Screen-Printed Electrodes Modified with Carbon Nanomaterials: A Comparison among Carbon Black, Carbon Nanotubes and Graphene

2015 ◽  
Vol 27 (9) ◽  
pp. 2230-2238 ◽  
Author(s):  
Stefano Cinti ◽  
Fabiana Arduini ◽  
Marilena Carbone ◽  
Lucia Sansone ◽  
Ilaria Cacciotti ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Black ◽  
Black Carbon ◽  
Carbon Nanomaterials ◽  
Screen Printed Electrodes ◽  
Screen Printed

Electrospray deposition as a smart technique for laccase immobilisation on carbon black-nanomodified screen-printed electrodes

2020 ◽  
Vol 163 ◽  
pp. 112299 ◽  
Author(s):  
Mattea Carmen Castrovilli ◽  
Paola Bolognesi ◽  
Jacopo Chiarinelli ◽  
Lorenzo Avaldi ◽  
Antonella Cartoni ◽  
...  
Keyword(s):  
Carbon Black ◽  
Electrospray Deposition ◽  
Screen Printed Electrodes ◽  
Screen Printed

Cocoa powder and catechins as natural mediators to modify carbon-black based screen-printed electrodes. Application to free and total glutathione detection in blood

Talanta ◽  
2020 ◽  
Vol 207 ◽  
pp. 120349 ◽  
Author(s):  
Flavio Della Pelle ◽  
Lucas Blandón-Naranjo ◽  
Manuela Alzate ◽  
Michele Del Carlo ◽  
Dario Compagnone
Keyword(s):  
Carbon Black ◽  
Total Glutathione ◽  
Cocoa Powder ◽  
Screen Printed Electrodes ◽  
Modify Carbon ◽  
Screen Printed

Carbon Black-Modified Screen-Printed Electrodes as Electroanalytical Tools

2012 ◽  
Vol 24 (4) ◽  
pp. 743-751 ◽  
Author(s):  
Fabiana Arduini ◽  
Fabio Di Nardo ◽  
Aziz Amine ◽  
Laura Micheli ◽  
Giuseppe Palleschi ◽  
...  
Keyword(s):  
Carbon Black ◽  
Screen Printed Electrodes ◽  
Screen Printed

scholarly journals Electroanalytical and electrocatalytical characteristics of cytochrome P450 3A4 using electrodes modified with nanocomposite carbon nanomaterials

2020 ◽  
Vol 66 (1) ◽  
pp. 64-70 ◽  
Author(s):  
A.V. Kuzikov ◽  
T.V. Bulko ◽  
P.I. Koroleva ◽  
R.A. Masamrekh ◽  
S.S. Babkina ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Cytochrome P450 ◽  
Carbon Nanomaterials ◽  
Electrochemical Analysis ◽  
Heme Iron ◽  
Cytochrome P450 3A4 ◽  
Graphite Electrodes ◽  
Protein Film ◽  
Protein Film Voltammetry ◽  
Screen Printed

The electroanalytical characteristics of recombinant cytochrome P450 3A4 (P450 3A4) immobilized on the surface of screen-printed graphite electrodes modified with multi-walled carbon nanotubes have been studied. The role and the influence of graphite working electrode modification with carbon nanotubes on electroanalytical characteristics of cytochrome P450 3A4 have been demonstrated. The conditions for the immobilization of cytochrome P450 3A4 on the obtained screen-printed graphite electrodes modified with carbon multi-walled nanotubes have been optimized. The electrochemical parameters of the oxidation and reduction of the heme iron of the enzyme have been estimated. The midpoint potential E0′ was -0.35±0.01 V vs Ag/AgCl; the calculated heterogeneous electron transfer rate constant ks, was 0.57±0.04 s-1; the amount of electroactive cytochrome P450 3A4 on the electrode Г0, was determined as (2.6±0.6)⋅10-10 mol/cm2. The functioning mechanism of P450 3A4-based electrochemical sensor followed the “protein film voltammetry”. In order to develop electrochemical analysis of drugs being substrates of that hemoprotein and respective medical biosensors the voltammetric study of catalytic activity of immobilized cytochrome P450 3A4 was carried out. Electrocatalytic properties of cytochrome P450 3A4, immobilized on modified screen-printed graphite electrodes, has been investigated using erythromycin (macrolide antibiotics). It has been shown that the modification of electrodes plays a decisive role for the study of the properties of cytochromes P450 in electrochemical investigations. Smart electrodes can serve as sensors for analytical purposes, as well as electrocatalysts for the study of biotransformation processes and metabolic processes. Electrodes modified with carbon nanomaterials are applicable for analytical purposes in the registration of hemoproteins. Electrodes modified with synthetic membrane-like compounds (e.g. didodecyldimethylammonium bromide) are effective in enzyme-dependent electrocatalysis.

Sign in / Sign up

Export Citation Format

Share Document