An in-situ electrochemical quartz crystal microbalance study of the underpotential deposition of copper on Au(111) electrodes

Borges, Gary L.; Kanazawa, K. Keiji; Gordon, Judith R.; Ashley, Kevin; Richer, Jocelyn

doi:10.1016/0022-0728(93)03169-p

Cited by 101 publications

(58 citation statements)

References 20 publications

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“…Further, consistent results have been obtained by STM [9,45,52,53]. Corroborating evidence was also obtained in an in situ electrochemical QCM study [47]. At the left-hand peak (Peak #2) and for still more negative potentials, the Cu coverage approaches 1 ML, and EXAFS results have suggested that sulfate adsorbs on top of the Cu atoms when a monolayer of Cu has been deposited on the Au(111) surface [56].…”

Section: −supporting

confidence: 66%

“…Rather, we believe that the large charge transfers observed in Refs. [45,47] were due to unexpectedly large roughness of the electrodes.…”

Section: −mentioning

confidence: 99%

“…The UPD of Cu on Au(111) in sulfate-containing electrolytes has been extensively studied, both by in situ techniques like CV [7,8,10,11,[45][46][47][48][49][50][51], chronocoulometry [45][46][47][48][49][50][51], scanning tunneling microscopy (STM) [9,45,52,53], atomic-force microscopy (AFM) [54], Fourier-transform infrared spectroscopy (FTIR) [55], X-ray-absorption spectroscopy (EX-AFS and XANES) [56][57][58], surface X-ray scattering [59,60], quartz crystal microbalance (QCM) [47,59], and by ex situ techniques, such as LEED, RHEED (reflection high-energy electron diffraction) and AES [10,11,[61][62][63]. Electrolyte compositions used in several CV experiments (including the present work) are listed in Table I, together with potential scan rates and observed current-peak separations.…”

Section: Survey Of the Experimental Situationmentioning

confidence: 99%

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Underpotential deposition of Cu on Au(111) in sulfate-containing electrolytes: A theoretical and experimental study

Zhang

Sung

Rikvold

et al. 1996

The Journal of Chemical Physics

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We study the underpotential deposition of Cu on single-crystal Au(111) electrodes in sulfate-containing electrolytes by a combination of computational statistical-mechanics based lattice-gas modeling and experiments. The experimental methods are in situ cyclic voltammetry and coulometry and ex situ Auger electron spectroscopy and low-energy electron diffraction. The experimentally obtained voltammetric current and charge densities and adsorbate coverages are compared with the predictions of a two-component lattice-gas

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Section: −supporting

confidence: 66%

“…Rather, we believe that the large charge transfers observed in Refs. [45,47] were due to unexpectedly large roughness of the electrodes.…”

Section: −mentioning

confidence: 99%

Section: Survey Of the Experimental Situationmentioning

confidence: 99%

See 1 more Smart Citation

Underpotential deposition of Cu on Au(111) in sulfate-containing electrolytes: A theoretical and experimental study

Zhang

Sung

Rikvold

et al. 1996

The Journal of Chemical Physics

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“…Frequency change to mass conversion was conducted assuming the applicability of the Sauerbrey equation [18] and a conversion factor of 0.0557 Hz/ng/cm 2 . This conversion factor was determined by the standard Cu deposition and stripping method [19,20].…”

Section: Electrochemical Quartz Crystal Microbalance (Eqcm) Studies Omentioning

confidence: 99%

The effect of acetohydroxamic acid on stainless steel corrosion in nitric acid

Wilbraham

Boxall

2016

Electrochemistry Communications

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We present the first study of the effect of acetohydroxamic acid (AHA) on the corrosion behaviour of stainless steels. Particularly, studies have been performed using steels and physicochemical conditions equivalent to those proposed for use in advanced nuclear reprocessing platforms. In these, AHA has been shown to have little effect on either steel passivation or reductive dissolution of both SS304L and SS316L. However, under transpassive dissolution conditions, AHA while in part electrochemically oxidised to acetic acid and nitroxyl/hydroxylamine, also complexes with Fe 3+ , inhibiting secondary passivation and driving transpassive dissolution of both steels.

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“…The techniques that have been employed include scanning tunneling and atomic force microscopy, [2][3][4] X-ray diffraction, 5,6 X-ray absorption spectroscopy, 7,8 electrochemical quartz crystal microbalance [9][10][11][12] amongst others. The great importance of metal deposition processes has made UPD the subject of several review papers.…”

Section: Introductionmentioning

confidence: 99%

A microgravimetric study of simultaneous adsorption of anions and copper on polycrystalline Pt surfaces

Miwa¹,

Santos²,

Machado³

2006

J. Braz. Chem. Soc.

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A deposição em subtensão de Cu foi estudada em quatro diferentes eletrólitos ácidos, por meio de medidas simultâneas de voltametria cíclica e microgravimetria, usando uma microbalança eletroquímica de cristal de quartzo. A influência dos ânions na formação da monocamada de Cu foi determinada. Entre os três picos de dessorção observados, encontrou-se que o primeiro é muito sensível à natureza do anion presente em solução. Este comportamento foi relacionado com o baixo recobrimento da superfície da Pt com os ad-átomos, na faixa de potenciais correspondente, que resulta apenas em interações muito fracas entre os ad-átomos de Cu. A monocamada é composta de uma primeira camada de Cu adsorvido sobre Pt e uma segunda camada de ânions adsorvidos sobre os ad-átomos de Cu, com cada ânion ocupando dois ad-átomos adjacentes, com exceção do Cl -, que se depositou na forma de um ânion para cada ad-átomo de Cu. Esta estrutura forma, conseqüentemente, uma bi-camada. A modificação dos perfis dos massogramas e voltamogramas pelo acréscimo do Cl -no eletrólito de perclorato também foi analisada.The underpotential deposition of Cu was studied in four different acid electrolytes by simultaneous measurements of cyclic voltammetry and microgravimetry using a electrochemical quartz crystal microbalance. The influence of anions on the Cu monolayer was determined. Among the three desorption peaks observed, the first was found to be very sensitive to the nature of the anion present in solution. This was related to the low coverage of the Pt surface by ad-atoms, in the respective potential range, which yields a weak interaction between the Cu adatoms. The monolayer is composed of a first layer of Cu adsorbed on Pt and a second layer of anions adsorbed on the Cu ad-atoms, with each anion occupying two adjacent Cu atoms, with the exception of the Cl -anion which was deposited on only one Cu ad-atom. This structure consequently forms a bi-layer deposit. The modification of voltammetric and massogram profiles by adding Cl -to the perchlorate electrolyte was also analyzed.

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An in-situ electrochemical quartz crystal microbalance study of the underpotential deposition of copper on Au(111) electrodes

Cited by 101 publications

References 20 publications

Underpotential deposition of Cu on Au(111) in sulfate-containing electrolytes: A theoretical and experimental study

Underpotential deposition of Cu on Au(111) in sulfate-containing electrolytes: A theoretical and experimental study

The effect of acetohydroxamic acid on stainless steel corrosion in nitric acid

A microgravimetric study of simultaneous adsorption of anions and copper on polycrystalline Pt surfaces

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