Kinetic behaviour of the system composed of nanosized gold particles and very-high-molecular-weight polyacrylamide

Nowicki, Waldemar

doi:10.1016/s0927-7757(01)00785-3

Cited by 16 publications

(16 citation statements)

References 49 publications

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“…The earlier [17,35,37,44,56] and present studies have shown that the gold sol obtained by the Turkevich method [46] used in this work contains gold nanoparticles of the average diameter of about 16 nm, as evaluated from the transmission electron microscopy image (TEM) (Fig. 1b).…”

Section: Resultssupporting

confidence: 52%

“…33 %) and C 2 H 5 OH (99.9 %) were purchased from POCh (Gliwice, Poland), whereas (±)dihydrolipoic acid (99.9 %), cysteamine (≥99 %), auric acid (HAuCl 4 ) (99.999 %), dopamine (99.9 %), ascorbic acid (99.9 %) and uric acid (99.9 %) were from Sigma-Aldrich. The gold colloidal solution (Au sol) was prepared according to the Turkevich procedure [46]: 1.5 cm 3 of 0.60 % HAuCl 4 was added to 100 cm 3 of water and heated until boiling. Then, 5 cm 3 of 1 % trisodium citrate was added to the boiling solution upon stirring.…”

Section: Reagentsmentioning

confidence: 99%

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New self-assembled layers composed with gold nanoparticles, cysteamine and dihydrolipoic acid deposited on bare gold template for highly sensitive and selective simultaneous sensing of dopamine in the presence of interfering ascorbic and uric acids

Łuczak

Osińska

2016

J Solid State Electrochem

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A gold bare template modified with self-assembled layers (SAMs) composed of gold nanoparticles and organic Scontaining compound: cysteamine and dihydrolipoic acid were prepared. The electrode with SAMs endowed with gold nanoparticles gave a high catalytic effect for dopamine electrooxidation alone and in the presence of biogenic interfering compounds: ascorbic acid and uric acid in solution at pH 7. For this novel sensor, a linear relationship between the current response of dopamine at the potential of peak maximum (j p ) and the concentration of this compound in solution (c DA ) was found over the range 0.1 μM to 0.85 mM with the detection limit of 0.023 μM.

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Section: Resultssupporting

confidence: 52%

Section: Reagentsmentioning

confidence: 99%

New self-assembled layers composed with gold nanoparticles, cysteamine and dihydrolipoic acid deposited on bare gold template for highly sensitive and selective simultaneous sensing of dopamine in the presence of interfering ascorbic and uric acids

Łuczak

Osińska

2016

J Solid State Electrochem

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“…The solutions were prepared prior to use from deionized water purified in a Millipore Milli-Q system. A monodispersed Au-colloidal solution was prepared according to procedure described elsewhere [22,23,24]. All solutions under investigation were deaerated by blowing highly pure argon before measurements.…”

Section: Reagentsmentioning

confidence: 99%

Electroanalysis of Norepinephrine at Bare Gold Electrode Pure and Modified with Gold Nanoparticles and S‐Functionalized Self‐Assembled Layers in Aqueous Solution. Part II

Łuczak¹

2010

Electroanalysis

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Gold electrodes modified with S-containing compounds and gold were used for determination of norepinephrine (NEP) in aqueous solution. A linear relationship between norepinephrine concentration and current response was obtained in the range of 0.1 mM to 600 mM with the detection limit 0.090 mM for the electrodes modified at 2D template and in the range of 0.1 mM to 700 mM with the detection limit 0.075 mM for the electrodes modified at 3D template. The results have shown that modified electrodes could clearly resolve the oxidation peaks of norepinephrine, ascorbic (AA) and uric acid (UA) with peak-to-peak separation enabling determination of NEP, AA and UA in the presence of each other.

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“…It is worth emphasizing that the gold sol obtained by the Turkevich method [38] used in the present studies contained gold nanoparticles (Au-NPs) of the average diameter of about 15 nm, as evaluated from the TEM, Fig. 1.…”

Section: Modification Of the Gold Electrode Surfacementioning

confidence: 89%

“…As a supporting electrolyte solution, the phosphate buffer 0.06 M, pH 7, was used. Au-colloidal solution (Au-sol) was prepared according to the Turkevich procedure [38]. The Au-sol was stored in a dark glass at 4°C.…”

Section: Experimental Reagentsmentioning

confidence: 99%

Effect of Gold Modification with 3-Mercaptopropionic Acid, Cysteamine and Gold Nanoparticles on Monoethanolamine Electrooxidation

2015

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In this work, a gold electrode modified with selfassembled layers (SAMs) composed of 3-mercaptopropionic acid, cysteamine and gold nanoparticles was prepared. The electrode with SAMs endowed with gold nanoparticles gave the high catalytic effect for monoethanolamine (MEA) electrooxidation in solution at pH 7. For this novel sensor, a linear relationship between the current response of MEA at the potential of peak maximum (j p ) and the concentration of this compound in solution (c MEA ) was found, over the range 0.1 μM to 0.8 M with the detection sensitivity equal to about 5 A cm −2 mol −1 dm 3 (at v=0.1 V s −1 ) and the detection limit of 0.046 μM.

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Kinetic behaviour of the system composed of nanosized gold particles and very-high-molecular-weight polyacrylamide

Cited by 16 publications

References 49 publications

New self-assembled layers composed with gold nanoparticles, cysteamine and dihydrolipoic acid deposited on bare gold template for highly sensitive and selective simultaneous sensing of dopamine in the presence of interfering ascorbic and uric acids

New self-assembled layers composed with gold nanoparticles, cysteamine and dihydrolipoic acid deposited on bare gold template for highly sensitive and selective simultaneous sensing of dopamine in the presence of interfering ascorbic and uric acids

Electroanalysis of Norepinephrine at Bare Gold Electrode Pure and Modified with Gold Nanoparticles and S‐Functionalized Self‐Assembled Layers in Aqueous Solution. Part II

Effect of Gold Modification with 3-Mercaptopropionic Acid, Cysteamine and Gold Nanoparticles on Monoethanolamine Electrooxidation

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