A novel nanoporous gold modified electrode for the selective determination of dopamine in the presence of ascorbic acid

Qiu, Hua‐Jun; Zhou, Guiping; Ji, Guanglei; Zhang, Yun; Huang, Xirong; Ding, Yi

doi:10.1016/j.colsurfb.2008.11.007

Cited by 89 publications

(59 citation statements)

References 18 publications

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“…Both dopamine and ascorbic acid showed strong electrochemical signals on nanoporous gold. Compared to planar gold, the electrochemical signal was ∼2.5x larger for ascorbic acid and ∼6x larger for dopamine [144]. This difference in enhancement likely reflects difference in the electrochemically accessible electrode areas available to each redox species.…”

Section: Small Molecule Sensingmentioning

confidence: 91%

“…The ability to use an electrode that has an electrochemically useful surface area that is 10-100 times larger than a traditional electrode thus offers much promise. Examples of small molecules that have been studied include dopamine [144], ascorbic acid [144], hydrogen peroxide [143,145], nitrite [146], cysteine [147], nitrophenol [148,149], hydrazine [150], and glucose [151].…”

Section: Small Molecule Sensingmentioning

confidence: 99%

“…The electrochemistry of dopamine and ascorbic acid has been studied at nanoporous gold electrodes [144]. In this study, the gold leaf was chemically dealloyed and captured on a glassy carbon electrode.…”

Section: Small Molecule Sensingmentioning

confidence: 99%

“…In the case of dopamine, it was also found to adsorb on the electrode surface. The determination of dopamine in the presence of ascorbic acid was undertaken using differential pulse voltammetry with a reported detection limit of 17 nM [144].…”

Section: Small Molecule Sensingmentioning

confidence: 99%

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Nanoporous Gold Electrodes and Their Applications in Analytical Chemistry

Collinson

2013

ISRN Analytical Chemistry

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Nanoporous gold prepared by dealloying Au:Ag alloys has recently become an attractive material in the field of analytical chemistry. This conductive material has an open, 3D porous framework consisting of nanosized pores and ligaments with surface areas that are 10s to 100s of times larger than planar gold of an equivalent geometric area. The high surface area coupled with an open pore network makes nanoporous gold an ideal support for the development of chemical sensors. Important attributes include conductivity, high surface area, ease of preparation and modification, tunable pore size, and a bicontinuous open pore network. In this paper, the fabrication, characterization, and applications of nanoporous gold in chemical sensing are reviewed specifically as they relate to the development of immunosensors, enzyme-based biosensors, DNA sensors, Raman sensors, and small molecule sensors.

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Section: Small Molecule Sensingmentioning

confidence: 91%

Section: Small Molecule Sensingmentioning

confidence: 99%

Section: Small Molecule Sensingmentioning

confidence: 99%

Section: Small Molecule Sensingmentioning

confidence: 99%

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Nanoporous Gold Electrodes and Their Applications in Analytical Chemistry

Collinson

2013

ISRN Analytical Chemistry

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“…A commercialized Ag-Au thin foil has been traditionally utilized to produce NPG surface layers, 3,4) which were supported on electrode surfaces such as glassy carbon for electroanalytical applications. 7,8) In an alternative route to fabricate NPG electrode surfaces, Ag-Au alloy layers are directly electrodeposited on electrode surfaces and then transferred to a concentrated nitric acid to dissolve Ag to produce NPG surfaces. 10) In addition to the apparent simplicity in the fabrication steps, this method offers an important advantage for electroanalytical applications because the fine control of surface structures of NPG is possible by changing various electrochemical parameters during the electrodeposition of Ag-Au layers.…”

Section: -9)mentioning

confidence: 99%

Electrocatalytic Reduction of Hydrogen Peroxide at Nanoporous Gold Surfaces

Park¹,

Kim²

2010

Journal of the Korean Electrochemical Society

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:We report on the electrocatalytic reduction of hydrogen peroxide at nanoporous gold (NPG) surfaces. Various NPG surfaces with different surface structure were prepared by changing the conditions of electrodeposition for Ag-Au layers such as the concentration ratios of KAu(CN) 2 over KAg(CN) 2 and deposition charges. The effects of different electrochemical conditions on the electrocatalysis of H 2 O 2 reduction were investigated. The NPG surfaces exhibited sensitive amperometric responses for H 2 O 2 reduction, from which calibration plots with higher sensitivity than a bare Au surface were obtained.

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Multifunctional Neural Interfaces for Closed‐Loop Control of Neural Activity

Chapman

Goshi

Şeker

2017

Adv Funct Materials

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Microfabrication and nanotechnology have significantly expanded the technological capabilities for monitoring and modulating neural activity with the goal of studying the nervous system and managing neurological disorders. This feature article initially provides a tutoriallike review of the prominent technologies for enabling this two-way communication with the nervous system via electrical, chemical, and optical means. Following this overview, the article discusses emerging high-throughput methods for identifying device attributes that enhance the functionality of interfaces. The discussion then extends into opportunities and challenges in integrating different device functions within a small footprint with the goal of closed-loop control of neural activity with high spatiotemporal resolution and reduced adverse tissue response. The article concludes with an outline of future directions in the development and applications of multifunctional neural interfaces.

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A novel nanoporous gold modified electrode for the selective determination of dopamine in the presence of ascorbic acid

Cited by 89 publications

References 18 publications

Nanoporous Gold Electrodes and Their Applications in Analytical Chemistry

Nanoporous Gold Electrodes and Their Applications in Analytical Chemistry

Electrocatalytic Reduction of Hydrogen Peroxide at Nanoporous Gold Surfaces

Multifunctional Neural Interfaces for Closed‐Loop Control of Neural Activity

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