Fabrication of cytochrome c-poly(5-amino-2-napthalenesulfonic acid) electrode by one step procedure and direct electrochemistry of cytochrome c

Balamurugan, A.; Chen, Shen‐Ming

doi:10.1016/j.bios.2008.07.063

Cited by 12 publications

(1 citation statement)

References 36 publications

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“…It is an important electron carrier, which has two forms, a reduced state containing divalent ferrous iron, and an oxidation state containing ferric iron [5,6]. Cytochrome c can be transformed into each other in these two states, and is a biomacromolecule with both high catalytic and sensory properties, so it can be widely used in sensor research [7,8]. The heme of cytochrome c is its potential active center, but the heme is surrounded by a protein shell, which hinders contact with the outside world.…”

Section: Introductionmentioning

confidence: 99%

Construction of a Biosensor Based on a Combination of Cytochrome c, Graphene, and Gold Nanoparticles

Guo

Wang

Chen

et al. 2018

Sensors

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A biosensor based on a combination of cytochrome c (Cyt c), electrochemical reduced graphene oxides (ERGO), and gold nanoparticles (AuNPs) on a glassy carbon electrode (GCE) was fabricated. The proposed biosensor electrode was denoted as GCE/ERGO-Nafion/AuNPs/Cyt c/Nafion, where ERGO-Nafion was deposited by dropping graphene oxides-Nafion mixed droplet first and following electrochemical reduction, AuNPs were directly deposited on the surface of the ERGO-Nafion modified electrode by electrochemical reduction, and other components were deposited by the dropping-dry method. The effect of the deposition amount of AuNPs on direct electrochemistry of Cyt c in the proposed electrode was investigated. The hydrogen peroxide was taken to evaluate the performance of the proposed biosensor. The results showed that the biosensor has great analytical performance, including a high sensitivity, a wide linear range, a low detection limit, and good stability, reproducibility, and reliability.

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Section: Introductionmentioning

confidence: 99%

Construction of a Biosensor Based on a Combination of Cytochrome c, Graphene, and Gold Nanoparticles

Guo

Wang

Chen

et al. 2018

Sensors

View full text Add to dashboard Cite

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Catalytic Surfaces for Electroanalysis

Cox

Kulesza

2009

Encyclopedia of Analytical Chemistry

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In this article, electrochemical determinations based on oxidation or reduction processes that require a catalyst to obtain a current proportional to analyte concentration are described. The scope is restricted to cases where the catalyst is immobilized at the electrode surface. In general, oxidation or reduction of a substance at an electrode surface can be the basis of an analytical method as long as the electron‐transfer reaction occurs in the potential window between redox of the solvent, supporting electrolyte, and/or the electrode material. The need for a catalyst arises because only a small fraction of solutes that are predicted on the basis of standard potentials to undergo redox in an available potential window are electrolyzed in the absence of a catalyst at a sufficient rate to provide an analytically useful current. As described later, the common mode of promotion of the rate of electron transfer is by mediation. A problem that results when immobilized mediators are used is that the potential at which the current is produced is related to the mediator as well as to the analytes; hence, many practical applications of catalytic surfaces involve electrochemical detection after separation by methods such as high‐performance liquid chromatography (HPLC).

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Immobilization of cytochrome c on polyaniline/polypyrrole/carboxylated multi-walled carbon nanotube/glassy carbon electrode: biosensor fabrication

Aghamiri

Mohsen-Nia

Rafiee‐Pour

2019

J Solid State Electrochem

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Fabrication of cytochrome c-poly(5-amino-2-napthalenesulfonic acid) electrode by one step procedure and direct electrochemistry of cytochrome c

Cited by 12 publications

References 36 publications

Construction of a Biosensor Based on a Combination of Cytochrome c, Graphene, and Gold Nanoparticles

Construction of a Biosensor Based on a Combination of Cytochrome c, Graphene, and Gold Nanoparticles

Catalytic Surfaces for Electroanalysis

Immobilization of cytochrome c on polyaniline/polypyrrole/carboxylated multi-walled carbon nanotube/glassy carbon electrode: biosensor fabrication

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