Rapid nonenzymatic monitoring of glucose and fructose using a CuO/multiwalled carbon nanotube nanocomposite-modified glassy carbon electrode

Shekarchizadeh, Hajar; Kadivar, Mahdi; Ensafi, Ali A.

doi:10.1016/s1872-2067(12)60586-5

Cited by 38 publications

(17 citation statements)

References 34 publications

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“…A detection limit of 2.5 µM and quantification limit of 20 µM were obtained. The data are competitive with respect to the state of the art of recent literature results concerning various non-enzymatic/enzymatic hybrid and gold-based nanostructures for glucose biosensors [20,28,[54][55][56][57]. The interference of the common species such as ascorbic acid and uric acid was studied and the details were reported elsewhere [38].…”

Section: Glucose Sensingmentioning

confidence: 84%

“…This new branch of science and technology combines electrochemical techniques with nanomaterials to address important issues, particularly in the sensor science [16]. Many non-enzymatic electrochemical sensors based on nanostructured gold, nanostructured copper, or nickel oxide-hydroxide have demonstrated several advantages with respect to the enzymatic sensors, such as stability, low cost, and tolerance to numerous oxidizing or reducing chemical species co-existing in the analysis media [17][18][19][20][21]. Gold shows significant electro-catalytic properties against oxidation of many organic species [22].…”

Section: Introductionmentioning

confidence: 99%

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Dewetted Gold Nanostructures onto Exfoliated Graphene Paper as High Efficient Glucose Sensor

et al. 2019

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Non-enzymatic electrochemical glucose sensing was obtained by gold nanostructures on graphene paper, produced by laser or thermal dewetting of 1.6 and 8 nm-thick Au layers, respectively. Nanosecond laser annealing produces spherical nanoparticles (AuNPs) through the molten-phase dewetting of the gold layer and simultaneous exfoliation of the graphene paper. The resulting composite electrodes were characterized by X-ray photoelectron spectroscopy, cyclic voltammetry, scanning electron microscopy, micro Raman spectroscopy and Rutherford back-scattering spectrometry. Laser dewetted electrode presents graphene nanoplatelets covered by spherical AuNPs. The sizes of AuNPs are in the range of 10–150 nm. A chemical shift in the XPS Au4f core-level of 0.25–0.3 eV suggests the occurrence of AuNPs oxidation, which are characterized by high stability under the electrochemical test. Thermal dewetting leads to electrodes characterized by faceted not oxidized gold structures. Glucose was detected in alkali media at potential of 0.15–0.17 V vs. saturated calomel electrode (SCE), in the concentration range of 2.5μM−30 mM, exploiting the peak corresponding to the oxidation of two electrons. Sensitivity of 1240 µA mM−1 cm−2, detection limit of 2.5 μM and quantifications limit of 20 μM were obtained with 8 nm gold equivalent thickness. The analytical performances are very promising and comparable to the actual state of art concerning gold based electrodes.

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Section: Glucose Sensingmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Dewetted Gold Nanostructures onto Exfoliated Graphene Paper as High Efficient Glucose Sensor

et al. 2019

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“…In order to find out the applicability of the Ni(II)‐SHP/CNT/CPE sensor for determination of glucose in the biological real samples, the electrode was used in blood serum and urine samples obtained from local hospital. It can be noted that the normal physiological level of glucose in the human blood serum is 3.0–8.0 mM . Before measuring the current response of Glc, 1 mL of the serum samples (containing 4.3 and 5.9 mM glucose) were diluted by a NaOH solution (0.1 M and pH=13.0) for preparation of sample solutions with specific concentrations of glucose (concentrations in the linear range of the fabricated sensor which are listed in Table ).…”

Section: Resultsmentioning

confidence: 99%

An Electrochemical Sensor Based on Ni(II) Complex and Multi Wall Carbon Nano Tubes Platform for Determination of Glucose in Real Samples

et al. 2016

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In the present paper, a stable and selective non‐enzymatic sensor is reported for determination of glucose (Glc) by using a carbon paste electrode modified with multiwall carbon nanotubes and Ni(II)‐SHP complex as modifier in an alkaline solution. This modified electrode showed impressive activity for oxidation of glucose in NaOH solution. Herein, Ni(II)‐SHP acts as a suitable platform for oxidation of glucose to glucolactone on the surface of the modified electrode by decreasing the overpotential and increasing in the current of analyte. Under the optimum conditions, the rate constant and electron transfer coefficient between electrode and modifier, were calculated to be 1.04 s−1 and 0.64, respectively. The anodic peak currents indicated a linear dependency with the square root of scan rate and this behavior is the characteristic of a diffusion controlled process. So, the diffusion coefficient of glucose was found to be 3.12×10−6 cm2 s−1 due to the used number of transferred electron of 1. The obtained results revealed two linear ranges (5 to 190.0 μM (R2=0.997), 210.0 to 700.0 μM (R2=0.999)) and the detection limit of 1.3 μM for glucose was calculated by using differential pulse voltammetry (DPV) method. Also, the designed sensor was used for determination of glucose in the blood serum and urine samples. Some other advantages of Ni(II)‐SHP/CNT/CPE sensor are remarkable reproducibility, stability and selectivity which can be related to using nanomaterial of carbon nanotubes due to enhancement of electrode surface area.

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“…Compared with several current techniques for the assay of glucose, this proposed Glu‐PPD/GCE sensor has a wider linear range or a lower detection limit than that of the other electrochemical sensor. As for the determination of fructose, Our Fru‐PPD/GCE sensor also shows its great advantage compared with another nonenzymatic sensor consisting of CuO/MWCNT/GCE 41, in which a linear relationship between the sensor response signal and fructose concentrations ranging from 1.0 to 20.0 mmol L −1 was obtained with a detection limit of 0.04 mmol L −1 . It was obvious that MIP for fructose is simpler and with a low detection limit.…”

Section: Analytical Performancementioning

confidence: 99%

A Salen–Co³⁺ Catalyst for the Hydration of Terminal Alkynes and in Tandem Catalysis with Ru–TsDPEN for the One‐Pot Transformation of Alkynes into Chiral Alcohols

et al. 2014

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The cobalt–salen complex (C1:[(salen)Co3+(OAc)]; salen= N,N′‐bis(salicylidene)ethylenediamine, OAc=acetate) was found to efficiently promote the hydration of terminal alkynes to give methyl ketones in the presence of the H2SO4 cocatalyst. In addition, the one‐pot transformation of alkynes into chiral alcohols through tandem catalysis by catalyst C1 coupled with a ruthenium–TsDPEN complex (C3: [(R,R‐TsDPEN)Ru2+(cymene)]; TsDPEN=(1R,2R)‐N‐(p‐toluenesulfonyl)‐1,2‐diphenylethylenediamine, cymene=1‐methyl‐4‐(1‐methylethyl)benzene) catalyst was realized with excellent yields and enantioselectivities.

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Rapid nonenzymatic monitoring of glucose and fructose using a CuO/multiwalled carbon nanotube nanocomposite-modified glassy carbon electrode

Cited by 38 publications

References 34 publications

Dewetted Gold Nanostructures onto Exfoliated Graphene Paper as High Efficient Glucose Sensor

Dewetted Gold Nanostructures onto Exfoliated Graphene Paper as High Efficient Glucose Sensor

An Electrochemical Sensor Based on Ni(II) Complex and Multi Wall Carbon Nano Tubes Platform for Determination of Glucose in Real Samples

A Salen–Co³⁺ Catalyst for the Hydration of Terminal Alkynes and in Tandem Catalysis with Ru–TsDPEN for the One‐Pot Transformation of Alkynes into Chiral Alcohols

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Rapid nonenzymatic monitoring of glucose and fructose using a CuO/multiwalled carbon nanotube nanocomposite-modified glassy carbon electrode

Cited by 38 publications

References 34 publications

Dewetted Gold Nanostructures onto Exfoliated Graphene Paper as High Efficient Glucose Sensor

Dewetted Gold Nanostructures onto Exfoliated Graphene Paper as High Efficient Glucose Sensor

An Electrochemical Sensor Based on Ni(II) Complex and Multi Wall Carbon Nano Tubes Platform for Determination of Glucose in Real Samples

A Salen–Co3+ Catalyst for the Hydration of Terminal Alkynes and in Tandem Catalysis with Ru–TsDPEN for the One‐Pot Transformation of Alkynes into Chiral Alcohols

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About

A Salen–Co³⁺ Catalyst for the Hydration of Terminal Alkynes and in Tandem Catalysis with Ru–TsDPEN for the One‐Pot Transformation of Alkynes into Chiral Alcohols