Amperometric Detection of H<sub>2</sub>O<sub>2</sub> Using Gold Electrodes Modified with Starburst PAMAM Dendrimers and Prussian Blue

Bustos, Erika; Chapman, Thomas W.; Rodríguez-Valadéz, Francisco J.; Godı́nez, Luis A.

doi:10.1002/elan.200603619

Cited by 16 publications

(4 citation statements)

References 25 publications

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“…Hydrogen Peroxide (9) The reduction of hydrogen peroxide is catalysed by PB (K 2 Fe 4 III [Fe II (CN) 6 ] 3 •14H 2 O) through the mediation of the ferric ions by electron transfer to H 2 O 2 molecules from Fe 2+ centers in the PB, with the next electrochemical reaction (19):…”

Section: Discussion Of Resultsmentioning

confidence: 99%

Electrodes Modified with Nanocomposites of PAMAM Dendrimers and Inorganic Electrocatalysts: Sensing Molecules with Biological Importance

et al. 2006

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Dendrimers resemble covalent micelles that provide well defined cavities and can enhance the hydrophobic nature of an electrodesolution interface. Dendrimers attached to an electrode can stabilize and concentrate mediators such as catalytic nanoparticles by forming nanocomposites. Such nanocomposites can improve the kinetics of specific electrochemical reactions. In this work we describe the preparation and testing of electrodes modified with nanocomposites of inorganic electrocatalysts, namely, Prussian Blue (PB) and platinum-group metals (Ir, Os, Pd, Pt, Rh and Ru), within tethered PAMAM dendrimers for use as amperometric sensors. These electrodes offer good sensitivity in the detection of molecules with biological importance, such as H 2 O 2 and dopamine, in neutral aqueous media.

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Section: Discussion Of Resultsmentioning

confidence: 99%

Electrodes Modified with Nanocomposites of PAMAM Dendrimers and Inorganic Electrocatalysts: Sensing Molecules with Biological Importance

et al. 2006

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“…A lot of quantitative methods have already been applied for the detection of H 2 O 2 , most of them are based on spectrometry [ 42 – 45 ], chemoluminescence [ 46 – 49 ], amperometry [ 50 – 53 ] and electrochemistry [ 54 – 57 ]. The conventional spectrometric and chemoluminescence methods are commonly time-consuming and costly.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Peroxide Sensing Based on Inner Surfaces Modification of Solid-State Nanopore

Zhu

Liu

2017

Nanoscale Res Lett

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There are many techniques for the detection of molecules. But detection of molecules through solid-state nanopore in a solution is one of the promising, high-throughput, and low-cost technology used these days. In the present investigation, a solid-state nanopore platform was fabricated for the detection of hydrogen peroxide (H2O2), which is not only a label free product but also a significant participant in the redox reaction. We have successfully fabricated silicon nitride (Si3N4) nanopores with diameters of ~50 nm by using a focused Ga ion beam, the inner surface of the nanopore has been modified with horseradish peroxidase (HRP) by employing carbodiimide coupling chemistry. The immobilized HRP enzymes have ability to induce redox reactions in a single nanopore channel. Moreover, a real-time single aggregated ABTS•+ molecular translocation events were monitored and investigated. The designed solid-state nanopore biosensor is reversible and can be applied to detect H2O2 multiple times.Electronic supplementary materialThe online version of this article (doi:10.1186/s11671-017-2190-x) contains supplementary material, which is available to authorized users.

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“…Recent studies have shown that electrodes modified with metal and oxide nanoparticles, such as Pt [8,9] , Au [10] , MnO 2 [11,12] , Fe 3 O 4 [13] , Ag [14][15][16][17][18] , and CuO [19,20] nanoparticles, exhibit good catalytic activity for H 2 O 2 . H 2 O 2 sensors based on nanomaterial electrodes are growing continuously [21][22][23] . Palladium (Pd) nanoparticles with high hydrogen storage capability and remarkable electrocatalytic activities toward various important substrates have gained increasing research interests [24][25][26][27] .…”

Section: Introductionmentioning

confidence: 99%

A Novel Nonenzymatic Hydrogen Peroxide Sensor Based on Pd Nanoparticles Modified Electrode

Zhuang

2011

AMM

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Pd nanoparticles have been prepared on the surface of glassy carbon electrode (GCE) by electrochemical deposition method and applied for the nonenzymatic detection of H2O2. Scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS) were employed to investigate the as-prepared Pd nanoparticles on the surface of GCE. The electrochemical properties of Pd nanoparticles modified GCE were also characterized by cyclic voltammetry and chronoamperometry. The results showed that Pd nanoparticles modified GCE had a favorable catalytic ability for the reduction of H2O2in PBS medium (pH=7.6). At an applied potential of -0.06 V, the nonenzymatic H2O2sensors produce high and reproducible sensitivity to H2O2with 52.45 μA/mmol۰dm–3. Linear responses were obtained over a concentration range from 0.15 mmol۰dm–3to 18 mmol۰dm–3with a detection limit of 25 μmol۰dm–3(S/N=3). Additionally, it exhibited a rapid response time (within 1s), which was much faster than some nonenzymatic H2O2sensors.

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Amperometric Detection of H₂O₂ Using Gold Electrodes Modified with Starburst PAMAM Dendrimers and Prussian Blue

Cited by 16 publications

References 25 publications

Electrodes Modified with Nanocomposites of PAMAM Dendrimers and Inorganic Electrocatalysts: Sensing Molecules with Biological Importance

Electrodes Modified with Nanocomposites of PAMAM Dendrimers and Inorganic Electrocatalysts: Sensing Molecules with Biological Importance

Hydrogen Peroxide Sensing Based on Inner Surfaces Modification of Solid-State Nanopore

A Novel Nonenzymatic Hydrogen Peroxide Sensor Based on Pd Nanoparticles Modified Electrode

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Amperometric Detection of H2O2 Using Gold Electrodes Modified with Starburst PAMAM Dendrimers and Prussian Blue

Cited by 16 publications

References 25 publications

Electrodes Modified with Nanocomposites of PAMAM Dendrimers and Inorganic Electrocatalysts: Sensing Molecules with Biological Importance

Electrodes Modified with Nanocomposites of PAMAM Dendrimers and Inorganic Electrocatalysts: Sensing Molecules with Biological Importance

Hydrogen Peroxide Sensing Based on Inner Surfaces Modification of Solid-State Nanopore

A Novel Nonenzymatic Hydrogen Peroxide Sensor Based on Pd Nanoparticles Modified Electrode

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Amperometric Detection of H₂O₂ Using Gold Electrodes Modified with Starburst PAMAM Dendrimers and Prussian Blue