection limits for both RA and PCA were calculated as 0.7 μmol L−1. The GCE/PoPD/Pt was successfully used for the simultaneous determination of RA and PCA in a real sample, and its accuracy was verified by high‐performance liquid chromatography studies.

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Electrochemically co-deposited silicate sol–gel/PdAu alloy nanostructures and their application in electrocatalytic methanol oxidation

Praveen

Ramaraj

2022

J Chem Sci

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Electrodeposited gold nanostructures at Nafion–poly(o-phenylenediamine) modified electrode and its electrocatalytic application

Cited by 7 publications

References 48 publications

Role of polyethyleneimine as an additive in cyanide-free electrolytes for gold electrodeposition

Role of polyethyleneimine as an additive in cyanide-free electrolytes for gold electrodeposition

Simultaneous Determination of Rosmarinic Acid and Protocatechuic Acid at Poly(o‐Phenylenediamine)/Pt Nanoparticles Modified Glassy Carbon Electrode

Electrochemically co-deposited silicate sol–gel/PdAu alloy nanostructures and their application in electrocatalytic methanol oxidation

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