Shape and size controlled fabrication of copper nanopowders from industrial electrolytes by pulse electrodeposition

Łukomska, Aneta; Plewka, Anna; Łoś, P.

doi:10.1016/j.jelechem.2009.09.029

Cited by 11 publications

(8 citation statements)

References 11 publications

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“…11,12 A lot of work has been published in discussing the synthesis, characterization and application of copper nanoparticles. [13][14][15] However, the reported synthetic methods based on reduction with hydrazine in ethylene glycol under microwave irradiation, 16 the seed-mediated growth, 17 the pulsed electrodeposition 18 and deposition on some specific substrates such as carbon nanotubes 19 and boron-doped diamond electrodes 20 are still complex and time-consuming.…”

Section: Introductionmentioning

confidence: 99%

Copper nano-clusters prepared by one-step electrodeposition and its application on nitrate sensing

Sun

Bian

et al. 2015

AIP Advances

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This paper describes the fabrication and characterization of copper nano-clusters prepared by a simple one-step electrodeposition process on platinum microelectrode, and the application for nitrate determination. The one-step electrodepostion process was performed by chronoamperometry scan in acidic copper sulphate electrolyte directly. The SEM and electrochemical examination showed that the morphologies and microstructures of deposited copper layers can be precisely controlled by using different deposition voltages. It was found that the copper layer is porous when the deposition voltage is higher than -500 mV, and this porous layer has a larger effective surface area compared with the corresponding smooth flat copper layer deposited under voltage less than -300 mV. Under the optimized deposition voltage, copper clusters constructed by uniform nanoparticles with an average diameter of about 100 nm can be obtained. The mechanism of electrodeposition process for this method was also speculated. The copper layers deposited under different voltages are used in a series of tests in order to evaluate their performance for nitrate sensing. The experimental results reveal that the microelectrode modified by fixed potential deposition under -700 mV had a higher sensitivity of 39.31 μA/mmolL−1 for nitrate detection within the concentration ranging from 0.1 mmolL−1 to 4.0 mmolL−1.

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Section: Introductionmentioning

confidence: 99%

Copper nano-clusters prepared by one-step electrodeposition and its application on nitrate sensing

Sun

Bian

et al. 2015

AIP Advances

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“…In our previous studies we used different UME materials such as gold, platinum and stainless steel [11]. In the present study we selected gold UME because it is characterized by the strongest interactions with deposited copper which leads e.g.…”

Section: Methodsmentioning

confidence: 99%

“…In our previous studies, a mechanism of copper electrocrystallization was studied using chronoamperometry and cyclic voltammetry on the ultramicroelectrodes in concentrated industrial and laboratory prepared electrolytes [7][8][9][10][11][12][13][14]. One of the key parameters of the industrial copper electrorefining process has been the concentration of the active animal glue in the electrolyte.…”

Section: Introductionmentioning

confidence: 99%

Impedance studies of copper electro-reduction on a disc-shaped ultramicroelectrode in industrial electrolytes

Gładysz

Łoś

2011

J Appl Electrochem

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The electrodeposition of copper from industrial sulphate electrolytes has been studied using electrochemical impedance spectroscopy on the gold disc ultramicroelectrode. The influence of dc potential E dc , temperature, cupric ions and animal glue concentration on electrochemical impedances has been investigated. The mechanism of the copper electro-reduction process in industrial electrolytes has been proposed and experimental impedance data have been analyzed by proper equivalent circuits. According to our knowledge the faradaic and non-faradaic impedance parameters of the process on ultramicroelectrode's have been estimated for the first time in complex matrix copper industrial electrolytes. The role of animal glue in copper industrial electrolytes has been discussed in the present paper.

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“…This was subject of a large number of publications and presentations at the conferences. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] Potential-controlled copper electrorefining and electrowinning processes have been studied subsequently by the same research group. Current publication is the first in a series where the results of pilot scale copper potential-controlled electrolysis investigations are discussed.…”

mentioning

confidence: 99%

“…18 The above limitation of the current density of current-controlled copper electrodeposition process is removed when the process is carried out under potential controlled regime. As it was shown in our previous studies [2][3][4][5][6][7][8][9][10][11][12][13][14] high quality and purity of copper deposits are obtained using potential-controlled electrolysis even at the potentials where limiting current density is achieved. In the current study a very rare results obtained in the industrial electrolytes are presented at the very high negative potentials which in turn leads to the very high cathode current densities of copper electroreduction.…”

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confidence: 99%

Laboratory and Pilot Scale Tests of a New Potential-Controlled Method of Copper Industrial Electrolysis

Łoś

Łukomska

Kowalska

et al. 2014

J. Electrochem. Soc.

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Copper electrorefining and electrowinning industrial processes are carried out on industrial scale as current-controlled processes practically from the beginning of the commercial exploitation. However, it is the electrode potential which is a driving force of electrochemical process. The copper electrodeposition from industrial electrolytes is in fact a very complex multi-ion process. Consequently, the theoretical analysis of the experimental results should take into account that in concentrated and complex matrix electrolytes migration, convection and diffusion are mass transfer modes. However, there is only very limited number of papers where copper electroreduction from concentrated electrolytes is considered and most of the published theoretical and experimental studies are carried out in diluted electrolytes of relatively simple compositions where only diffusion of copper ions is considered in theoretical analysis. In the present paper some basic aspects of potential-controlled electrolysis of copper in concentrated and industrial electrolytes as a new method of copper electrorefining and electrowinning are presented and discussed. The pilot scale tests results of copper potential-controlled electrolysis are published for the first time. Apart from the possible industrial applications, studies of the electrochemical processes in concentrated electrolytes are very important from the basic research point of view.

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Shape and size controlled fabrication of copper nanopowders from industrial electrolytes by pulse electrodeposition

Cited by 11 publications

References 11 publications

Copper nano-clusters prepared by one-step electrodeposition and its application on nitrate sensing

Copper nano-clusters prepared by one-step electrodeposition and its application on nitrate sensing

Impedance studies of copper electro-reduction on a disc-shaped ultramicroelectrode in industrial electrolytes

Laboratory and Pilot Scale Tests of a New Potential-Controlled Method of Copper Industrial Electrolysis

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