Direct Electrodeposition of Gold Nanoparticles onto Indium Tin Oxide Film Coated Glass: Application to the Detection of Arsenic(III)

Xuan, Dong; Compton, Richard G.

doi:10.2116/analsci.22.567

Cited by 174 publications

(103 citation statements)

References 29 publications

(25 reference statements)

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“…In comparison with other nanostructured electrodes, DL at our NEEs compares or is even slightly lower than previous achievements [11][12][13][14][15].…”

Section: Topical Clustercontrasting

confidence: 67%

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Electroanalysis of Trace Inorganic Arsenic with Gold Nanoelectrode Ensembles

Mardegan¹,

Scopece²,

Lamberti³

et al. 2012

Electroanalysis

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The results of a study on the determination of trace levels of arsenic with nanoelectrode ensembles (NEEs) are reported. In order to lower the detection limit and to increase the number of performable analysis for each NEE, the right choice of the supporting electrolyte concentration and electroanalytical parameters were optimized. The electrochemical behavior of As(III) at NEEs was studied at first by cyclic voltammetry, while trace concentrations of As(III) were determined by anodic stripping square wave voltammetry. The method is characterized by a detection limit as low as 5 ng/L (65 pM) after 3 min preconcentration at À0.4 V. Finally, NEEs were applied to trace As analysis in real samples such as certified seawater samples.

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“…In comparison with other nanostructured electrodes, DL at our NEEs compares or is even slightly lower than previous achievements [11][12][13][14][15].…”

Section: Topical Clustercontrasting

confidence: 67%

“…In particular, several papers described the successful use of carbon electrodes modified with gold nanoparticles (AuNps) for trace arsenic analysis. The Au-Nps can be deposited by mean of electroless [13] or electrochemical methods [14,15]. The so prepared modified electrodes showed detection limit (DL) of 0.01 mg L À1 [11].…”

Section: Armentioning

confidence: 99%

Electroanalysis of Trace Inorganic Arsenic with Gold Nanoelectrode Ensembles

Mardegan¹,

Scopece²,

Lamberti³

et al. 2012

Electroanalysis

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“…Indeed, carbon is a commonly-used solid electrode material due to its wide potential window, mechanical stability, low cost and applicability to a wide range of redox systems. Carbon's chemical inertness and stability in acidic and basic media make it an attractive material for the deposition of metal thin films, such as mercury [3], gold [4] and, more recently, bismuth, antimony [5,6], metal nanoparticles [7,8] and polymers [9,10], employed for electroanalysis. Microfabrication of low-cost and disposable electrodes has received attention recently due to the development of electrochemical sensors, such as the thick-film screen-printed carbon electrodes prepared using commercially available carbon inks.…”

Section: Introductionmentioning

confidence: 99%

Pyrolyzed Photoresist Carbon Electrodes for Trace Electroanalysis of Nickel(II)

et al. 2015

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Novel pyrolyzed photoresist carbon electrodes for electroanalytical applications have been produced by photolithographic technology followed by pyrolysis of the photoresist. A study of the determination of Ni(II) dimethylglyoximate (Ni-DMG) through adsorptive cathodic stripping voltammetry at an in situ bismuth-modified pyrolyzed photoresist electrode (Bi-PPCE) is reported. The experimental conditions for the deposition of a bismuth film on the PPCE were optimized. The Bi-PPCE allowed the analysis of trace concentrations of Ni(II), even in the presence of Co(II), which is the main interference in this analysis, with cathodic stripping square wave voltammograms characterized by well-separated stripping peaks. The calculated limits of detection (LOD) were 20 ng•L −1 for Ni(II) alone and 500 ng•L −1 in the presence of Co(II). The optimized method was finally applied to the analysis of certified spring water (NIST1640a).

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“…The surface area calculation used a reported value of 400 µC/cm 2 . 12,18 The calculated values of the Au surface areas on the Au DENs-assembled and Au DENsphysisorbed ITO electrodes were 9.76 × 10 -3 cm 2 and 1.85 × 10 -3 cm 2 , respectively. The larger value (about 5 times) of the Au surface area on the Au DENs-assembled ITO compared to one of the Au DENs-physisorbed ITO electrode is consistent with the results of the above silver enhancement experiments.…”

mentioning

confidence: 96%

“…9 Based on those tunable properties of Au NPs, various strategies for the modification of ITO surface with Au NPs have been suggested. [10][11][12][13][14] However, assembling Au NPs in nanostructured thin films with precise controls in size and shape of Au NPs still remains a challenge.…”

mentioning

confidence: 99%