Effects of Pt decoration on the electrocatalytic activity of nanoporous gold electrode toward glucose and its potential application for constructing a nonenzymatic glucose sensor

Qiu, Hua‐Jun; Huang, Xirong

doi:10.1016/j.jelechem.2010.03.011

Cited by 102 publications

(48 citation statements)

References 38 publications

(58 reference statements)

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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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“…In recent years, IR spectrometry has been used to examine the adsorption and oxidation of glucose at Pt electrodes. Bae and coworkers [8,9] used Fourier transform IR spectroscopy to demonstrate for the first time that the main absorbed intermediate in glucose oxidation in both acidic and alkaline solutions is CO, similar to the oxidation of small organic molecules such as CH 3 OH, HCOOH, and HCHO. Studies of Pt single-crystal electrodes have shown that this reaction strongly depends on the crystallographic orientation of the electrode surface [10].…”

Section: Introductionmentioning

confidence: 99%

Kinetic studies of glucose electrocatalytic oxidation on GC/Ni electrode

Danaee

Jafarian

Forouzandeh

et al. 2012

Int J of Chemical Kinetics

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Nickel-modified glassy carbon electrode (GC/Ni) prepared by galvanostatic deposition was used for the electrocatalytic oxidation of glucose in alkaline solutions where different electrochemical methods were employed. In cyclic voltammetry studies, in the presence of glucose an increase in the peak current of the oxidation of nickel hydroxide is followed by a decrease in the corresponding cathodic current. This suggests that the oxidation of glucose is being catalyzed through mediated electron transfer across the nickel hydroxide layer comprising nickel ions of various valence states. Under the chronoamperometric regime, the reaction followed a Cottrellian behavior and the diffusion coefficient of glucose was found to be 8 × 10 −6 cm 2 s −1 . A mechanism based on the electrochemical generation of Ni 3+ -active sites and their subsequent consumptions by glucose has been discussed, and kinetic parameters have been derived. The heterogeneous rate constants for the oxidation of glucose at the surface of modified electrodes were determined by rotating disk electrode using the Koutecky-Levich plots, which are in agreement with the data obtained by chronoamperometry. C 2012 Wiley Periodicals, Inc. Int J Chem

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“…Recently, one-step methods have been developed for the preparation of NPG used for electrochemical glucose oxidation. 9,19 Although their surface morphologies are not like those of NPG prepared using the alloyingdealloying method, they work well. Almost at the same time, another one-step method was developed for forming NPG from oxalic acid.…”

Section: Introductionmentioning

confidence: 99%

“…However, the catalytic component of Au electrode is believed to be hydrous gold oxide AuOH. [7][8][9] Recently, an alternative view of Au surface suggests that the electrocatalytic behavior arises from metastable surface states (MSS). 10 The detailed discussion about the electrocatalytic activity of Au can be found in the review article and the contained references.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Oxidation and Determination of Glucose Using Cyclic Voltammetry and a One‐step Prepared Nanoporous Gold Wire Electrode

Cheng

Chen

2013

J Chinese Chemical Soc

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A nanoporous gold wire electrode (NPGWE) was prepared using a published one-step method from a 0.3 M oxalic acid at room temperature. It was found in this study that the surface morphology, including the pore size and the width of the ligaments, and thus the surface roughness of the NPGWE could be easily manipulated by controlling the solution stirring rate. The NPGWE was used for the study of electrochemical oxidation and determination of glucose in 0.1 M NaOH using cyclic voltammetry. The effect of two potential interferences chloride ion and ascorbic acid was assessed. The electrode showed a linear range of glucose concentration from 0.5 mM to 10 mM with a detection limit of 8 mM.

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Effects of Pt decoration on the electrocatalytic activity of nanoporous gold electrode toward glucose and its potential application for constructing a nonenzymatic glucose sensor

Cited by 102 publications

References 38 publications

Nanoporous Gold Electrodes and Their Applications in Analytical Chemistry

Nanoporous Gold Electrodes and Their Applications in Analytical Chemistry

Kinetic studies of glucose electrocatalytic oxidation on GC/Ni electrode

Electrochemical Oxidation and Determination of Glucose Using Cyclic Voltammetry and a One‐step Prepared Nanoporous Gold Wire Electrode

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