CobaltMaghrebV1, PascalFrancis, Corpus, bibRecord, 000111

Electrocatalytic oxidation of thiocholine at chemically modified cobalt hexacyanoferrate screen-printed electrodes

Identifieur interne : 000111 ( PascalFrancis/Corpus ); précédent : 000110; suivant : 000112

Electrocatalytic oxidation of thiocholine at chemically modified cobalt hexacyanoferrate screen-printed electrodes

Auteurs : Fabiana Arduini ; Alessio Cassisi ; Aziz Amine ; Francesco Ricci ; Danila Moscone ; Giuseppe Palleschi

Source :

Journal of electroanalytical chemistry : (1992) [ 1572-6657 ] ; 2009.

RBID : Pascal:09-0184855

Descripteurs français

Pascal (Inist)
- Electrocatalyse, Oxydation, Cobalt Hexacyanoferrate, Electrocatalyseur, Sérigraphie, Electrode, Détecteur électrochimique, Matériau modifié, Sodium Chlorure, Lithium Chlorure, Potassium Chlorure, Solution tampon, Phosphate, Réaction électrochimique, Thiocholine.

English descriptors

KwdEn :
- Buffer solution, Cobalt Hexacyanoferrates, Electrocatalysis, Electrocatalysts, Electrochemical detector, Electrochemical reaction, Electrodes, Lithium Chlorides, Modified material, Oxidation, Phosphates, Potassium Chlorides, Serigraphy, Sodium Chlorides.

Abstract

In this work, cobalt hexacyanoferrate (CoHCF) modified screen-printed electrodes were developed and characterised electrochemically. The effect of different cations was investigated showing a more reversible system with a well-defined peak around +0.35 V vs. Ag/AgCl when Na⁺ was used as cation in the supporting electrolyte. The transfer coefficient (α) and the apparent charge transfer rate constant (k_s) for electron transfer between the electrode and the CoHCF layer was calculated. The electrocatalytic behaviour of CoHCF towards oxidation of enzymatically generated thiocholine was thoroughly investigated. Cyclic voltammetry experiments performed in thiocholine solution showed the classical shape of mediated redox system. The diffusion constant of thiocholine was estimated using chronoamperometry. Also, the catalytic rate constant k of thiocholine at CoHCF-SPE was determined. The current due to thiocholine mediated oxidation was then evaluated in batch amperometric mode at +0.5 V vs. Ag/AgCl obtaining a linear range (5 × 10^-7-1 × 10^-5 mol L^-1) with a low detection limit and a high sensitivity equal to 5 x 10^-7 mol L^-1 and 435 mA mol^-1 L cm^-2, respectively.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

A01	`01`	`1`		`@0 1572-6657`
A03		`1`		`@0 J. electroanal. chem. : (1992)`
A05				`@2 626`
A06				`@2 1-2`
A08	`01`	`1`	`ENG`	`@1 Electrocatalytic oxidation of thiocholine at chemically modified cobalt hexacyanoferrate screen-printed electrodes`
A11	`01`	`1`		`@1 ARDUINI (Fabiana)`
A11	`02`	`1`		`@1 CASSISI (Alessio)`
A11	`03`	`1`		`@1 AMINE (Aziz)`
A11	`04`	`1`		`@1 RICCI (Francesco)`
A11	`05`	`1`		`@1 MOSCONE (Danila)`
A11	`06`	`1`		`@1 PALLESCHI (Giuseppe)`
A14	`01`			`@1 Dipartimento di Scienze e Tecnologie Chimiche, Università di Rama Tor Vergata, Via della Ricerca Scientifica @2 00133 Rome @3 ITA @Z 1 aut. @Z 2 aut. @Z 4 aut. @Z 5 aut. @Z 6 aut.`
A14	`02`			`@1 Consorzio Inteniniversitario Biostrutture e Biosistemi "INBB", Viale Medaglie d'Oro @2 Rome @3 ITA @Z 1 aut. @Z 2 aut. @Z 4 aut. @Z 5 aut. @Z 6 aut.`
A14	`03`			`@1 Faculté de Sciences et Techniques de Mohammadia, B.P. 146 @2 Mohammadia @3 MAR @Z 3 aut.`
A20				`@1 66-74`
A21				`@1 2009`
A23	`01`			`@0 ENG`
A43	`01`			`@1 INIST @2 1150 @5 354000184223950100`
A44				`@0 0000 @1 © 2009 INIST-CNRS. All rights reserved.`
A45				`@0 40 ref.`
A47	`01`	`1`		`@0 09-0184855`
A60				`@1 P`
A61				`@0 A`
A64	`01`	`1`		`@0 Journal of electroanalytical chemistry : (1992)`
A66	`01`			`@0 NLD`
C01	`01`		`ENG`	@0 In this work, cobalt hexacyanoferrate (CoHCF) modified screen-printed electrodes were developed and characterised electrochemically. The effect of different cations was investigated showing a more reversible system with a well-defined peak around +0.35 V vs. Ag/AgCl when Na⁺ was used as cation in the supporting electrolyte. The transfer coefficient (α) and the apparent charge transfer rate constant (k_s) for electron transfer between the electrode and the CoHCF layer was calculated. The electrocatalytic behaviour of CoHCF towards oxidation of enzymatically generated thiocholine was thoroughly investigated. Cyclic voltammetry experiments performed in thiocholine solution showed the classical shape of mediated redox system. The diffusion constant of thiocholine was estimated using chronoamperometry. Also, the catalytic rate constant k of thiocholine at CoHCF-SPE was determined. The current due to thiocholine mediated oxidation was then evaluated in batch amperometric mode at +0.5 V vs. Ag/AgCl obtaining a linear range (5 × 10^-7-1 × 10^-5 mol L^-1) with a low detection limit and a high sensitivity equal to 5 x 10^-7 mol L^-1 and 435 mA mol^-1 L cm^-2, respectively.
C02	`01`	`X`		`@0 001C04E`
C03	`01`	`X`	`FRE`	`@0 Electrocatalyse @5 01`
C03	`01`	`X`	`ENG`	`@0 Electrocatalysis @5 01`
C03	`01`	`X`	`SPA`	`@0 Electrocatálisis @5 01`
C03	`02`	`X`	`FRE`	`@0 Oxydation @5 02`
C03	`02`	`X`	`ENG`	`@0 Oxidation @5 02`
C03	`02`	`X`	`SPA`	`@0 Oxidación @5 02`
C03	`03`	`X`	`FRE`	`@0 Cobalt Hexacyanoferrate @2 NC @2 NA @5 03`
C03	`03`	`X`	`ENG`	`@0 Cobalt Hexacyanoferrates @2 NC @2 NA @5 03`
C03	`03`	`X`	`SPA`	`@0 Cobalto Hexacianoferrato @2 NC @2 NA @5 03`
C03	`04`	`3`	`FRE`	`@0 Electrocatalyseur @5 04`
C03	`04`	`3`	`ENG`	`@0 Electrocatalysts @5 04`
C03	`05`	`X`	`FRE`	`@0 Sérigraphie @5 05`
C03	`05`	`X`	`ENG`	`@0 Serigraphy @5 05`
C03	`05`	`X`	`SPA`	`@0 Serigrafía @5 05`
C03	`06`	`X`	`FRE`	`@0 Electrode @5 06`
C03	`06`	`X`	`ENG`	`@0 Electrodes @5 06`
C03	`06`	`X`	`SPA`	`@0 Electrodo @5 06`
C03	`07`	`X`	`FRE`	`@0 Détecteur électrochimique @5 07`
C03	`07`	`X`	`ENG`	`@0 Electrochemical detector @5 07`
C03	`07`	`X`	`SPA`	`@0 Detector electroquímico @5 07`
C03	`08`	`X`	`FRE`	`@0 Matériau modifié @5 08`
C03	`08`	`X`	`ENG`	`@0 Modified material @5 08`
C03	`08`	`X`	`SPA`	`@0 Material modificado @5 08`
C03	`09`	`X`	`FRE`	`@0 Sodium Chlorure @2 NC @2 NA @5 09`
C03	`09`	`X`	`ENG`	`@0 Sodium Chlorides @2 NC @2 NA @5 09`
C03	`09`	`X`	`SPA`	`@0 Sodio Cloruro @2 NC @2 NA @5 09`
C03	`10`	`X`	`FRE`	`@0 Lithium Chlorure @2 NC @2 NA @5 10`
C03	`10`	`X`	`ENG`	`@0 Lithium Chlorides @2 NC @2 NA @5 10`
C03	`10`	`X`	`SPA`	`@0 Litio Cloruro @2 NC @2 NA @5 10`
C03	`11`	`X`	`FRE`	`@0 Potassium Chlorure @2 NC @2 FR @2 NA @5 11`
C03	`11`	`X`	`ENG`	`@0 Potassium Chlorides @2 NC @2 FR @2 NA @5 11`
C03	`11`	`X`	`SPA`	`@0 Potasio Cloruro @2 NC @2 FR @2 NA @5 11`
C03	`12`	`X`	`FRE`	`@0 Solution tampon @5 12`
C03	`12`	`X`	`ENG`	`@0 Buffer solution @5 12`
C03	`12`	`X`	`SPA`	`@0 Solución de amortiguación @5 12`
C03	`13`	`X`	`FRE`	`@0 Phosphate @2 NA @5 13`
C03	`13`	`X`	`ENG`	`@0 Phosphates @2 NA @5 13`
C03	`13`	`X`	`SPA`	`@0 Fosfato @2 NA @5 13`
C03	`14`	`X`	`FRE`	`@0 Réaction électrochimique @5 32`
C03	`14`	`X`	`ENG`	`@0 Electrochemical reaction @5 32`
C03	`14`	`X`	`SPA`	`@0 Reacción electroquímica @5 32`
C03	`15`	`X`	`FRE`	`@0 Thiocholine @2 NK @4 INC @5 76`
N21				`@1 138`

Format Inist (serveur)

NO :	PASCAL 09-0184855 INIST
ET :	Electrocatalytic oxidation of thiocholine at chemically modified cobalt hexacyanoferrate screen-printed electrodes
AU :	ARDUINI (Fabiana); CASSISI (Alessio); AMINE (Aziz); RICCI (Francesco); MOSCONE (Danila); PALLESCHI (Giuseppe)
AF :	Dipartimento di Scienze e Tecnologie Chimiche, Università di Rama Tor Vergata, Via della Ricerca Scientifica/00133 Rome/Italie (1 aut., 2 aut., 4 aut., 5 aut., 6 aut.); Consorzio Inteniniversitario Biostrutture e Biosistemi "INBB", Viale Medaglie d'Oro/Rome/Italie (1 aut., 2 aut., 4 aut., 5 aut., 6 aut.); Faculté de Sciences et Techniques de Mohammadia, B.P. 146/Mohammadia/Maroc (3 aut.)
DT :	Publication en série; Niveau analytique
SO :	Journal of electroanalytical chemistry : (1992); ISSN 1572-6657; Pays-Bas; Da. 2009; Vol. 626; No. 1-2; Pp. 66-74; Bibl. 40 ref.
LA :	Anglais
EA :	In this work, cobalt hexacyanoferrate (CoHCF) modified screen-printed electrodes were developed and characterised electrochemically. The effect of different cations was investigated showing a more reversible system with a well-defined peak around +0.35 V vs. Ag/AgCl when Na⁺ was used as cation in the supporting electrolyte. The transfer coefficient (α) and the apparent charge transfer rate constant (k_s) for electron transfer between the electrode and the CoHCF layer was calculated. The electrocatalytic behaviour of CoHCF towards oxidation of enzymatically generated thiocholine was thoroughly investigated. Cyclic voltammetry experiments performed in thiocholine solution showed the classical shape of mediated redox system. The diffusion constant of thiocholine was estimated using chronoamperometry. Also, the catalytic rate constant k of thiocholine at CoHCF-SPE was determined. The current due to thiocholine mediated oxidation was then evaluated in batch amperometric mode at +0.5 V vs. Ag/AgCl obtaining a linear range (5 × 10^-7-1 × 10^-5 mol L^-1) with a low detection limit and a high sensitivity equal to 5 x 10^-7 mol L^-1 and 435 mA mol^-1 L cm^-2, respectively.
CC :	001C04E
FD :	Electrocatalyse; Oxydation; Cobalt Hexacyanoferrate; Electrocatalyseur; Sérigraphie; Electrode; Détecteur électrochimique; Matériau modifié; Sodium Chlorure; Lithium Chlorure; Potassium Chlorure; Solution tampon; Phosphate; Réaction électrochimique; Thiocholine
ED :	Electrocatalysis; Oxidation; Cobalt Hexacyanoferrates; Electrocatalysts; Serigraphy; Electrodes; Electrochemical detector; Modified material; Sodium Chlorides; Lithium Chlorides; Potassium Chlorides; Buffer solution; Phosphates; Electrochemical reaction
SD :	Electrocatálisis; Oxidación; Cobalto Hexacianoferrato; Serigrafía; Electrodo; Detector electroquímico; Material modificado; Sodio Cloruro; Litio Cloruro; Potasio Cloruro; Solución de amortiguación; Fosfato; Reacción electroquímica
LO :	INIST-1150.354000184223950100
ID :	09-0184855

Links to Exploration step

Pascal:09-0184855

Le document en format XML

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</analytic>
<series><title level="j" type="main">Journal of electroanalytical chemistry : (1992)</title>
<title level="j" type="abbreviated">J. electroanal. chem. : (1992)</title>
<idno type="ISSN">1572-6657</idno>
<imprint><date when="2009">2009</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
<seriesStmt><title level="j" type="main">Journal of electroanalytical chemistry : (1992)</title>
<title level="j" type="abbreviated">J. electroanal. chem. : (1992)</title>
<idno type="ISSN">1572-6657</idno>
</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Buffer solution</term>
<term>Cobalt Hexacyanoferrates</term>
<term>Electrocatalysis</term>
<term>Electrocatalysts</term>
<term>Electrochemical detector</term>
<term>Electrochemical reaction</term>
<term>Electrodes</term>
<term>Lithium Chlorides</term>
<term>Modified material</term>
<term>Oxidation</term>
<term>Phosphates</term>
<term>Potassium Chlorides</term>
<term>Serigraphy</term>
<term>Sodium Chlorides</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Electrocatalyse</term>
<term>Oxydation</term>
<term>Cobalt Hexacyanoferrate</term>
<term>Electrocatalyseur</term>
<term>Sérigraphie</term>
<term>Electrode</term>
<term>Détecteur électrochimique</term>
<term>Matériau modifié</term>
<term>Sodium Chlorure</term>
<term>Lithium Chlorure</term>
<term>Potassium Chlorure</term>
<term>Solution tampon</term>
<term>Phosphate</term>
<term>Réaction électrochimique</term>
<term>Thiocholine</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">In this work, cobalt hexacyanoferrate (CoHCF) modified screen-printed electrodes were developed and characterised electrochemically. The effect of different cations was investigated showing a more reversible system with a well-defined peak around +0.35 V vs. Ag/AgCl when Na<sup>+</sup>
 was used as cation in the supporting electrolyte. The transfer coefficient (α) and the apparent charge transfer rate constant (k<sub>s</sub>
) for electron transfer between the electrode and the CoHCF layer was calculated. The electrocatalytic behaviour of CoHCF towards oxidation of enzymatically generated thiocholine was thoroughly investigated. Cyclic voltammetry experiments performed in thiocholine solution showed the classical shape of mediated redox system. The diffusion constant of thiocholine was estimated using chronoamperometry. Also, the catalytic rate constant k of thiocholine at CoHCF-SPE was determined. The current due to thiocholine mediated oxidation was then evaluated in batch amperometric mode at +0.5 V vs. Ag/AgCl obtaining a linear range (5 × 10<sup>-7</sup>
-1 × 10<sup>-5</sup>
 mol L<sup>-1</sup>
) with a low detection limit and a high sensitivity equal to 5 x 10<sup>-7</sup>
 mol L<sup>-1</sup>
 and 435 mA mol<sup>-1</sup>
 L cm<sup>-2</sup>
, respectively.</div>
</front>
</TEI>
<inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>1572-6657</s0>
</fA01>
<fA03 i2="1"><s0>J. electroanal. chem. : (1992)</s0>
</fA03>
<fA05><s2>626</s2>
</fA05>
<fA06><s2>1-2</s2>
</fA06>
<fA08 i1="01" i2="1" l="ENG"><s1>Electrocatalytic oxidation of thiocholine at chemically modified cobalt hexacyanoferrate screen-printed electrodes</s1>
</fA08>
<fA11 i1="01" i2="1"><s1>ARDUINI (Fabiana)</s1>
</fA11>
<fA11 i1="02" i2="1"><s1>CASSISI (Alessio)</s1>
</fA11>
<fA11 i1="03" i2="1"><s1>AMINE (Aziz)</s1>
</fA11>
<fA11 i1="04" i2="1"><s1>RICCI (Francesco)</s1>
</fA11>
<fA11 i1="05" i2="1"><s1>MOSCONE (Danila)</s1>
</fA11>
<fA11 i1="06" i2="1"><s1>PALLESCHI (Giuseppe)</s1>
</fA11>
<fA14 i1="01"><s1>Dipartimento di Scienze e Tecnologie Chimiche, Università di Rama Tor Vergata, Via della Ricerca Scientifica</s1>
<s2>00133 Rome</s2>
<s3>ITA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
</fA14>
<fA14 i1="02"><s1>Consorzio Inteniniversitario Biostrutture e Biosistemi "INBB", Viale Medaglie d'Oro</s1>
<s2>Rome</s2>
<s3>ITA</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>4 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
</fA14>
<fA14 i1="03"><s1>Faculté de Sciences et Techniques de Mohammadia, B.P. 146</s1>
<s2>Mohammadia</s2>
<s3>MAR</s3>
<sZ>3 aut.</sZ>
</fA14>
<fA20><s1>66-74</s1>
</fA20>
<fA21><s1>2009</s1>
</fA21>
<fA23 i1="01"><s0>ENG</s0>
</fA23>
<fA43 i1="01"><s1>INIST</s1>
<s2>1150</s2>
<s5>354000184223950100</s5>
</fA43>
<fA44><s0>0000</s0>
<s1>© 2009 INIST-CNRS. All rights reserved.</s1>
</fA44>
<fA45><s0>40 ref.</s0>
</fA45>
<fA47 i1="01" i2="1"><s0>09-0184855</s0>
</fA47>
<fA60><s1>P</s1>
</fA60>
<fA61><s0>A</s0>
</fA61>
<fA64 i1="01" i2="1"><s0>Journal of electroanalytical chemistry : (1992)</s0>
</fA64>
<fA66 i1="01"><s0>NLD</s0>
</fA66>
<fC01 i1="01" l="ENG"><s0>In this work, cobalt hexacyanoferrate (CoHCF) modified screen-printed electrodes were developed and characterised electrochemically. The effect of different cations was investigated showing a more reversible system with a well-defined peak around +0.35 V vs. Ag/AgCl when Na<sup>+</sup>
 was used as cation in the supporting electrolyte. The transfer coefficient (α) and the apparent charge transfer rate constant (k<sub>s</sub>
) for electron transfer between the electrode and the CoHCF layer was calculated. The electrocatalytic behaviour of CoHCF towards oxidation of enzymatically generated thiocholine was thoroughly investigated. Cyclic voltammetry experiments performed in thiocholine solution showed the classical shape of mediated redox system. The diffusion constant of thiocholine was estimated using chronoamperometry. Also, the catalytic rate constant k of thiocholine at CoHCF-SPE was determined. The current due to thiocholine mediated oxidation was then evaluated in batch amperometric mode at +0.5 V vs. Ag/AgCl obtaining a linear range (5 × 10<sup>-7</sup>
-1 × 10<sup>-5</sup>
 mol L<sup>-1</sup>
) with a low detection limit and a high sensitivity equal to 5 x 10<sup>-7</sup>
 mol L<sup>-1</sup>
 and 435 mA mol<sup>-1</sup>
 L cm<sup>-2</sup>
, respectively.</s0>
</fC01>
<fC02 i1="01" i2="X"><s0>001C04E</s0>
</fC02>
<fC03 i1="01" i2="X" l="FRE"><s0>Electrocatalyse</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="ENG"><s0>Electrocatalysis</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="SPA"><s0>Electrocatálisis</s0>
<s5>01</s5>
</fC03>
<fC03 i1="02" i2="X" l="FRE"><s0>Oxydation</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="X" l="ENG"><s0>Oxidation</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="X" l="SPA"><s0>Oxidación</s0>
<s5>02</s5>
</fC03>
<fC03 i1="03" i2="X" l="FRE"><s0>Cobalt Hexacyanoferrate</s0>
<s2>NC</s2>
<s2>NA</s2>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="ENG"><s0>Cobalt Hexacyanoferrates</s0>
<s2>NC</s2>
<s2>NA</s2>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="X" l="SPA"><s0>Cobalto Hexacianoferrato</s0>
<s2>NC</s2>
<s2>NA</s2>
<s5>03</s5>
</fC03>
<fC03 i1="04" i2="3" l="FRE"><s0>Electrocatalyseur</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="3" l="ENG"><s0>Electrocatalysts</s0>
<s5>04</s5>
</fC03>
<fC03 i1="05" i2="X" l="FRE"><s0>Sérigraphie</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="X" l="ENG"><s0>Serigraphy</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="X" l="SPA"><s0>Serigrafía</s0>
<s5>05</s5>
</fC03>
<fC03 i1="06" i2="X" l="FRE"><s0>Electrode</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="X" l="ENG"><s0>Electrodes</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="X" l="SPA"><s0>Electrodo</s0>
<s5>06</s5>
</fC03>
<fC03 i1="07" i2="X" l="FRE"><s0>Détecteur électrochimique</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="X" l="ENG"><s0>Electrochemical detector</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="X" l="SPA"><s0>Detector electroquímico</s0>
<s5>07</s5>
</fC03>
<fC03 i1="08" i2="X" l="FRE"><s0>Matériau modifié</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="X" l="ENG"><s0>Modified material</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="X" l="SPA"><s0>Material modificado</s0>
<s5>08</s5>
</fC03>
<fC03 i1="09" i2="X" l="FRE"><s0>Sodium Chlorure</s0>
<s2>NC</s2>
<s2>NA</s2>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="X" l="ENG"><s0>Sodium Chlorides</s0>
<s2>NC</s2>
<s2>NA</s2>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="X" l="SPA"><s0>Sodio Cloruro</s0>
<s2>NC</s2>
<s2>NA</s2>
<s5>09</s5>
</fC03>
<fC03 i1="10" i2="X" l="FRE"><s0>Lithium Chlorure</s0>
<s2>NC</s2>
<s2>NA</s2>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="X" l="ENG"><s0>Lithium Chlorides</s0>
<s2>NC</s2>
<s2>NA</s2>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="X" l="SPA"><s0>Litio Cloruro</s0>
<s2>NC</s2>
<s2>NA</s2>
<s5>10</s5>
</fC03>
<fC03 i1="11" i2="X" l="FRE"><s0>Potassium Chlorure</s0>
<s2>NC</s2>
<s2>FR</s2>
<s2>NA</s2>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="X" l="ENG"><s0>Potassium Chlorides</s0>
<s2>NC</s2>
<s2>FR</s2>
<s2>NA</s2>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="X" l="SPA"><s0>Potasio Cloruro</s0>
<s2>NC</s2>
<s2>FR</s2>
<s2>NA</s2>
<s5>11</s5>
</fC03>
<fC03 i1="12" i2="X" l="FRE"><s0>Solution tampon</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="X" l="ENG"><s0>Buffer solution</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="X" l="SPA"><s0>Solución de amortiguación</s0>
<s5>12</s5>
</fC03>
<fC03 i1="13" i2="X" l="FRE"><s0>Phosphate</s0>
<s2>NA</s2>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="X" l="ENG"><s0>Phosphates</s0>
<s2>NA</s2>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="X" l="SPA"><s0>Fosfato</s0>
<s2>NA</s2>
<s5>13</s5>
</fC03>
<fC03 i1="14" i2="X" l="FRE"><s0>Réaction électrochimique</s0>
<s5>32</s5>
</fC03>
<fC03 i1="14" i2="X" l="ENG"><s0>Electrochemical reaction</s0>
<s5>32</s5>
</fC03>
<fC03 i1="14" i2="X" l="SPA"><s0>Reacción electroquímica</s0>
<s5>32</s5>
</fC03>
<fC03 i1="15" i2="X" l="FRE"><s0>Thiocholine</s0>
<s2>NK</s2>
<s4>INC</s4>
<s5>76</s5>
</fC03>
<fN21><s1>138</s1>
</fN21>
</pA>
</standard>
<server><NO>PASCAL 09-0184855 INIST</NO>
<ET>Electrocatalytic oxidation of thiocholine at chemically modified cobalt hexacyanoferrate screen-printed electrodes</ET>
<AU>ARDUINI (Fabiana); CASSISI (Alessio); AMINE (Aziz); RICCI (Francesco); MOSCONE (Danila); PALLESCHI (Giuseppe)</AU>
<AF>Dipartimento di Scienze e Tecnologie Chimiche, Università di Rama Tor Vergata, Via della Ricerca Scientifica/00133 Rome/Italie (1 aut., 2 aut., 4 aut., 5 aut., 6 aut.); Consorzio Inteniniversitario Biostrutture e Biosistemi "INBB", Viale Medaglie d'Oro/Rome/Italie (1 aut., 2 aut., 4 aut., 5 aut., 6 aut.); Faculté de Sciences et Techniques de Mohammadia, B.P. 146/Mohammadia/Maroc (3 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>Journal of electroanalytical chemistry : (1992); ISSN 1572-6657; Pays-Bas; Da. 2009; Vol. 626; No. 1-2; Pp. 66-74; Bibl. 40 ref.</SO>
<LA>Anglais</LA>
<EA>In this work, cobalt hexacyanoferrate (CoHCF) modified screen-printed electrodes were developed and characterised electrochemically. The effect of different cations was investigated showing a more reversible system with a well-defined peak around +0.35 V vs. Ag/AgCl when Na<sup>+</sup>
 was used as cation in the supporting electrolyte. The transfer coefficient (α) and the apparent charge transfer rate constant (k<sub>s</sub>
) for electron transfer between the electrode and the CoHCF layer was calculated. The electrocatalytic behaviour of CoHCF towards oxidation of enzymatically generated thiocholine was thoroughly investigated. Cyclic voltammetry experiments performed in thiocholine solution showed the classical shape of mediated redox system. The diffusion constant of thiocholine was estimated using chronoamperometry. Also, the catalytic rate constant k of thiocholine at CoHCF-SPE was determined. The current due to thiocholine mediated oxidation was then evaluated in batch amperometric mode at +0.5 V vs. Ag/AgCl obtaining a linear range (5 × 10<sup>-7</sup>
-1 × 10<sup>-5</sup>
 mol L<sup>-1</sup>
) with a low detection limit and a high sensitivity equal to 5 x 10<sup>-7</sup>
 mol L<sup>-1</sup>
 and 435 mA mol<sup>-1</sup>
 L cm<sup>-2</sup>
, respectively.</EA>
<CC>001C04E</CC>
<FD>Electrocatalyse; Oxydation; Cobalt Hexacyanoferrate; Electrocatalyseur; Sérigraphie; Electrode; Détecteur électrochimique; Matériau modifié; Sodium Chlorure; Lithium Chlorure; Potassium Chlorure; Solution tampon; Phosphate; Réaction électrochimique; Thiocholine</FD>
<ED>Electrocatalysis; Oxidation; Cobalt Hexacyanoferrates; Electrocatalysts; Serigraphy; Electrodes; Electrochemical detector; Modified material; Sodium Chlorides; Lithium Chlorides; Potassium Chlorides; Buffer solution; Phosphates; Electrochemical reaction</ED>
<SD>Electrocatálisis; Oxidación; Cobalto Hexacianoferrato; Serigrafía; Electrodo; Detector electroquímico; Material modificado; Sodio Cloruro; Litio Cloruro; Potasio Cloruro; Solución de amortiguación; Fosfato; Reacción electroquímica</SD>
<LO>INIST-1150.354000184223950100</LO>
<ID>09-0184855</ID>
</server>
</inist>
</record>

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Electrocatalytic oxidation of thiocholine at chemically modified cobalt hexacyanoferrate screen-printed electrodes

Electrocatalytic oxidation of thiocholine at chemically modified cobalt hexacyanoferrate screen-printed electrodes

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