Adsorption and reduction of palladium-dimethylglyoxime complex
The voltammetric reduction of PdII(DMGH)2 preadsorbed on mercury in 0.2 M acetic/acetate buffer (pH 4.85) was studied. Two adsorbed surface stages could be distinguished: while a submonolayer is present molecules adsorb parallel to the electrode, but at high surface concentration perpendicular inter...
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todo:paper_15726657_v629_n1-2_p147_Ramirez2023-10-03T16:27:30Z Adsorption and reduction of palladium-dimethylglyoxime complex Ramírez, S.A. Gordillo, G.J. Adsorption Capacitance Dimethylglyoxime Mercury electrode Palladium Stripping voltammetry Adsorption Capacitance Electrochemical electrodes Lead Mercury (metal) Molecules Palladium Palladium compounds Reduction Stripping (dyes) Voltammetry Adsorbed molecules Adsorbed species Adsorption and reductions Attractive forces Bi layers Complex molecules Dimethylglyoxime Dimethylglyoxime complexes Electrochemical behaviours Mercury electrode Multilayer formations Rate expressions Stripping voltammetry Sub-monolayer coverages Submonolayer Surface concentrations Voltammetric reductions Surface reactions The voltammetric reduction of PdII(DMGH)2 preadsorbed on mercury in 0.2 M acetic/acetate buffer (pH 4.85) was studied. Two adsorbed surface stages could be distinguished: while a submonolayer is present molecules adsorb parallel to the electrode, but at high surface concentration perpendicular interactions between adsorbed molecules lead to bilayer or even multilayer formation. The surface charge value obtained for the reduction of a virtual monolayer is QM = 38 μC cm-2. The electrochemical behaviour of adsorbed species under submonolayer coverage is explained in terms of an ErCi surface reaction scheme and a rate expression that takes into account attractive forces between the adsorbed reactant complex molecules. © 2009 Elsevier B.V. All rights reserved. Fil:Ramírez, S.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Gordillo, G.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_15726657_v629_n1-2_p147_Ramirez |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Adsorption Capacitance Dimethylglyoxime Mercury electrode Palladium Stripping voltammetry Adsorption Capacitance Electrochemical electrodes Lead Mercury (metal) Molecules Palladium Palladium compounds Reduction Stripping (dyes) Voltammetry Adsorbed molecules Adsorbed species Adsorption and reductions Attractive forces Bi layers Complex molecules Dimethylglyoxime Dimethylglyoxime complexes Electrochemical behaviours Mercury electrode Multilayer formations Rate expressions Stripping voltammetry Sub-monolayer coverages Submonolayer Surface concentrations Voltammetric reductions Surface reactions |
| spellingShingle |
Adsorption Capacitance Dimethylglyoxime Mercury electrode Palladium Stripping voltammetry Adsorption Capacitance Electrochemical electrodes Lead Mercury (metal) Molecules Palladium Palladium compounds Reduction Stripping (dyes) Voltammetry Adsorbed molecules Adsorbed species Adsorption and reductions Attractive forces Bi layers Complex molecules Dimethylglyoxime Dimethylglyoxime complexes Electrochemical behaviours Mercury electrode Multilayer formations Rate expressions Stripping voltammetry Sub-monolayer coverages Submonolayer Surface concentrations Voltammetric reductions Surface reactions Ramírez, S.A. Gordillo, G.J. Adsorption and reduction of palladium-dimethylglyoxime complex |
| topic_facet |
Adsorption Capacitance Dimethylglyoxime Mercury electrode Palladium Stripping voltammetry Adsorption Capacitance Electrochemical electrodes Lead Mercury (metal) Molecules Palladium Palladium compounds Reduction Stripping (dyes) Voltammetry Adsorbed molecules Adsorbed species Adsorption and reductions Attractive forces Bi layers Complex molecules Dimethylglyoxime Dimethylglyoxime complexes Electrochemical behaviours Mercury electrode Multilayer formations Rate expressions Stripping voltammetry Sub-monolayer coverages Submonolayer Surface concentrations Voltammetric reductions Surface reactions |
| description |
The voltammetric reduction of PdII(DMGH)2 preadsorbed on mercury in 0.2 M acetic/acetate buffer (pH 4.85) was studied. Two adsorbed surface stages could be distinguished: while a submonolayer is present molecules adsorb parallel to the electrode, but at high surface concentration perpendicular interactions between adsorbed molecules lead to bilayer or even multilayer formation. The surface charge value obtained for the reduction of a virtual monolayer is QM = 38 μC cm-2. The electrochemical behaviour of adsorbed species under submonolayer coverage is explained in terms of an ErCi surface reaction scheme and a rate expression that takes into account attractive forces between the adsorbed reactant complex molecules. © 2009 Elsevier B.V. All rights reserved. |
| format |
JOUR |
| author |
Ramírez, S.A. Gordillo, G.J. |
| author_facet |
Ramírez, S.A. Gordillo, G.J. |
| author_sort |
Ramírez, S.A. |
| title |
Adsorption and reduction of palladium-dimethylglyoxime complex |
| title_short |
Adsorption and reduction of palladium-dimethylglyoxime complex |
| title_full |
Adsorption and reduction of palladium-dimethylglyoxime complex |
| title_fullStr |
Adsorption and reduction of palladium-dimethylglyoxime complex |
| title_full_unstemmed |
Adsorption and reduction of palladium-dimethylglyoxime complex |
| title_sort |
adsorption and reduction of palladium-dimethylglyoxime complex |
| url |
http://hdl.handle.net/20.500.12110/paper_15726657_v629_n1-2_p147_Ramirez |
| work_keys_str_mv |
AT ramirezsa adsorptionandreductionofpalladiumdimethylglyoximecomplex AT gordillogj adsorptionandreductionofpalladiumdimethylglyoximecomplex |
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1807318626309505024 |