Enhancement of the Electrocatalytic Activity of Gold Nanoparticles via Anodic Treatment and the Decrease of the Enhanced Activity with Aging

Jo, Kyungmin; Kang, Hee-Sook; Yang, Haesik

doi:10.5012/bkcs.2011.32.2.728

Bulletin of the Korean Chemical Society

2011

DOI: 10.5012/bkcs.2011.32.2.728

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Enhancement of the Electrocatalytic Activity of Gold Nanoparticles via Anodic Treatment and the Decrease of the Enhanced Activity with Aging

Kyungmin Jo¹,

Hee-Sook Kang²,

Haesik Yang

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Cited by 5 publications

(2 citation statements)

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“…The electrochemical currents for formic acid electrooxidation decreased significantly after ultrasonic treatment. 4,8 These two additional experiments clearly confirmed that the decrease is not unique to a redox reaction of a p-benzoquinone/p-hydroquinone couple at mechanically polished Au electrodes.…”

mentioning

confidence: 65%

Facile decrease in the electron-transfer rate and surface roughness of gold by ultrasonic treatment

Dutta

Kim

et al. 2012

Chem. Commun.

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mentioning

confidence: 65%

Facile decrease in the electron-transfer rate and surface roughness of gold by ultrasonic treatment

Dutta

Kim

et al. 2012

Chem. Commun.

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“…[11][12][13] After the deposition, the ligands can be removed by calcinations of the material and thiolate oxidation and rinse with solvents.…”

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confidence: 99%

Physical Properties of Mercaptopyruvic-acid Layer Formed on Gold Surfaces

Park

2011

Bulletin of the Korean Chemical Society

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We studied the physical properties of the mercaptopyruvic-acid layer formed on gold surfaces, which has the interactions with the titanium dioxide surface for design of gold-titanium dioxide distribution. Surface force measurements were performed, using the atomic force microscope (AFM), between the surfaces as a function of the salt concentration and pH value. The forces were analyzed with the DLVO (Derjaguin-Landau-VerweyOverbeek) theory, to evaluate the potential and charge density of the surfaces quantitatively for each salt concentration and each pH value. The difference in the properties reflected the effect of the isoelectric point on the surface forces. The forces were interpreted for the evaluation with the law of mass action and the ionizable groups on the surface. The salt concentration dependence of the surface properties, found from the measurement at pH 8.0, was consistent with the prediction from the law. It was found that the mercaptopyruvicacid layer had higher values for the surface charge densities and potentials than the titanium dioxide surfaces at pH 8, which may be attributed to the ionized-functional-groups of the mercaptopyruvic-acid layer.

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Effect of Fenton's reagent on the electrocatalytic activity of gold nanoparticles

Dutta

Yang

2011

Electrochemistry Communications

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Enhancement of the Electrocatalytic Activity of Gold Nanoparticles via Anodic Treatment and the Decrease of the Enhanced Activity with Aging

Cited by 5 publications

References 15 publications

Facile decrease in the electron-transfer rate and surface roughness of gold by ultrasonic treatment

Facile decrease in the electron-transfer rate and surface roughness of gold by ultrasonic treatment

Physical Properties of Mercaptopyruvic-acid Layer Formed on Gold Surfaces

Effect of Fenton's reagent on the electrocatalytic activity of gold nanoparticles

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