Pt–Pb alloy nanoparticle/carbon nanotube nanocomposite: a strong electrocatalyst for glucose oxidation

Cui, Hui‐Fang; Ye, Jianshan; Liu, Xiao; Zhang, Wei-De; Sheu, Fwu‐Shan

doi:10.1088/0957-4484/17/9/043

Cited by 181 publications

(96 citation statements)

References 31 publications

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“…The response is saturated at a higher glucose concentration of about 20 mM. The sensitivity of the Nafion/CuO/GC electrode is significantly higher than those using SWNTs film [13], MWNTs [19], and precious metals and nanoparticles [15,17,18,20,23,24,36,37] based electrodes reported previously, which may be attributed to the fact that CuO nanospheres, consisting of many nanoneedles, can significantly increase the electrocatalytic active surface and promote electron transfer in the direct oxidation of glucose. By assuming that the average diameter of CuO nanospheres is 700 nm, it is estimated that there are about two hundred million CuO nanospheres entrapped in Nafion thin film.…”

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confidence: 91%

CuO Nanospheres Based Nonenzymatic Glucose Sensor

et al. 2008

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CuO nanospheres, synthesized by a simple one-step hydrothermal method, have been applied to modify the glassy carbon (GC) electrode for sensitive nonenzymatic glucose detection. The CuO nanospheres modified electrode, compared to the Nafion modified GC electrode, exhibits an enhanced electrocatalytic property for direct glucose oxidation and shows a fast response and a high sensitivity for the amperometric detection of glucose. It has been determined that the dissolved oxygen is not involved in glucose oxidation and the high concentration of NaCl does not poison the electrode. These results also indicate that CuO nanospheres have great potential application in electrochemical detection.Keywords: Cupric oxide, Nanospheres, Nonenzymatic, Oxidation, Glucose DOI: 10.1002/elan.200804327 Diabetes is a metabolic disorder and a major world health problem. There are over 170 million diabetics worldwide (WHO 2004) and the number is projected to 300 million in 2025, so glucose detection is becoming incredibly important to the patients suffering from diabetes [1,2]. Due to its high sensitivity and selectivity to glucose and stable activity over a broad range of pH [3], glucose oxidase (GOx) has been widely used to construct various amperometric biosensors for glucose detection [1, 4 -12]. However, due to the intrinsic feature of enzymes, GOx-based biosensors suffer from a stability problem [13]. In recent years, considerable attention has been paid to develop enzyme-free electrodes [14 -19]. Precious metals [14,15,17,20], metal alloys [18,21], and metal nanoparticles [16, 22 -24] have been extensively investigated in the development of nonenzymatic glucose sensors. However, these electrodes have drawbacks such as low sensitivity and costliness, and also suffer from the poisoning of chloride ions [15,19,25], thus, their application is greatly limited. Therefore, the development of a cost-effective, sensitive, and reliable enzyme-free glucose sensor is still greatly demanded [13].Cupric oxide (CuO), a p-type semiconductor with a narrow band gap of 1.2 eV, has been studied intensely because of its numerous applications in catalysis, semiconductors, batteries, gas sensors, biosensors, and field transistors [26 -32]. CuO-carbon black modified composite and CuO-coated glass beads have been reported for the detection of glucose, but their application is limited by the tedious fabrication processes [33,34]. With the development of nanotechnology, nanostructured CuO is promising in the development of nonenzymatic glucose sensors because of its highly specific surface area, good electrochemical activity, and the possibility of promoting electron transfer reactions at a lower overpotential. Previous attempts to utilize CuO nanomaterials for the amperometric detection of glucose are limited. Recently Zhuang et al. reported CuO nanowires synthesized on a Cu rod for glucose detection [25]. The developed sensor is elegant and shows an improved sensitivity. However, the synthesis of CuO nanowires is still tedious and involves mu...

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confidence: 91%

CuO Nanospheres Based Nonenzymatic Glucose Sensor

et al. 2008

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“…CNTs are widely studied as supports of depositing metal nanoparticles as heterogeneous catalysts due to their extraordinary structure, good electronic conductivity and improved accessibility of reactants to the active sites [9,10]. For instance, Ru, Pd, Au and Pb were deposited on carbon nanobutes and resulted in good catalytic activity [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Pt Catalysts Supported on Multi-Walled Carbon Nanotubes with Various Diameters and Lengths

Liang

Wang

et al. 2007

Catal Lett

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Platinum electrocatalysts supported on multiwalled carbon nanotubes (MWCNTs) with various diameters and lengths were studied by using transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and cyclic voltammetry (CV) and Chronoamperometry. The results indicated that the MWCNTs with smaller diameter generated more amorphous carbon after a sonochemical oxidation treatment. Compared with the long MWCNTs, the short MWCNTs had more open ends, resulting in high-Pt dispersion and electrocatalytic activity towards methanol oxidation. Pt nanoparticles supported on short MWCNTs with a diameter of 30-50 nm exhibited the best Pt dispersion and highest methanol oxidation activity among the catalysts studied. The high activities of the catalysts based on short MWCNTs were due to both the intrinsic high activity of the ends of MWCNTs and a good Pt distribution.

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“…Cui et al developed PtPb alloy catalysts, which showed enhanced catalytic activity. 10 However, high costs and poisoning either by intermediates during glucose oxidation or by chloride ion under neutral conditions are issues to be resolved before their widespread use as biofuel-cell catalysts can be realized.…”

Section: -14mentioning

confidence: 99%

Electrodeposited NiCu Alloy Catalysts for Glucose Oxidation

Lim¹,

Ahn²,

Hyun³

et al. 2014

Bulletin of the Korean Chemical Society

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NiCu alloys have been suggested as potential candidates for catalysts in glucose oxidation. In this study, NiCu alloys with different compositions were prepared on a glassy carbon substrate by changing the electrodeposition potential to examine the effect of Ni/Cu ratios in alloys on catalytic activity toward glucose oxidation. Cyclic voltammetry and chronoamperometry showed that NiCu alloys had higher catalytic activity than pure Ni and Cu catalysts. Especially, Ni59Cu41 had superior catalytic activity, which was about twice that of Ni at a given oxidation potential. X-ray analyses showed that the oxidation state of Ni in NiCu alloys was increased with the content of Cu by lattice expansion. Ni components in alloys with higher oxidation state were more effective in the oxidation of glucose.

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Pt–Pb alloy nanoparticle/carbon nanotube nanocomposite: a strong electrocatalyst for glucose oxidation

Cited by 181 publications

References 31 publications

CuO Nanospheres Based Nonenzymatic Glucose Sensor

CuO Nanospheres Based Nonenzymatic Glucose Sensor

Investigation of Pt Catalysts Supported on Multi-Walled Carbon Nanotubes with Various Diameters and Lengths

Electrodeposited NiCu Alloy Catalysts for Glucose Oxidation

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