Electrochemical Deposition of Mesoporous Pt–Au Alloy Films in Aqueous Surfactant Solutions: Towards a Highly Sensitive Amperometric Glucose Sensor

Li, Cuiling; Wang, Hongjing; Yamauchi, Yusuke

doi:10.1002/chem.201203378

Cited by 131 publications

(81 citation statements)

References 48 publications

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“…The most studied alloy is the Pt-Au one, investigating also different morphologies of this, such as nanocorals, nanoflowers, etc. In comparison with other alloys (Table 1), the above metal combination does not exhibit a broad detection range and the limit is not low enough for detecting very small amounts of glucose [49][50][51].…”

Section: Pt-based Electrocatalystsmentioning

confidence: 94%

Electrocatalysts for Glucose Electrooxidation Reaction: A Review

2015

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The up-to-date research as far as it concerns the abiotic direct glucose fuel cells (DGFCs) is summarized and discussed in the present review. Platinum and goldbased as well as Raney-type electrocatalysts are among the most studied ones. In abiotically (non-implantable) DGFCs, unsupported Pt and PtRuO 2 , exhibited good activity (power density *20 mW cm -2 ), at room temperature and at atmospheric pressure. On the other hand, Au-based electrocatalysts adopted in a DGFC resulted in power densities up to ca. 5 mW cm -2 , exhibiting however high poisoning tolerance. Recently, after the introduction of alkaline membranes into the market, Pd-based electrocatalysts have attracted the attention of the research community because of their enhanced activity in alkaline media. However, there are still very few investigations where membrane electrode assemblies with palladium electrocatalysts have been applied. Moreover, Raney-type electrocatalysts, not yet examined for other fuels in direct polymer electrolyte fuel cells, are considered to be the most appropriate for implantable abiotic DGFCs. A novel implantable fuel cell in a human brain performed with 3.4 9 10 -3 lW power for 10 h adopting Raney-type electrocatalysts.

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Section: Pt-based Electrocatalystsmentioning

confidence: 94%

Electrocatalysts for Glucose Electrooxidation Reaction: A Review

2015

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“…Moreover, a particular arrangement of surface atoms of the two metals suppresses adsorbed poisonous species on surface-active sites of Pt. The shift of the electron density of the d-band of Pt in the presence of another metal reduces the strength of the molecular adsorption on Pt and, therefore, lower the detection potential [49,50]. Note that the main factor that contributes to lowering the potential, is not the higher surface area of the nanostructures but the particular combination of two different metals.…”

Section: Effect Of the Potential On The Sensitivitymentioning

confidence: 99%

A bimetallic nanocoral Au decorated with Pt nanoflowers (bio)sensor for H2O2 detection at low potential

Sanzò

Taurino

Puppo

et al. 2017

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a b s t r a c tIn this work, we have developed for the first time a method to make novel gold and platinum hybrid bimetallic nanostructures differing in shape and size. Au-Pt nanostructures were prepared by electrodeposition in two simple steps. The first step consists of the electrodeposition of nanocoral Au onto a gold substrate using hydrogen as a dynamic template in an ammonium chloride solution. After that, the Pt nanostructures were deposited onto the nanocoral Au organized in pores. Using Pt (II) and Pt (IV), we realized nanocoral Au decorated with Pt nanospheres and nanocoral Au decorated with Pt nanoflowers, respectively. The bimetallic nanostructures showed better capability to electrochemically oxidize hydrogen peroxide compared with nanocoral Au. Moreover, Au-Pt nanostructures were able to lower the potential of detection and a higher performance was obtained at a low applied potential. Then, glucose oxidase was immobilized onto the bimetallic Au-Pt nanostructure using cross-linking with glutaraldehyde. The biosensor was characterized by chronoamperometry at +0.15 V vs. Ag pseudo-reference electrode (PRE) and showed good analytical performances with a linear range from 0.01 to 2.00 mM and a sensitivity of 33.66 mA/mM cm 2 . The good value of K m app (2.28 mM) demonstrates that the hybrid nanostructure is a favorable environment for the enzyme. Moreover, the low working potential can minimize the interference from ascorbic acid and uric acid as well as reducing power consumption to effect sensing. The simple procedure to realize this nanostructure and to immobilize enzymes, as well as the analytical performances of the resulting devices, encourage the use of this technology for the development of biosensors for clinical analysis.

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“…Therefore, a large number of nanomaterials have been used to enhance the electrocatalytic ability and improve antifouling property of the modified electrodes [14]. Noble metals such as gold [18], platinum [19], palladium [20], and silver [21], metal oxides [22], and bimetallic materials [15,23,24] have been intensively studied. These researches are bound to increase the cost of sensors, thus making design of economical glucose sensors eagerly pursued.…”

Section: Introductionmentioning

confidence: 99%

Enzyme-free sensing of glucose on a copper electrode modified with nickel nanoparticles and multiwalled carbon nanotubes

et al. 2014

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We describe a new electrochemical platform for direct sensing of glucose. The electrode was prepared by controlled electrodeposition of nickel nanoparticles onto carbon nanotubes on a copper electrode. The sensor was optimized by investigating the effects of the concentration of nickel precursor, electrolysis time and acidity of the medium. The nanocomposite was characterized by scanning electron microscopy and energy dispersive spectroscopy. Cyclic voltammetry of glucose in 0.1 M NaOH solution gives a well-defined anodic wave with a peak potential at 0.53 V (vs. Ag/AgCl) that indicates the direct electrooxidation of glucose at the nanomaterial. The electrode responds to glucose over a wide linear range (from 2 μM to 10 mM), with high sensitivity (3.8 mA mM −1 cm −2 ) and a low detection limit (0.7 μM). The sensor was applied to the determination of glucose in blood samples, and the results were in good agreement with data obtained by a commercially available glucometer. The method holds promise due to the ease of sensor fabrication and its robust performance and longevity.

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Electrochemical Deposition of Mesoporous Pt–Au Alloy Films in Aqueous Surfactant Solutions: Towards a Highly Sensitive Amperometric Glucose Sensor

Cited by 131 publications

References 48 publications

Electrocatalysts for Glucose Electrooxidation Reaction: A Review

Electrocatalysts for Glucose Electrooxidation Reaction: A Review

A bimetallic nanocoral Au decorated with Pt nanoflowers (bio)sensor for H2O2 detection at low potential

Enzyme-free sensing of glucose on a copper electrode modified with nickel nanoparticles and multiwalled carbon nanotubes

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