A non-enzymatic glucose sensing based on hollow cuprous oxide nanospheres in a Nafion matrix

Cao, Hongmei; Yang, Ailing; Li, Hua; Wang, Lele; Li, Shun-pin; Kong, Jilie; Bao, Xichang; Yang, Renqiang

doi:10.1016/j.snb.2015.03.026

Cited by 61 publications

(23 citation statements)

References 33 publications

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“…To avoid these problems, non‐enzymatic glucose sensors have recently been developed . To date, various nanostructured materials including metal nanoparticles, metal oxides, conducting polymers, and their hybrid materials have been explored as non‐enzymatic glucose sensors. Carbon nanomaterials such as carbon nanotubes, graphene, and their hybrid materials have also been widely explored as sensor‐active materials.…”

Section: Introductionsupporting

confidence: 82%

One‐Step Electrodeposition of NiCo₂S₄ Nanosheets on Patterned Platinum Electrodes for Non‐Enzymatic Glucose Sensing

Kannan

Morgan

et al. 2016

Chemistry An Asian Journal

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Abstract:We describe the preparation of NiCo2S4 (NCS) nanosheets on photolithographically patterned platinum electrodes by electrodeposition.The as-prepared nanosheets were systematically characterized by field emission scanning electron microscope (FESEM), energy dispersive X-ray (EDX) and X-ray photoelectron spectroscopy (XPS) techniques. The NCS modified Pt electrode was used as a non-enzymatic glucose sensor. The sensor response exhibited two linear regions in glucose concentration, with a limit of detection of 1.2 μM. The sensors showed that the asprepared NCS nanosheets have excellent electrocatalytic activity towards glucose with long stability, good reproducibility and excellent anti-interference property, thus demonstrating that this material holds promise for the development of a practical glucose sensor.

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Section: Introductionsupporting

confidence: 82%

One‐Step Electrodeposition of NiCo₂S₄ Nanosheets on Patterned Platinum Electrodes for Non‐Enzymatic Glucose Sensing

Kannan

Morgan

et al. 2016

Chemistry An Asian Journal

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“…The different morphologies of Cu 2 O nanomaterials, such as hollow spheres, cubes, wires, octahedrons and cages, can be synthesized by adjusting the synthesis conditions [28]. At present, various electrochemical sensors based on Cu 2 O nanoparticles have been constructed for the detection of H 2 O 2 [29,30], glucose [30][31][32], dopamine [33][34][35], herbicide paraquat [36], L-tyrosine [37], vanillin [38], sunset yellow [39] and NO 2 [40]. As far as we know, the use of Cu 2 O for the determination of UA has rarely been reported in the literature.…”

Section: Introductionmentioning

confidence: 99%

Determination of Uric Acid in Co-Presence of Dopamine and Ascorbic Acid Using Cuprous Oxide Nanoparticle-Functionalized Graphene Decorated Glassy Carbon Electrode

Ning

Luo

et al. 2018

Catalysts

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Cuprous oxide nanoparticles (Cu 2 O NPs) were dispersed into a graphene oxide (GO) solution to form a homogeneous Cu 2 O-GO dispersion. After this, the cuprous oxide nanoparticles were functionalized to electrochemically reduce the graphene oxide decorated glassy carbon electrode (Cu 2 O-ErGO/GCE). This was prepared by coating the Cu 2 O-GO dispersion onto the surface of the glassy carbon electrode (GCE), which was followed by a potentiostatic reduction process. An irreversible two-electron reaction of uric acid (UA) was observed at the voltammetric sensor. Moreover, the high concentrations of dopamine (DA) and ascorbic acid (AA) hardly affected the peak current of UA, which suggested that Cu 2 O-ErGO/GCE have excellent selectivity for UA. This is probably because the response peaks of the three compounds are well-separated from each other. The oxidation peak current was proportional to the concentration of UA in the ranges of 2.0 nM−0.6 µM and 0.6 µM−10 µM, respectively, with a low limit of detection (S/N = 3, 1.0 nM) after an accumulation time of 120 s. Cu 2 O-ErGO/GCE was utilized for the rapid detection of UA in human blood serum and urine samples with satisfactory results. when detecting UA with bare electrodes since they have similar oxidation peak potentials [10][11][12]. Nanocomposite-modified electrodes can improve the anti-interference performance and selectivity, which is a common method that is used to solve this problem. At present, many chemically modified electrodes have been proposed for the determination of UA [9,[13][14][15][16][17][18][19][20][21][22] although their selectivity is limited, especially due to the coexistence of DA and AA. Hence, developing a modified electrode with high sensitivity and selectivity to meet clinical demands is still challengeable and desirable.Catalysts 2018, 8, x FOR PEER REVIEW 2 of 15 potentials [10][11][12]. Nanocomposite-modified electrodes can improve the anti-interference performance and selectivity, which is a common method that is used to solve this problem. At present, many chemically modified electrodes have been proposed for the determination of UA [9,[13][14][15][16][17][18][19][20][21][22] although their selectivity is limited, especially due to the coexistence of DA and AA. Hence, developing a modified electrode with high sensitivity and selectivity to meet clinical demands is still challengeable and desirable. Scheme 1. The reaction mechanism of UA.In the past few years, transition metals and metal oxides have received increasing attention in many fields, such as sensors and electrocatalysis, due to their unique sensing performance and superior electrocatalytic activity [9,11,23,24]. Among these metal oxides, cuprous oxide (Cu2O) is a new type of p-type semiconductor with a narrow band gap, which can also be easily excited by visible light. Due to their outstanding advantages, such as non-toxic, low cost and stable photochemical properties, Cu2O nanoparticles have been extensively used in many fields, such as new energy, photocatalytic degradation, ...

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“…The explicit form of this structure is highly dependent on the molecular mass distribution and preparation method [25]. Due to the presence of pores and channels, glucose is capable of penetrating the membrane and blocking other potential interference as well [12,13,23]. Moreover, if the switching is indeed caused by chloride ions, its effects should be minimized, due to repelling of anions by the Nafion [24,25].…”

Section: Influence Of Nafion Coating On the Calibration Curvementioning

confidence: 99%

“…The second approach is based on coating the electroactive substrate with various polymers acting as a semi-permeable barrier enabling glucose transfer but not allowing for the transport of species affecting the sensing response. Many biocompatible macromolecules were proposed for this function, for example poly(Ethylene Glycol) (PEG) [8], its oligomers [9] and copolymers [10], modified polysaccharides such as chitosan [11], perfluorinated ionomers such as Nafion [12,13] and poly(zwitterionic) coatings based on poly(sulfobetaine methacrylate) (pSBMA) [14] or poly(carboxybetaine methacrylate) (pCBMA) [15]. Nevertheless, most of the performed investigations were simply dedicated to the determination of the sensing parameters, such as the sensitivity or detection limit, but did not focus on the role of the particular coating in the glucose oxidation reaction.…”

Section: Introductionmentioning

confidence: 99%

Insightful Analysis of Phenomena Arising at the Metal|Polymer Interphase of Au-Ti Based Non-Enzymatic Glucose Sensitive Electrodes Covered by Nafion

et al. 2020

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This paper focuses on the examination of glucose oxidation processes at an electrode material composed of gold nanoparticles embedded in a titanium template. Three different conditions were investigated: the chloride content in the electrolyte, its ionic conductivity and the presence of a Nafion coating. The impact of the provided environment on the oxidation reaction was evaluated by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Two models, namely: chemisorption and incipient hydrous oxide/adatom mediator (IHOAM), were applied to explain the complex voltammetric responses of the electrodes exposed to solutions of varied glucose concentrations. Three different phenomena were observed for the studied cases. The first is related to the transition between the dominant mechanism of glucose oxidation from the IHOAM model to the chemisorption model. This happens only in an electrolyte containing chlorides after exceeding a certain amount of glucose. The second effect exhibits a bottleneck nature resulting from the presence of Nafion on the electrode’s surface. In this case, mass transport through the semi-permeable polymer is hampered, due to the blocking of channels and physical internal cross-linking. This leads to a preconcentration of glucose inside the pores resulting in an increase in both the material sensitivity and the linear range of the calibration curve. Lastly, the third effect is manifested in a low concentration of the supporting electrolyte. It is based on the fact that mass transport of hydroxyl ions is governed not only by diffusion, but also by migration. These three effects have a tremendous impact on the glucose oxidation mechanism and reveal its very complex nature.

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A non-enzymatic glucose sensing based on hollow cuprous oxide nanospheres in a Nafion matrix

Cited by 61 publications

References 33 publications

One‐Step Electrodeposition of NiCo₂S₄ Nanosheets on Patterned Platinum Electrodes for Non‐Enzymatic Glucose Sensing

One‐Step Electrodeposition of NiCo₂S₄ Nanosheets on Patterned Platinum Electrodes for Non‐Enzymatic Glucose Sensing

Determination of Uric Acid in Co-Presence of Dopamine and Ascorbic Acid Using Cuprous Oxide Nanoparticle-Functionalized Graphene Decorated Glassy Carbon Electrode

Insightful Analysis of Phenomena Arising at the Metal|Polymer Interphase of Au-Ti Based Non-Enzymatic Glucose Sensitive Electrodes Covered by Nafion

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A non-enzymatic glucose sensing based on hollow cuprous oxide nanospheres in a Nafion matrix

Cited by 61 publications

References 33 publications

One‐Step Electrodeposition of NiCo2S4 Nanosheets on Patterned Platinum Electrodes for Non‐Enzymatic Glucose Sensing

One‐Step Electrodeposition of NiCo2S4 Nanosheets on Patterned Platinum Electrodes for Non‐Enzymatic Glucose Sensing

Determination of Uric Acid in Co-Presence of Dopamine and Ascorbic Acid Using Cuprous Oxide Nanoparticle-Functionalized Graphene Decorated Glassy Carbon Electrode

Insightful Analysis of Phenomena Arising at the Metal|Polymer Interphase of Au-Ti Based Non-Enzymatic Glucose Sensitive Electrodes Covered by Nafion

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One‐Step Electrodeposition of NiCo₂S₄ Nanosheets on Patterned Platinum Electrodes for Non‐Enzymatic Glucose Sensing

One‐Step Electrodeposition of NiCo₂S₄ Nanosheets on Patterned Platinum Electrodes for Non‐Enzymatic Glucose Sensing