Articles with "porous gold" as a keyword



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A Simple and Highly Stable Porous Gold‐based Electrochemical Sensor for Bisphenol A Detection

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Published in 2017 at "Electroanalysis"

DOI: 10.1002/elan.201600371

Abstract: A porous gold electrode with a uniform pore size was prepared by a simple single potential step method. It provided around 19 times more surface area than a bare gold electrode. The porous gold electrode,… read more here.

Keywords: detection; bisphenol; gold electrode; porous gold ... See more keywords
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Continuous tuning of the plasmon resonance frequency of porous gold nanoparticles by mixed oxide layers

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Published in 2020 at "Journal of Porous Materials"

DOI: 10.1007/s10934-020-00933-w

Abstract: Porous gold nanoparticles (PGNs) are very popular due to their high surface/volume ratio, moreover they have stronger plasmonic properties than their solid counterparts. These properties make the porous gold nanoparticles very useful for lots of… read more here.

Keywords: mixed oxide; gold nanoparticles; resonance frequency; oxide layers ... See more keywords
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Fabrication of novel compound SERS substrates composed of silver nanoparticles and porous gold nanoclusters: A study on enrichment detection of urea

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Published in 2018 at "Applied Surface Science"

DOI: 10.1016/j.apsusc.2017.08.230

Abstract: Abstract A new type of surface-enhanced Raman scattering (SERS) substrate was fabricated through the layer-by-layer self-assembly of silver nanoparticles (AgNPs, av. 45 nm in diameter) and porous gold nanoclusters/nanoparticles (AuNPs, av. 143 nm in diameter). The development… read more here.

Keywords: silver nanoparticles; detection; porous gold; gold nanoclusters ... See more keywords
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Rapid Electrochemical Fabrication of Porous Gold Nanoparticles for High-performance Electrocatalysis towards Oxygen Reduction

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Published in 2017 at "Electrochimica Acta"

DOI: 10.1016/j.electacta.2017.04.026

Abstract: Abstract Small-size Au nanoparticles (AuNPs) and nanoporous Au films (npAuFs) are two potential catalysts for electrocatalysis, electrochemical analysis and synthesis. However, the large contact resistance among AuNPs and the poor mass transfer within npAuFs significantly… read more here.

Keywords: electrochemical fabrication; towards oxygen; gold nanoparticles; porous gold ... See more keywords
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Design of catalytically active porous gold structures from a bottom-up method: The role of metal traces in CO oxidation and oxidative coupling of methanol

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Published in 2019 at "Journal of Catalysis"

DOI: 10.1016/j.jcat.2019.06.016

Abstract: Abstract By using a bottom-up approach, we prepared 3D self-supported porous structures made of gold nanoparticles and applied them as oxidation catalysts. To do so we used the established cryogelation technique, in which nanoparticle units… read more here.

Keywords: oxidation oxidative; methanol coupling; methanol; porous gold ... See more keywords
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Improved direct electron transfer-type bioelectrocatalysis of bilirubin oxidase using porous gold electrodes

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Published in 2019 at "Journal of Electroanalytical Chemistry"

DOI: 10.1016/j.jelechem.2019.05.007

Abstract: Abstract Porous gold (Au) electrodes prepared by anodization of Au electrodes in buffer solutions containing glucose were utilized as scaffolds for direct electron transfer (DET)-type bioelectrocatalysis of bilirubin oxidase (BOD). The three-dimensional porous structure appeared… read more here.

Keywords: gold electrodes; electron; type bioelectrocatalysis; porous gold ... See more keywords
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Highly Sensitive Membraneless Fructose Biosensor Based on Fructose Dehydrogenase Immobilized onto Aryl Thiol Modified Highly Porous Gold Electrode: Characterization and Application in Food Samples.

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Published in 2018 at "Analytical chemistry"

DOI: 10.1021/acs.analchem.8b03093

Abstract: In this paper we present a new method to electrodeposit highly porous gold (h-PG) onto a polycrystalline solid gold electrode without any template. The electrodeposition is carried out by first cycling the electrode potential between… read more here.

Keywords: gold electrode; surface; porous gold; gold ... See more keywords
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Hollow Porous Gold Nanoshells with Controlled Nanojunctions for Highly Tunable Plasmon Resonances and Intense Field Enhancements for Surface-Enhanced Raman Scattering.

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Published in 2019 at "ACS applied materials & interfaces"

DOI: 10.1021/acsami.9b16983

Abstract: Plasmonic metal nanostructures with nanogaps have attracted great interest owing to their controllable optical properties and intense electromagnetic fields that can be useful for a variety of applications, but precise and reliable control of nanogaps… read more here.

Keywords: surface enhanced; enhanced raman; porous gold; gold ... See more keywords
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Laser-induced fabrication of porous gold nanoshells.

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Published in 2018 at "Nanoscale"

DOI: 10.1039/c8nr04617d

Abstract: Pulse-laser irradiation is a promising approach to fabricate gold nanostructures with unique morphologies. Hollow and porous gold nanoshells with high surface-enhanced Raman scattering efficiency have been produced via irradiating SiO2@Au@SiO2 nanoparticles with nanosecond laser pulses;… read more here.

Keywords: induced fabrication; fabrication porous; porous gold; gold nanoshells ... See more keywords
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Morphological and in situ local refractive index change induced tuning of the optical properties of titania coated porous gold nanoparticles

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Published in 2020 at "Journal of Applied Physics"

DOI: 10.1063/5.0010460

Abstract: Porous nanoparticles are very popular because of their high surface/volume ratio; moreover, they have stronger plasmonic properties than their solid counterparts. Due to these properties, these are potential candidates in optical, or even in ophthalmological… read more here.

Keywords: gold nanoparticles; optical properties; porous gold; titania coated ... See more keywords
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Porous Gold: A New Frontier for Enzyme-Based Electrodes

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Published in 2020 at "Nanomaterials"

DOI: 10.3390/nano10040722

Abstract: Porous gold (PG) layers modified electrodes have emerged as valuable enzyme support to realize multiple enzyme-based bioelectrochemical devices like biosensors, enzymatic fuel cells (EFCs), smart drug delivery devices triggered by enzyme catalyzed reactions, etc. PG… read more here.

Keywords: based electrodes; enzyme based; porous gold; new frontier ... See more keywords