Facile fabrication of nanoporous gold film electrodes

Deng, Yanping; Huang, Wei; Chen, Xin; Li, Zelin

doi:10.1016/j.elecom.2008.03.003

Cited by 104 publications

(98 citation statements)

References 21 publications

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“…A simple way to make a nanoporous gold-like structure is to just roughen/etch a planar gold electrode using a repetitive square-wave oxidation reduction cycle and/or via application of large potentials for a given period of time [24,157,[164][165][166][167][168][169][170][171][172]. One example of an electrode made via an anodizing procedure had an area 9.9 times greater than planar gold and was used to make a DNA sensor for detection of the PML/RAR fusion gene [165].…”

Section: Other Nanoporous Gold Sensorsmentioning

confidence: 99%

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: Other Nanoporous Gold Sensorsmentioning

confidence: 99%

Nanoporous Gold Electrodes and Their Applications in Analytical Chemistry

Collinson

2013

ISRN Analytical Chemistry

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“…27,28 Hence, it is really a challenging task to develop convenient and green methods to fabricate NPGF with high surface area. Gold surfaces with such features have been produced by square wave potential perturbations, 29 anodization in oxalate solution, 30 anodization of gold in HCl medium, 31 dealloying of silver/gold alloys, 32 anodization using ascorbic acid as reducing agents 33 and electroless deposition of iridium oxide nanoparticles on an anodized gold surface. 34 Also, gold nanomaterials have been found to be catalytically active and relatively stable in acid medium.…”

Section: Introductionmentioning

confidence: 99%

Nanoporous Gold Surface: An Efficient Platform for Hydrogen Evolution Reaction at Very Low Overpotential

Sukeri

Bertotti

2017

J. Braz. Chem. Soc.

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“…36 We have recently investigated borohydride oxidation reaction at NPG electrodes. The onset potential for borohydride oxidation at NPG in a wire array format shifted to more negative potentials than that observed at a Au disc and higher currents were realized.…”

Section: Introductionmentioning

confidence: 99%

Nanoporous Gold Catalyst for Direct Ammonia Borane Fuel Cells

Nagle

Rohan

2011

J. Electrochem. Soc.

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Nanoporous gold (NPG) electrodes were fabricated in film and wire array formats by selectively dealloying Ag from Au0.18Ag0.82. The ammonia borane (AB) oxidation reaction was studied by cyclic voltammetry at the NPG electrodes. The onset potential for the oxidation at NPG in a wire array format shifted to more negative potentials than that observed at a Au disc and higher currents were realised. An onset potential of −1.30 V vs. SCE was recorded which is 0.28 V lower than that at a Au disc. The oxidation current for 20 mM AB in 1 M NaOH increased from 2.65 mA cm−2 at a Au disc to 13.1 mA cm−2 at a NPG wire array. NPG is a viable candidate as an anode catalyst for a direct ammonia borane fuel cell.

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Facile fabrication of nanoporous gold film electrodes

Cited by 104 publications

References 21 publications

Nanoporous Gold Electrodes and Their Applications in Analytical Chemistry

Nanoporous Gold Electrodes and Their Applications in Analytical Chemistry

Nanoporous Gold Surface: An Efficient Platform for Hydrogen Evolution Reaction at Very Low Overpotential

Nanoporous Gold Catalyst for Direct Ammonia Borane Fuel Cells

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