ADSORPTION WAVE OF VANADIUM COMPLEX WITH 2,3–DIHYDROXYBENZALDEHYDE
The polarographic behavior of the complex formed by V(V) and 2,3–dihydroxybenzaldehyde (2,3–DHBA) in the solution containing acetate buffer (pH 5,2) has been investigated. By means of a.c. polarography, chronovoltammetry and other techniques, it has been shown that the electrode process is complicat...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Academy of Sciences of Moldova, Institute of Chemistry
2009-12-01
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| Series: | Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry |
| Subjects: | |
| Online Access: | http://www.cjm.asm.md/sites/default/files/article_files/003%20Cazac_0.pdf |
| _version_ | 1818667085233913856 |
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| author | Ludmila Kiriyak Natalia Cecoi Tatiana Cazac Mihail Revenco |
| author_facet | Ludmila Kiriyak Natalia Cecoi Tatiana Cazac Mihail Revenco |
| author_sort | Ludmila Kiriyak |
| collection | DOAJ |
| description | The polarographic behavior of the complex formed by V(V) and 2,3–dihydroxybenzaldehyde (2,3–DHBA) in the solution containing acetate buffer (pH 5,2) has been investigated. By means of a.c. polarography, chronovoltammetry and other techniques, it has been shown that the electrode process is complicated by the adsorption of 2,3-DHBA and its vanadium complex. The kinetic and adsorption parameters of the electrode process have been determined: adsorption equilibrium constant B= 1,32⋅105 mol-1⋅dm3, the attraction constant γ = 1,2, the maximum surface concentration Гmax = 9,10⋅10-11 mol⋅ cm-2; the share of the electrode surface occupied by one particle of the adsorbed complex S = 1,81 nm2 and the free adsorption energy ΔG = - 39,1 kJ· mol-1. |
| first_indexed | 2024-12-17T06:14:49Z |
| format | Article |
| id | doaj.art-fc99243a1c2f4037a0c4553a39161634 |
| institution | Directory Open Access Journal |
| issn | 1857-1727 2345-1688 |
| language | English |
| last_indexed | 2024-12-17T06:14:49Z |
| publishDate | 2009-12-01 |
| publisher | Academy of Sciences of Moldova, Institute of Chemistry |
| record_format | Article |
| series | Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry |
| spelling | doaj.art-fc99243a1c2f4037a0c4553a391616342022-12-21T22:00:32ZengAcademy of Sciences of Moldova, Institute of ChemistryChemistry Journal of Moldova: General, Industrial and Ecological Chemistry1857-17272345-16882009-12-01422427ADSORPTION WAVE OF VANADIUM COMPLEX WITH 2,3–DIHYDROXYBENZALDEHYDELudmila Kiriyak0Natalia Cecoi1Tatiana Cazac2Mihail Revenco3Institute of Chemistry of Academy of Sciences of MoldovaInstitute of Chemistry of Academy of Sciences of MoldovaInstitute of Chemistry of Academy of Sciences of MoldovaMoldova State UniversityThe polarographic behavior of the complex formed by V(V) and 2,3–dihydroxybenzaldehyde (2,3–DHBA) in the solution containing acetate buffer (pH 5,2) has been investigated. By means of a.c. polarography, chronovoltammetry and other techniques, it has been shown that the electrode process is complicated by the adsorption of 2,3-DHBA and its vanadium complex. The kinetic and adsorption parameters of the electrode process have been determined: adsorption equilibrium constant B= 1,32⋅105 mol-1⋅dm3, the attraction constant γ = 1,2, the maximum surface concentration Гmax = 9,10⋅10-11 mol⋅ cm-2; the share of the electrode surface occupied by one particle of the adsorbed complex S = 1,81 nm2 and the free adsorption energy ΔG = - 39,1 kJ· mol-1.http://www.cjm.asm.md/sites/default/files/article_files/003%20Cazac_0.pdfVoltammetry2vanadium |
| spellingShingle | Ludmila Kiriyak Natalia Cecoi Tatiana Cazac Mihail Revenco ADSORPTION WAVE OF VANADIUM COMPLEX WITH 2,3–DIHYDROXYBENZALDEHYDE Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry Voltammetry 2 vanadium |
| title | ADSORPTION WAVE OF VANADIUM COMPLEX WITH 2,3–DIHYDROXYBENZALDEHYDE |
| title_full | ADSORPTION WAVE OF VANADIUM COMPLEX WITH 2,3–DIHYDROXYBENZALDEHYDE |
| title_fullStr | ADSORPTION WAVE OF VANADIUM COMPLEX WITH 2,3–DIHYDROXYBENZALDEHYDE |
| title_full_unstemmed | ADSORPTION WAVE OF VANADIUM COMPLEX WITH 2,3–DIHYDROXYBENZALDEHYDE |
| title_short | ADSORPTION WAVE OF VANADIUM COMPLEX WITH 2,3–DIHYDROXYBENZALDEHYDE |
| title_sort | adsorption wave of vanadium complex with 2 3 dihydroxybenzaldehyde |
| topic | Voltammetry 2 vanadium |
| url | http://www.cjm.asm.md/sites/default/files/article_files/003%20Cazac_0.pdf |
| work_keys_str_mv | AT ludmilakiriyak adsorptionwaveofvanadiumcomplexwith23dihydroxybenzaldehyde AT nataliacecoi adsorptionwaveofvanadiumcomplexwith23dihydroxybenzaldehyde AT tatianacazac adsorptionwaveofvanadiumcomplexwith23dihydroxybenzaldehyde AT mihailrevenco adsorptionwaveofvanadiumcomplexwith23dihydroxybenzaldehyde |