Square-Wave Voltammetry of the Molybdenum-1,10 Phenanthroline-Fulvic Acids Complex: Redox Kinetics Measurements
The reduction process of molybdenum in the presence of fulvic acids and phenanthroline was investigated by square‐wave voltammetry (SWV). The mixed‐ligand complex of molybdenum exhibits a pronounced tendency to adsorb onto the mercury electrode surface. The electrode reaction proceeds as a surface p...
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| Veröffentlicht in: | Electroanalysis (New York, N.Y.) N.Y.), 2003-04, Vol.15 (4), p.270-277 |
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| container_title | Electroanalysis (New York, N.Y.) |
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| creator | Quentel, François Mirčeski, Valentin Laouenan, André Elleouet, Catherine Madec, Christian Louis |
| description | The reduction process of molybdenum in the presence of fulvic acids and phenanthroline was investigated by square‐wave voltammetry (SWV). The mixed‐ligand complex of molybdenum exhibits a pronounced tendency to adsorb onto the mercury electrode surface. The electrode reaction proceeds as a surface process in which both components of the redox couple are firmly confined to the electrode surface. The kinetics of the electrode reaction is studied utilizing the properties of “split SW peaks” and “quasireversible maximum”. The kinetic parameters obtained with two different square‐wave voltammetric methods are in good agreement. In 0.5 mol/L NaCl solution with pH 2.5 the kinetic parameters are: standard rate constant ks=8±2 s−1, cathodic electron transfer coefficient α=0.41±0.05, and number of exchanged electrons n=2. The SW kinetic measurements are confirmed by cyclic voltammetric method. |
| doi_str_mv | 10.1002/elan.200390034 |
| format | Article |
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The mixed‐ligand complex of molybdenum exhibits a pronounced tendency to adsorb onto the mercury electrode surface. The electrode reaction proceeds as a surface process in which both components of the redox couple are firmly confined to the electrode surface. The kinetics of the electrode reaction is studied utilizing the properties of “split SW peaks” and “quasireversible maximum”. The kinetic parameters obtained with two different square‐wave voltammetric methods are in good agreement. In 0.5 mol/L NaCl solution with pH 2.5 the kinetic parameters are: standard rate constant ks=8±2 s−1, cathodic electron transfer coefficient α=0.41±0.05, and number of exchanged electrons n=2. The SW kinetic measurements are confirmed by cyclic voltammetric method.</description><identifier>ISSN: 1040-0397</identifier><identifier>EISSN: 1521-4109</identifier><identifier>DOI: 10.1002/elan.200390034</identifier><language>eng</language><publisher>Weinheim: WILEY-VCH Verlag</publisher><subject>1,10‐Phenanthroline ; 10-Phenanthroline ; Adsorptive square-wave voltammetry ; Chemical Sciences ; Fulvic acids ; Mechanistic studies ; Molybdenum</subject><ispartof>Electroanalysis (New York, N.Y.), 2003-04, Vol.15 (4), p.270-277</ispartof><rights>2003 WILEY‐VCH Verlag GmbH & Co. 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The SW kinetic measurements are confirmed by cyclic voltammetric method.</description><subject>1,10‐Phenanthroline</subject><subject>10-Phenanthroline</subject><subject>Adsorptive square-wave voltammetry</subject><subject>Chemical Sciences</subject><subject>Fulvic acids</subject><subject>Mechanistic studies</subject><subject>Molybdenum</subject><issn>1040-0397</issn><issn>1521-4109</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><recordid>eNqFkE1rGzEQhpfSQNMk1551LVTO6MP66M2YOClZp6UNMfQi5PUs3la7SqS1a__7rHExvfUwzCA9z8C8RfGBwYgB8GsMvhtxAGGHkm-KczbmjEoG9u0wgwQ6fOl3xfucfwGAVdKeF_HHy8YnpAu_RfIUQ-_bFvu0J7Em_RrJPIb9coXdpqXsEwPybY2d7_p1iqHpkM42YdtUZFI1q0ymsX0OuPtMvuMq7sj9APRNlckcfd4kbLHr82VxVvuQ8epvvygeZzeP0ztafr39Mp2UtBJjK6mWkltlJNNaG1BghRTcm6Uyig_nWa5XRpkalVQaBKvUEmvDx7LGmtsliovi43Ht2gf3nJrWp72LvnF3k9Id3oBpJYxlWzawoyNbpZhzwvokMHCHZN0hWXdKdhDsUfjTBNz_h3Y35eThX5ce3Sb3uDu5Pv12Sgs9douHWzf_aRazki3cvXgFcuuK4w</recordid><startdate>200304</startdate><enddate>200304</enddate><creator>Quentel, François</creator><creator>Mirčeski, Valentin</creator><creator>Laouenan, André</creator><creator>Elleouet, Catherine</creator><creator>Madec, Christian Louis</creator><general>WILEY-VCH Verlag</general><general>WILEY‐VCH Verlag</general><general>Wiley-VCH Verlag</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>1XC</scope></search><sort><creationdate>200304</creationdate><title>Square-Wave Voltammetry of the Molybdenum-1,10 Phenanthroline-Fulvic Acids Complex: Redox Kinetics Measurements</title><author>Quentel, François ; Mirčeski, Valentin ; Laouenan, André ; Elleouet, Catherine ; Madec, Christian Louis</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3594-744296841777806093432a8b6862900927d868fe6467031c6bef8254fef29be3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>1,10‐Phenanthroline</topic><topic>10-Phenanthroline</topic><topic>Adsorptive square-wave voltammetry</topic><topic>Chemical Sciences</topic><topic>Fulvic acids</topic><topic>Mechanistic studies</topic><topic>Molybdenum</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Quentel, François</creatorcontrib><creatorcontrib>Mirčeski, Valentin</creatorcontrib><creatorcontrib>Laouenan, André</creatorcontrib><creatorcontrib>Elleouet, Catherine</creatorcontrib><creatorcontrib>Madec, Christian Louis</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>Hyper Article en Ligne (HAL)</collection><jtitle>Electroanalysis (New York, N.Y.)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Quentel, François</au><au>Mirčeski, Valentin</au><au>Laouenan, André</au><au>Elleouet, Catherine</au><au>Madec, Christian Louis</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Square-Wave Voltammetry of the Molybdenum-1,10 Phenanthroline-Fulvic Acids Complex: Redox Kinetics Measurements</atitle><jtitle>Electroanalysis (New York, N.Y.)</jtitle><addtitle>Electroanalysis</addtitle><date>2003-04</date><risdate>2003</risdate><volume>15</volume><issue>4</issue><spage>270</spage><epage>277</epage><pages>270-277</pages><issn>1040-0397</issn><eissn>1521-4109</eissn><abstract>The reduction process of molybdenum in the presence of fulvic acids and phenanthroline was investigated by square‐wave voltammetry (SWV). The mixed‐ligand complex of molybdenum exhibits a pronounced tendency to adsorb onto the mercury electrode surface. The electrode reaction proceeds as a surface process in which both components of the redox couple are firmly confined to the electrode surface. The kinetics of the electrode reaction is studied utilizing the properties of “split SW peaks” and “quasireversible maximum”. The kinetic parameters obtained with two different square‐wave voltammetric methods are in good agreement. In 0.5 mol/L NaCl solution with pH 2.5 the kinetic parameters are: standard rate constant ks=8±2 s−1, cathodic electron transfer coefficient α=0.41±0.05, and number of exchanged electrons n=2. The SW kinetic measurements are confirmed by cyclic voltammetric method.</abstract><cop>Weinheim</cop><pub>WILEY-VCH Verlag</pub><doi>10.1002/elan.200390034</doi><tpages>8</tpages></addata></record> |
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| subjects | 1,10‐Phenanthroline 10-Phenanthroline Adsorptive square-wave voltammetry Chemical Sciences Fulvic acids Mechanistic studies Molybdenum |
| title | Square-Wave Voltammetry of the Molybdenum-1,10 Phenanthroline-Fulvic Acids Complex: Redox Kinetics Measurements |
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