Electrochemical determination of nitrite and iodate by use of gold nanoparticles/poly(3-methylthiophene) composites coated glassy carbon electrode

Huang, Xue; Li, Yongxin; Chen, Yuanli; Wang, Lun

doi:10.1016/j.snb.2008.06.028

Cited by 226 publications

(70 citation statements)

References 42 publications

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“…The detection limit was 0.35 µM based on the signal-to-noise ratio of 3. This value was much lower than that (2.3 µM) of an earlier report in which another modified electrode was used [31].…”

Section: Electrocatalytic Effect On Reduction Of Nitritecontrasting

confidence: 70%

An electrochemical sensing platform based on a new copper complex for the determination of hydrogen peroxide and nitrite

Zhuang

Jian

Wang

2009

Science and Technology of Advanced Materials

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A new copper(II) complex [Cu(C 12 H 23 N 3 ) 4 Br 2 ·2H 2 O] was synthesized and its structure was characterized by x-ray crystallography and elemental analysis. The copper atom had a distorted octahedron coordination involving two bromide anions and four nitrogen atoms from the 1-decyl-1H-[1,2,4]triazole ligands. Moreover, the electrochemical behavior and electrocatalysis of the carbon paste electrode (Cu-CPE) bulk-modified by the complex have been studied in detail. The Cu-CPE showed excellent electrocatalytic activities toward the reduction of hydrogen peroxide and nitrite, and the detection limit was much lower than that mentioned in earlier reports. This bulk-modified CPE has good reproducibility, long-term stability and surface renewability, which appear promising for constructing chemical sensors.

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Section: Electrocatalytic Effect On Reduction Of Nitritecontrasting

confidence: 70%

An electrochemical sensing platform based on a new copper complex for the determination of hydrogen peroxide and nitrite

Zhuang

Jian

Wang

2009

Science and Technology of Advanced Materials

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“…4 This unique structure of graphite allows ease of modification on a surface with a metal. 1 Various deposition procedures of gold nanoparticles (AuNPs) on carbon electrodes have been studied including electro-polymerization, [5][6][7][8] electro-grafting methods 9,10 and electro-deposition. [11][12][13][14][15] The latter method provides a much easier, rapid and lower cost procedure 13 because the preparation is less tedious and involves minimum chemical usage.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Preparation and Characterization of a Gold Nanoparticles Graphite Electrode: Application to Myricetin Antioxidant Analysis

Lee

Khor

et al. 2015

ANAL. SCI.

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Graphite material is abundantly available from recyclable sources. It possesses a good electrical conductance property, which makes it an attractive material as a working electrode. However, due to a high activation overpotential it has limited applications as compared to other solid metal electrodes. In this present work, we obtained a graphite rod from a used battery, and carried out electrochemical improvements by electro-deposition with gold nanoparticles (AuNPs). The heterogeneous electron transfer rate and electron transfer resistance of the fabricated electrode were improved. The electrode overpotential has shown improvement by 50 mV, and the effective surface area has increased by 2 fold. To determine the practicability of the AuNPs/graphite electrode, we used the electrode in the analysis of myricetin. A squarewave voltammetry was used in the analysis, and the detection response increased by 2.5 fold, which suggested an improvement in the electrode sensitivity.

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“…4 Therefore, the determination of nitrite and iodate plays an important role in several fields, such as foods, 5 drugs, 6 environmental protection and human health. [7][8][9][10] Chitosan (CS) is an amine-rich polysaccharide deprived from chitin, a major component of crustacean and insect shells. It has already been described as a promising material for modification of the electrode surface, due to its attractive properties, such as excellent film-forming ability, good stability, high permeability toward water, strong adherence to the electrode surface, biocompatibility, no toxicity, high mechanical strength and susceptibility to chemical modifications due to the presence of reactive amino and hydroxyl functional groups from its structure.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Determination of Nitrite and Iodate Based on Pt Nanoparticles Self-assembled on a Chitosan Modified Glassy Carbon Electrode

Zhou

Xian

et al. 2011

ANAL. SCI.

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Electrochemical determination of nitrite and iodate by use of gold nanoparticles/poly(3-methylthiophene) composites coated glassy carbon electrode

Cited by 226 publications

References 42 publications

An electrochemical sensing platform based on a new copper complex for the determination of hydrogen peroxide and nitrite

An electrochemical sensing platform based on a new copper complex for the determination of hydrogen peroxide and nitrite

Electrochemical Preparation and Characterization of a Gold Nanoparticles Graphite Electrode: Application to Myricetin Antioxidant Analysis

Electrochemical Determination of Nitrite and Iodate Based on Pt Nanoparticles Self-assembled on a Chitosan Modified Glassy Carbon Electrode

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