A hydrogen peroxide sensor based on a horseradish peroxidase/polyaniline/carboxy-functionalized multiwalled carbon nanotube modified gold electrode

Hua, Mu Yi; Lin, Yu Chen; Tsai, Rung Ywan; Chen, Hao Ming; Liu, Yin Chih

doi:10.1016/j.electacta.2011.08.043

Cited by 50 publications

(21 citation statements)

References 54 publications

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“…PANI can be a good matrix for enzyme immobilization, however, the conductivity of PANI is not satisfactory (∼1.0 × 10 −8 S/cm), so the concentration of aniline will influence the electron transfer ability at the PANI/G‐solution interface. Figure (A) shows the cyclic voltammograms (CVs) of PANI/G obtained from different concentrations of aniline (0, 5, 10, 20, and 50 m M ).…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, the simple, accurate and reliable measurement of H 2 O 2 has become an attractive challenge for researchers in analytical chemistry. Currently, the determination of H 2 O 2 is achieved via different techniques, such as chemiluminescence, fluorimetry, spectrophotometry, and electrochemistry . In comparison, electrochemical methods are advantageous due to simplicity, low‐cost, celerity, high sensitivity, and selectivity …”

Section: Introductionmentioning

confidence: 99%

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A novel hydrogen peroxide sensor based on Ag nanoparticles decorated polyaniline/graphene composites

Xiong

Shen

et al. 2015

J of Applied Polymer Sci

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A novel electrochemical sensor based on Ag nanoparticles (AgNPs) decorated polyaniline/graphene composites (PANI/G) is developed, which can be used for sensitive determination of H 2 O 2 . For the construction of the H 2 O 2 sensor, polyaniline (PANI) is first electrodeposited on the surface of graphene (G) to form PANI/G, and then horseradish peroxidase (HRP) loaded on AgNPs (HRP/AgNPs) is immobilized on to the PANI/G. H 2 O 2 can be catalyzed by HRP to generate current response which can be significantly enhanced by AgNPs, and thus the PANI/G based sensor can be utilized for the detection of H 2 O 2 . Under the optimized conditions, the proposed H 2 O 2 sensor exhibits wide linear response to H 2 O 2 concentration ranging from 0.25 to 2.25 mM with a detection limit of 0.03 mM (signal-to-noise ratio of 3), and it also shows high selectivity and reproducibility. The method is simple and costeffective, and can be a promising candidate as the sensitive sensing platform for H 2 O 2 .

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A novel hydrogen peroxide sensor based on Ag nanoparticles decorated polyaniline/graphene composites

Xiong

Shen

et al. 2015

J of Applied Polymer Sci

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“…This technique was used in the visualization of SPIONs in the human cochleae and mouse inner ear cell culture [85]. Incorporation of peroxidase into or onto NPs, which is widely used in the construction of hydrogen peroxide biosensors, may represent useful tool in the visualization of nanoparticles [86,87]. Like this modified NPs may catalyze the oxidation of peroxidase substrates to produce a color reaction at the site of NPs.…”

Section: Imaging By Microscopic Techniquesmentioning

confidence: 99%

Modern Micro and Nanoparticle-Based Imaging Techniques

Ryvolová

Chomoucká

Drbohlavová

et al. 2012

Sensors

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The requirements for early diagnostics as well as effective treatment of insidious diseases such as cancer constantly increase the pressure on development of efficient and reliable methods for targeted drug/gene delivery as well as imaging of the treatment success/failure. One of the most recent approaches covering both the drug delivery as well as the imaging aspects is benefitting from the unique properties of nanomaterials. Therefore a new field called nanomedicine is attracting continuously growing attention. Nanoparticles, including fluorescent semiconductor nanocrystals (quantum dots) and magnetic nanoparticles, have proven their excellent properties for in vivo imaging techniques in a number of modalities such as magnetic resonance and fluorescence imaging, respectively. In this article, we review the main properties and applications of nanoparticles in various in vitro imaging techniques, including microscopy and/or laser breakdown spectroscopy and in vivo methods such as magnetic resonance imaging and/or fluorescence-based imaging. Moreover the advantages of the drug delivery performed by nanocarriers such as iron oxides, gold, biodegradable polymers, dendrimers, lipid based carriers such as liposomes or micelles are also highlighted.

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“…MWCNTs have been introduced as excellent materials for the construction of electrochemical sensors based on glassy carbon electrode (X. J. Zhang et al 2012), gold electrode (Hua et al 2011), and carbon paste electrodes (Mokhtari et al 2012;Yang et al 2012). Researchers have reported some papers about multiwalled carbon nanotube ELECTROCHEMICAL SENSOR FOR BISPHENOL A 997 paste electrodes without modified MIPs Keyvanfard et al 2013;Taherkhani et al 2012;K.…”

Section: Introductionmentioning

confidence: 99%

Determination of Bisphenol A Using an Electrochemical Sensor Based on a Molecularly Imprinted Polymer-Modified Multiwalled Carbon Nanotube Paste Electrode

et al. 2014

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A novel electrochemical sensor for bisphenol A was developed through the combination of a molecular imprinting technique with a multiwalled carbon nanotube paste electrode. A molecularly imprinted polymer and nonimprinted polymer were synthesized in the presence and absence of bisphenol A, and then used to prepare the electrode. The bisphenol A imprinted polymer was applied as a selective recognition element in the electrochemical sensor. Differential pulse voltammetry was used to characterize the electrochemical behavior of bisphenol A at the modified electrodes. The results showed that the imprinted sensor had highest response for bisphenol A. Parameters including the carbon paste composition, pH, and adsorption time for the imprinted sensor were optimized. Under the optimized conditions, the differential pulse voltammetry peak current was linear with the concentration of bisphenol A from 0.08 to 100.0 lM, with a detection limit of 0.022 lM. The imprinted sensor for bisphenol A exhibited good selectivity, stability, and reproducibility. This sensor was successfully used for the determination of bisphenol A in real water samples.

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A hydrogen peroxide sensor based on a horseradish peroxidase/polyaniline/carboxy-functionalized multiwalled carbon nanotube modified gold electrode

Cited by 50 publications

References 54 publications

A novel hydrogen peroxide sensor based on Ag nanoparticles decorated polyaniline/graphene composites

A novel hydrogen peroxide sensor based on Ag nanoparticles decorated polyaniline/graphene composites

Modern Micro and Nanoparticle-Based Imaging Techniques

Determination of Bisphenol A Using an Electrochemical Sensor Based on a Molecularly Imprinted Polymer-Modified Multiwalled Carbon Nanotube Paste Electrode

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