Non-enzymatic electrochemical CuO nanoflowers sensor for hydrogen peroxide detection

Song, Mee; Hwang, Sung Woo; Whang, Dongmok

doi:10.1016/j.talanta.2009.09.061

Cited by 292 publications

(132 citation statements)

References 22 publications

Supporting

Mentioning

127

Contrasting

Unclassified

Order By: Relevance

“…6b. The addition of H 2 O 2 to the stirred solution shows the increasing current response; however, the addition of interfering species such as AA (25 µM Table 2 with respect to operating conditions, sensitivity and the detection limit: it can be seen that the performance of the developed sensor is comparable to most of H 2 O 2 sensors reported in the literature [27][28][29][30][31][32]. …”

Section: Effect Of Increasing Concentration and Scan Rate At Gr/carbomentioning

confidence: 78%

Non-enzymatic Reduction of Hydrogen Peroxide Sensor Based on (Polyaniline-polystyrene Sulphonate) - Carboxylated Graphene Modified Graphite Electrode

Prasannakumar¹,

Manjunatha²,

Nethravathi³

et al. 2012

Port. Electrochim. Acta

View full text Add to dashboard Cite

A modified electrode is fabricated by the electrodeposition of polyaniline-polystyrene sulphonate composite onto the carboxylated graphene modified graphite electrode for the detection of hydrogen peroxide (H 2 O 2 ). The modified electrode displayed excellent catalytic response to the reduction of hydrogen peroxide in neutral pH. It was found that the presence of carboxylated graphene in the sensor system could effectively increase the electron transfer rate and stability. The modified electrode was characterized by cyclic voltammetry, electrochemical impedance spectroscopy and atomic force microscopy. Chronoamperometric studies showed the linear relationship between the reduction peak current and the concentration of H 2 O 2 in the range 25 to 350 µM (R = -0.995) with the detection limit of 1×10 -6 mol/L (S/N=3). Further, electrochemical analysis of H 2 O 2 in the presence of common interferents such as dopamine, uric acid and ascorbic acid with the modified electrode reveals that there is no overlapping signal from the interferents.

show abstract

Section: Effect Of Increasing Concentration and Scan Rate At Gr/carbomentioning

confidence: 78%

Non-enzymatic Reduction of Hydrogen Peroxide Sensor Based on (Polyaniline-polystyrene Sulphonate) - Carboxylated Graphene Modified Graphite Electrode

Prasannakumar¹,

Manjunatha²,

Nethravathi³

et al. 2012

Port. Electrochim. Acta

View full text Add to dashboard Cite

show abstract

“…These also suggested that the kinetics of the overall process was controlled by the diffusion process which was assumed to be related to the relatively slow diffusion of protons. [47] The effect of pH value…”

Section: Electrochemical Characteristics Of the Sensormentioning

confidence: 99%

A Hydrogen Peroxide Sensor Based on Silver Nanoparticles Biosynthesized by Bacillus subtilis

et al. 2013

View full text Add to dashboard Cite

In this study, silver nanoparticles (AgNPs) were biosynthesized by Bacillus subtilis and used to construct a nonenzymatic hydrogen peroxide (H 2 O 2 ) sensor. Scanning electron microscopy, transmission electron microscopy and energy dispersive spectroscopy confirmed that the AgNPs were prepared successfully with spherical morphology. The electrochemical properties of the resulted sensor were investigated by cyclic voltammetry, chronoamperometry and electrochemical impedance spectroscopy. It was found that the sensor exhibited good electrocatalytic activity towards H 2 O 2 reduction with a wider linear range from 0.05 to 120 mmol•L −1 , a detection limit of 8 μmol•L −1 and a fast response time less than 2 s. The sensor exhibited good selectivity for H 2 O 2 determination in the presence of glucose, acetaminophen, ascorbic acid and uric acid.

show abstract

“…Different synthetic methods have been studied for the preparation of CuO nanoparticles with various morphologies, including nanowire, nanosheet, nanorod, and nanoflower. 14,15 Although most of metallic Cu 0 nanomaterials are not stable enough to be used for electroanalysis because they are easily oxidized in air or aqueous solution, chemically more stable CuO nanomaterials have been studied for various applications including electrochemical H 2 O 2 sensors. 11 The interesting occurrence of the growth of CuO nanowires during the in situ oxidation of copper in air has been reported intensively.…”

Section: Introductionmentioning

confidence: 99%

Low Potential and Non-Enzymatic Hydrogen Peroxide Sensor Based on Copper Oxide Nanoparticle on Activated Pencil Graphite Electrode

Kamyabi¹,

Hajari²

2016

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

An electrochemical sensor for H 2 O 2 determination was prepared by electrodepositing copper oxide nanoparticles on the activated pencil graphite electrodes. At first, a study has been made of the optimum conditions for chemical activation of the pencil graphite electrodes (APGE) and then the activated pencil graphite electrode was modified with copper oxide nanoparticles (CuO/APGE) and used as a non-enzymatic hydrogen peroxide sensor. The morphology of the modified electrode surface was investigated by scanning electron microscopy (SEM). Upon the addition of H 2 O 2 , the modified electrode (CuO/APGE) exhibits significant oxidation of H 2 O 2 with starting potential around +0.05 V (vs. Ag/AgCl) which dramatically decreases the overpotential of H 2 O 2 oxidation. Under the optimal experiment conditions, the electrocatalytic response current of this sensor was proportional to the H 2 O 2 concentration in the range of 5.0 × 10 −6 to 1.6 × 10 −3 mol L -1 with a detection limit down to 0.21 µmol L -1 (signal/noise = 3). The sensitivity was calculated to be 4.75 µAL mmol -1 . The electrochemical active surface area and the catalytic rate constant of hydrogen peroxide electro-oxidation were calculated. The H 2 O 2 sensor exhibited a low detection limit, a good signal reproducibility (relative standard deviation (RSD), n = 4) 2.36% and the accurate measurements in milk as the real sample.

show abstract

Non-enzymatic electrochemical CuO nanoflowers sensor for hydrogen peroxide detection

Cited by 292 publications

References 22 publications

Non-enzymatic Reduction of Hydrogen Peroxide Sensor Based on (Polyaniline-polystyrene Sulphonate) - Carboxylated Graphene Modified Graphite Electrode

Non-enzymatic Reduction of Hydrogen Peroxide Sensor Based on (Polyaniline-polystyrene Sulphonate) - Carboxylated Graphene Modified Graphite Electrode

A Hydrogen Peroxide Sensor Based on Silver Nanoparticles Biosynthesized by Bacillus subtilis

Low Potential and Non-Enzymatic Hydrogen Peroxide Sensor Based on Copper Oxide Nanoparticle on Activated Pencil Graphite Electrode

Contact Info

Product

Resources

About