Silver electrodeposition from water–acetonitrile mixed solvents in the presence of tetrabutylammonium perchlorate

Mele, Claudio; Bozzini, Benedetto

doi:10.1007/s10008-008-0724-y

Cited by 8 publications

(6 citation statements)

References 23 publications

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“…4 are in complete agreement with those reported for TBA + when tetrabutylammonium perchlorate was added to other electrolytes during Ag electrodeposition at 0.2V. 36 The analysis of the SERS spectra of TBAN discussed in the ESI, † support a parallel orientation of the C-C bond (H 2 C-CH 3 ) relative to the Cu surface.…”

Section: Cyclic Voltammetrysupporting

confidence: 84%

“…Referring to TBAN, there is only one paper reporting the SERS spectrum of the tetrabutylammonium cation in an experiment where tetrabutylammonium perchlorate was added to other electrolytes during silver electrodeposition. 36 Due to the lack of a complete vibrational study of this cation and to some mistakes in the assignment of the Raman spectra of solid TBA perchlorate, 36 we have carried out a DFT quantum mechanical calculation of the vibrational frequencies of the cation moiety of TBAN. The results are given in the ESI, † together with the Raman spectrum of solid TBAN and its assignment, which also allows the interpretation of the SERS spectrum observed here.…”

Section: Cyclic Voltammetrymentioning

confidence: 99%

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Electrochemical SERS study on a copper electrode of the insoluble organic pigment quinacridone quinone using ionic liquids (BMIMCl and TBAN) as dispersing agents

Puerto

Cuesta

Sánchez-Cortés

et al. 2013

Analyst

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SERS detection of quinacridone quinone (QAQ), an insoluble synthetic organic pigment relevant to modern artworks, is reported here. The use of ionic liquids (BMIMCl and TBAN) as dispersing agents has allowed us to carry out electrochemical SERS experiments of QAQ in aqueous solution using a Cu electrode. No SERS spectra were obtained either from the ionic liquids (ILs) or from QAQ when silver/ gold colloids were employed. The spectra of the Cu electrode in 0.1 M KCl aqueous solutions containing either BMIMCl or TBAN indicate that the corresponding cations approach the metal surface through formation of an ion pair with specifically adsorbed Cl À , but the corresponding cyclic voltammograms only show reduction and oxidation of the Cu surface. In the case of QAQ dispersed in BMIMCl and TBAN, two different SERS spectra due to QAQ species are observed between À0.4 and À1.0 V. One of the spectra agrees with the SERS of QAQ previously reported by us, using calixarenes as dispersing agents and silver colloids as SERS substrates. The other spectrum reveals a reallocation of the charge of the QAQ molecule, concomitant with a change in its relative orientation to the Cu surface. The SERS detection of QAQ is free from interferences of bands corresponding to the ILs.

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Section: Cyclic Voltammetrysupporting

confidence: 84%

Section: Cyclic Voltammetrymentioning

confidence: 99%

Electrochemical SERS study on a copper electrode of the insoluble organic pigment quinacridone quinone using ionic liquids (BMIMCl and TBAN) as dispersing agents

Puerto

Cuesta

Sánchez-Cortés

et al. 2013

Analyst

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“…In panel (A) it can be noticed that the spectral pattern recorded under OCP conditions with an ORC-treated Au electrode shows the bands at 385 and 755 cm À1 corresponding to the C-C^N bending and CH rocking modesalso accompanied by the skeletal C-C at 923 cm À1 (not shown)of the CH 3 CN solvent. 63 The Raman spectra recorded during the application of a sequence of anodic potentials up to 2 V feature well-dened peaks at 253-270 and 332-346 cm À1 together with a set of broad bands in the range of 500-750 cm À1 . The peaks at 253 and 270 cm À1 lie in the typical Raman shi range of poorly diagnostic M-O stretching and M-O-M bending vibrations 40,84 that can be attributed to Mn(II, III, IV) oxy-hydroxides.…”

Section: Resultsmentioning

confidence: 98%

“…60,61 Basicity is further ensured by acetonitrile hydrolysis, yielding acetic acid and NH 3 . 62,63 Perchlorate counter-ions ensure the electronic and structural properties required for the co-electrodeposition of PPy/metal oxide composites. In fact, a crucial aspect of the composite plating of metals and conducting polymers is that the latter materials are generally doped and conductive under anodic conditions (both during electropolymerisation and in contact with electrolytes containing doping anions), while under the cathodic polarisation typical of metal electrodeposition, they are undoped and become insulating.…”

Section: Electrochemical Measurements and Methodsmentioning

confidence: 99%

Electrodeposition and pyrolysis of Mn/polypyrrole nanocomposites: a study based on soft X-ray absorption, fluorescence and photoelectron microspectroscopies

et al. 2015

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Electrodeposition of manganese/polypyrrole (Mn/PPy) nanocomposites has been recently shown to be a technologically-relevant synthesis method for the fabrication of Oxygen Reduction Reaction (ORR) electrocatalysis. In this study we have grown such composites with a potentiostatic anodic/cathodic pulse-plating procedure and characterised them by a multi-technique approach, combining a suite of in situ and ex situ spectroscopic methods with electrochemical measurements.We have thus achieved a sound degree of molecular-level understanding of the hybrid coelectrodeposition process consisting in the electropolymerisation of polypyrrole with incorporation of Mn. By in situ Raman we followed the formation of MnO x and polymer by monitoring the buildup and development of the relevant vibrational bands. The compositional and chemical-state distribution of the as-deposited material has been investigated ex situ by soft X-ray fluorescence (XRF) mapping and micro-absorption spectroscopy (micro-XAS). XRF shows that the spatial distribution of Mn is consistent in a rather wide range of current densities (c.d.), while micro-XAS reveals a mixture of Mn valencies, with higher oxidation states prevailing at higher c.d.s. The pyrolysis of the electrodeposits, desirable for obtaining more durable and active catalysts, has been followed in situ by photoelectron microspectroscopy, allowing to assess the evolution of: (i) the electrodeposit morphology, resulting in a uniform distribution of nanoparticles; (ii) the chemical state of manganese, changing from a mixture of valences to a final state consisting of Mn(III) andMn(IV) oxides and (iii) the bonding nature of nitrogen, from initially N-pyrrolic to a combination of pyridinic and Mn-N/graphitic. 21 form. As far as the electrocatalytic performance is concerned, the onset and halfwave potentials for the pyrolysed material are shifted with respect to the values measured for the corresponding aselectrodeposited system, denoting considerably improved activity. In terms of the same electrocatalytic figures of merit, our electrocatalyst outperforms MnO x supported on a range of carbons, such as: C-powders, 127 vulcan, 31,128 and nanocarbon, 129 while mesoporous C-N supports 130 and appropriately nanostructured MnO 2 (nanospheres and nanowires, 131 microsphere/nanosheet core−corona hierarchical architectures, nanorods, and nanotubes 132 ) yield better ORR capabilities.

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“…To improve the quality of the coatings, it is necessary to add surfactants to the electrolyte, which show have a leveling action in indium electrodeposition. In [18][19][20][21], additions of quaternary ammonium salts were used to inhibit dendritic formation during electrodeposition of zinc, copper and silver; these additives showed a high leveling effect. Formation of compact coatings is possible when surfactants are added to the electrolyte.…”

Section: Introductionmentioning

confidence: 99%

Influence of tetrabutylammonium chloride on the electrodeposition of indium from chloride solution on a glassy carbon electrode

Avchukir

Burkitbayeva

Vacandio

et al. 2019

Journal of Electroanalytical Chemistry

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In this paper, the electrochemical reduction of indium on a glassy carbon electrode (GCE) in a chloride electrolyte in the presence of tetrabutylammonium chloride (TBACh) was studied using the rotating disk electrode method, chronoamperometry and scanning electron microscopy. It was found that the addition of TBACh inhibits the electroreduction of indium by increasing the activation energy of the process by 17 kJ mol-1 , and also shows leveling action at its low concentrations. The diffusion coefficient of indium (III) ions found from Levich equation at 25°C, was 4.93× 10-6 cm 2 s-1. The In 3+ diffusion coefficient determined using the Levich equation are consistent with the values determined by the Cottrell law and universal Stokes-Einstein equation. The addition of 10-4 M TBACh to the electrolyte reduces the diffusion coefficient to 2.13× 10-6 cm 2 s-1 .

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Silver electrodeposition from water–acetonitrile mixed solvents in the presence of tetrabutylammonium perchlorate

Cited by 8 publications

References 23 publications

Electrochemical SERS study on a copper electrode of the insoluble organic pigment quinacridone quinone using ionic liquids (BMIMCl and TBAN) as dispersing agents

Electrochemical SERS study on a copper electrode of the insoluble organic pigment quinacridone quinone using ionic liquids (BMIMCl and TBAN) as dispersing agents

Electrodeposition and pyrolysis of Mn/polypyrrole nanocomposites: a study based on soft X-ray absorption, fluorescence and photoelectron microspectroscopies

Influence of tetrabutylammonium chloride on the electrodeposition of indium from chloride solution on a glassy carbon electrode

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