Double-pulse technique as an electrochemical tool for controlling the preparation of metallic nanoparticles

Ueda, Mikito; Dietz, H.; Anders, A.; Kneppe, H.; Meixner, Alfred J.; Plieth, W.

doi:10.1016/s0013-4686(02)00683-7

Cited by 147 publications

(141 citation statements)

References 17 publications

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“…A definite influence of increasing growth time on structure of silver nanoparticles is shown in Figure 2c, which led to increase in particle size and nanoparticle aggregation. These conclusions are in agreement with former results [33,40].…”

Section: Electrodeposition Of Silver Nanoparticles On Cilesupporting

confidence: 94%

“…The time interval of the pre-pulse is short relative to the duration of silver particle growth and nucleation occurs instantaneously. In order to have monodispersity in size and density of nanoparticles, the cathodic overvoltage for the second pulse should be chosen high enough to control particle growth but low enough to minimize the generation of new nuclei [40,53]. A definite influence of increasing growth time on structure of silver nanoparticles is shown in Figure 2c, which led to increase in particle size and nanoparticle aggregation.…”

Section: Electrodeposition Of Silver Nanoparticles On Cilementioning

confidence: 99%

“…In order to decrease dispersion in particle size during electrodeposition process, the crystal seed formation has to occur spontaneously; thus preventing progressive nucleation and also, the crystal growth has to be conducted at a slow rate, i.e. at low overvoltage [48].…”

Section: Introductionmentioning

confidence: 99%

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Electrodeposited Silver Nanoparticles on Carbon Ionic Liquid Electrode for Electrocatalytic Sensing of Hydrogen Peroxide

2009

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Silver nanoparticles (narrowly dispersed in diameter) were electrodeposited on carbon ionic liquid electrode (CILE) surface using a two-step potentiostatic method. Potentiostatic double pulse technique was used as a suitable and simple method for controlling the size and morphologies of silver nanoparticles electrodeposited on CILE. The obtained silver nanoparticles deposited on CILE surface showed excellent electrocatalytic activity (low overpotential of À 0.35 V vs. Ag/AgCl) towards reduction of hydrogen peroxide. A linear dynamic range of 2 -200 mM with an experimental detection limit of 0.7 mM (S/N ¼ 3) and reproducibility of 4.1% (n ¼ 5) make the constructed sensor suitable for peroxide determination in aqueous solutions.

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Section: Electrodeposition Of Silver Nanoparticles On Cilesupporting

confidence: 94%

Section: Electrodeposition Of Silver Nanoparticles On Cilementioning

confidence: 99%

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Electrodeposited Silver Nanoparticles on Carbon Ionic Liquid Electrode for Electrocatalytic Sensing of Hydrogen Peroxide

2009

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“…On the other hand, electrochemical deposition is an efficient method to prepare metal particles. It is widely used employing different strategies/methodologies, such as cyclic voltammetry [10,11], potential step deposition [12,13,14,15] and double-pulse [16,17,18]. Among these, potential step deposition (PSD) provides us a tool to control the amount of metal that is deposited, the number of metallic sites and their size to a fairly small scale.…”

Section: -Introductionmentioning

confidence: 99%

Electrochemical deposition of platinum nanoparticles on different carbon supports and conducting polymers

et al. 2007

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Electrodeposition of Pt nanoparticles under potentiostatic conditions was performed on several types of carbon electrode supports: a commercial macroporous carbon (which can be considered as a three-dimensional electrode), glassy carbon, graphite and conducting polymers (polyaniline and poly-o-aminophenol). The platinum nanoparticles were obtained by different Potential Step Deposition (PSD) methods in 5 mM H 2 PtCl 6 + 0.5 M H 2 SO 4 aqueous solutions. The effect of the final potential, time and number of steps on the quantity, distribution and size of the platinum nanoparticles deposited on the supports was analysed. The mechanism of the electrochemical deposition of platinum was studied by applying theoretical models found in the literature, being the progressive nucleation mechanism the most consistent with our results. In addition, the chemical state and morphology of the electrodeposited materials The prepared composites have been tested for the electro-oxidation of methanol. 2.-EXPERIMENTAL Preparation of the supportsDifferent carbon materials have been used to prepare the working electrodes for the platinum electrodeposition: macroporous carbon disc, glassy carbon and graphite.The macroporous carbon discs, which were cut from a macroporous carbon sheet (thickness = 0.3 mm, mean pore size 0.7 µm, exposed geometric area 2.91 cm 2 )provided by Poco Graphite (DFP-1) were washed in an ultrasonic bath with distilled water at room temperature for 30 minutes. The graphite (Ellor+35) and glassy carbon (CV25) were rods of 0.3 cm in diameter from Carbone Lorraine.In all cases, the materials were first treated with sandpaper, and were then polished with two different diamond suspensions (particle sizes 1 and 0.25 µm, respectively), and finally washed in an ultrasonic bath with ultrapure water for 5 minutes.The conducting polymers layers were electrochemically deposited on glassy carbon by cyclic voltammetry between 0.06 and 1.10V from a 0.1 M aniline or o -5 aminofenol in a supporting electrolyte of 0.5 M H 2 SO 4 at a scan rate of 50 mV s -1 .Although different expressions can be found for film thickness determination in literature, an EQCM experiment [27] was used to calculate film thickness from polymer peak voltammetric charge. Platinum electrodepositionThe electrodeposition of platinum particles on the different electrodes was performed in a conventional electrochemical cell of three electrodes at room temperature. All the reagents used were of analytical grade, and these and other materials were used without f urther purification. An EG&G potentiostat/galvanostat model 263A controlled by the program POWER SUITE was employed, so the values of current and time were monitored by a computer. For all the experiments the counterelectrode was a platinum wire. The reference electrode was a reversible hydrogen electrode (RHE), immersed in 0.5M H 2 SO 4 solution, which was connected to the working electrode compartment by a Luggin capillary.All solutions were prepared with high-purity water (resistivity =18 MΩ·...

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“…Finally, the separator accommodates the mechanical constraints of the pressure applied to the stack that otherwise would lead to the destruction of the brittle AAO membrane. Electrodeposition of Cu was carried out under a pulsed cathodic current, a technique applied for many years to the plating of metals or alloys 28 to avoid diffusion-limited deposition. We used a repeated sequence of 300 ms consisting of two steps.…”

mentioning

confidence: 99%

High rate capabilities Fe3O4-based Cu nano-architectured electrodes for lithium-ion battery applications

et al. 2006

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Double-pulse technique as an electrochemical tool for controlling the preparation of metallic nanoparticles

Cited by 147 publications

References 17 publications

Electrodeposited Silver Nanoparticles on Carbon Ionic Liquid Electrode for Electrocatalytic Sensing of Hydrogen Peroxide

Electrodeposited Silver Nanoparticles on Carbon Ionic Liquid Electrode for Electrocatalytic Sensing of Hydrogen Peroxide

Electrochemical deposition of platinum nanoparticles on different carbon supports and conducting polymers

High rate capabilities Fe3O4-based Cu nano-architectured electrodes for lithium-ion battery applications

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