Direct growth of nanoporous Au and its application in electrochemical biosensing

Kafi, A.K.M.; Ahmadalinezhad, Asieh; Wang, Jingpeng; Thomas, Dan F.; Chen, Aicheng

doi:10.1016/j.bios.2010.04.006

Cited by 81 publications

(29 citation statements)

References 43 publications

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“…as a nonenzymatic sensor to detect glucose with a reported detection limit of 14.8 M [181], glucose-oxidase-based sensor to detect glucose with a reported detection limit of 2.5 M [180], horseradish-peroxidase-immobilized sensor to detect hydrogen peroxide (detection limit of 2 × 10 −8 M) [182], and in the detection of cholesterol [174]. A roughness factor of 5.9 [174] and 19 [181] has been reported.…”

Section: Other Nanoporous Gold Sensorsmentioning

confidence: 99%

“…In this method, a fairly high concentration of HAuCl 4 was mixed with a reducing agent (e.g., ammonium formate, formaldehyde, and polyethylene glycol) and heated in an autoclave at 180 ∘ C for 8-10 hr. The Au-coated substrates were then annealed at 200-250 ∘ C under argon for several hours [174,[180][181][182]. The structure of these materials is a bit different than those formed by dealloying consisting of an aggregate network of gold nanoparticles that range in size of 50-500 nm forming pores/openings that are 10s to 100s of nanometers in size.…”

Section: Other Nanoporous Gold Sensorsmentioning

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: Other Nanoporous Gold Sensorsmentioning

confidence: 99%

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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“…Depending on structural and morphological characteristics porous structures and nanoparticles systems have great potential for application as catalysts [1][2][3][4][5], sensors [6][7][8][9][10], electrodes in electrochemical batteries [11][12][13][14], solar cells [15], fuel cells [16] and other active elements. Different methods are used with the purpose to form nanoparticles systems with uniform size and shape.…”

Section: Introductionmentioning

confidence: 99%

Formation of copper porous structures under near-equilibrium chemical vapor deposition

Kornyushchenko

Natalich

Perekrestov

2016

Journal of Crystal Growth

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a b s t r a c tThe mechanism of copper structure formation under near-equilibrium conditions in a chemically-active medium-condensate system has been investigated. The desired conditions have been implemented using CVD system. Copper chloride CuCl 2 was used as a source material, and mixture of hydrogen with nitrogen served as a working gas. The influence of the evaporation temperature, condensation temperature and state of the growth surface on the porous structures formation has been investigated. It has been established, that the structure formation mechanism is determined by layer-by-layer or normal crystal growth, nucleation and growth of whiskers, and also by partial intergrowth of structural elements.

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“…Detection of H 2 O 2 is a significant challenge for applications of healthcare, food science, pharmaceutical science, and environmental monitoring [116]. Recently, metal nanomaterials, including Ag, Au, Pt, and Pd nanoparticles, have been studied as alternative electrochemical catalysts for nonenzymatic hydrogen peroxide sensors [62,[117][118][119][120]. However, rapid response and sensitive methods are required for practical applications.…”

Section: Enzymatic Biosensorsmentioning

confidence: 99%

Development of Biosensors from Polymer Graphene Composites

Dey

2015

Graphene-Based Polymer Nanocomposites in Electronics

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Graphene has been considered as excellent two dimensional support in recent-times for next-generation graphene-polymer composites towards the development of biosensors. The remarkable properties of polymer and graphene with respect to electrical, mechanical, optical and structural aspect offers an ideal composite support for the development of biosensor. The frontiers of this composites technology is by combining of the polymer and graphene through synergy to achieve the goal of enhanced performance of biosensors with good efficiency and cost effectiveness. Graphene combined with polymer enhances the performance of biosensors in terms of sensitivity, selectivity, response time, and multiplexing capability of biosensors for clinical diagnostics. In this chapter, various methods have been provided to produce the polymer-based graphene composite materials and also discussed the importance of the composite materials to the development of biosensors for clinically important analytes, DNAs, aptamers and immunosensors.

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Direct growth of nanoporous Au and its application in electrochemical biosensing

Cited by 81 publications

References 43 publications

Nanoporous Gold Electrodes and Their Applications in Analytical Chemistry

Nanoporous Gold Electrodes and Their Applications in Analytical Chemistry

Formation of copper porous structures under near-equilibrium chemical vapor deposition

Development of Biosensors from Polymer Graphene Composites

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